I'm looking for a job. I exported this list from FewerJobs.com - a curated job board.

Please:
1. Rank these jobs by fit for me, given my resume / skills.
2. Highlight the top 5 with a one-sentence rationale each.
3. Flag any concerns, including benefit values without source-backed evidence.
4. Suggest one or two filter changes I could make on FewerJobs to find more good matches.

Filters I applied:
- q: Helion Energy
- quality_floor: default
- match_401k_strict: true
- parental_strict: true
- non_birth_strict: true
- pto_strict: true
- include_older: false
- apply_url_verified: false
- page: 1
- per_page: 100
- sort: relevance

Jobs (100 total):

---
TITLE: Electrical Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/48b798be-5137-4d66-9b1b-473c9c92c0a7
EXCERPT: Electrical Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will play a critical role in supporting the core electrical energy management systems that power our fusion generators. Our work spans pulsed power delivery to magnetics, power electronics and fusion energy recovery, low voltage controls and networking, and precision sensing in electrically noisy environments. We look for strong electrical engineers who bring deep expertise in a few areas and give them real ownership immediately. You'll focus on the areas where your strengths
---
TITLE: Health Physicist
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/199dc273-3e26-4618-a6e6-75358fb6f493
EXCERPT: Health Physicist Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are looking for a Health Physicist to join our Radiation Safety team to work with radiation, radioactive materials, radiation survey equipment, and team members with varying levels of technical familiarity with these subjects, as we operate Polaris and build future fusion generators. This position is ideal for an experienced professional eager to make a significant impact on radiation safety practices at Helion. As a member of the radiation safety contingent of the
---
TITLE: Mechanical Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/967ff349-0e5e-4431-993d-136026d71239
EXCERPT: Mechanical Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will own the design and development of hardware for Helion's fusion devices. In this role, you will solve complex, multidisciplinary engineering problems critical to deploying fusion energy at scale. You will collaborate closely with engineers and technicians while contributing to the culture and growth of a fast-moving team. This is an onsite role located at our Everett, WA office. You Will: - Own and improve subsystem designs including electromagnetic, structural, fluid, thermal,
---
TITLE: Senior Electrical Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/0cbe8d0c-3a85-483f-b9e0-7460d6f3bd1b
EXCERPT: Senior Electrical Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will support the core energy management systems that power Helion's fusion generators. Your work will focus on high-power electrical systems including energy delivery to pulsed magnetics, energy recovery systems, internal redistribution networks, and grid-tie infrastructure. You will design, commission, and optimize systems that are foundational to delivering clean, low-cost electricity to the world. You will report to the Senior Manager of Electrical Engineering and this is an onsite role located at
---
TITLE: Senior Experimental Scientist
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/a325fe3e-e975-49a8-9a86-7169d279bacd
EXCERPT: Senior Experimental Scientist Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: Helion is hiring a Senior Experimental Scientist to support and advance the plasma diagnostics capability for Helion's fusion generators. In this role, you will be a key technical contributor for the design, deployment, calibration, and interpretation of plasma diagnostics across experimental campaigns and testbeds. This is an onsite role that reports directly to our Director of Plasma and Nuclear Science at our Everett, WA office. You Will: - Lead the design, build,
---
TITLE: Build the Future with Us! | Helion Talent Community
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: $10K-$10K
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/a9a2725e-24e6-4338-b0cf-828d7a6158f5
EXCERPT: Build the Future with Us! | Helion Talent Community Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. Join The Helion Talent Community Even if you don't see a role that aligns with what you're looking for, we want to hear from you! If the following resonates with you, we encourage you to apply: - Motivated to solve hard problems and deliver on big missions - Helion's values align with how you want to work - Have experience rapidly scaling manufacturing assembly lines and processes - Built technologies in
---
TITLE: Manager, Electrical Engineering
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/9a2f04d6-9fe1-4d87-8d7e-77877a418ac2
EXCERPT: Manager, Electrical Engineering Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will lead the development of high-voltage circuit designs and hardware systems for Helion's fusion devices. Your primary responsibility will be to grow and lead a high-performing electrical engineering team by providing mentorship, modeling technical excellence, and driving execution speed. You will solve complex engineering challenges that directly impact machine performance and help deliver clean, low-cost, reliable electricity to the world. You will report to the Senior Manager of Electrical Engineering and
---
TITLE: Principal Electrical Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/443266d6-75c3-4279-ad8a-7473cf05f6c8
EXCERPT: Principal Electrical Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are hiring a Principal Electrical Engineer to support the core energy management systems that power Helion's fusion generators. Your work will focus on high-power electrical systems including energy delivery to pulsed magnetics, energy recovery systems, internal redistribution networks, and grid-tie infrastructure. You will design, commission, and optimize systems that are foundational to delivering clean, low-cost electricity to the world. This is an onsite role that reports directly to Senior Manager of
---
TITLE: PR Lead
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/7e2b8df0-70ca-48c7-9238-ef5dfd1c5833
EXCERPT: PR Lead Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. Helion is seeking a PR Lead to drive our media relations strategy during a period of rapid growth and expansion. This is a highly visible, high-impact role responsible for shaping how Helion is understood by the public, press, and key stakeholders. You will serve as a primary interface between Helion and the media - translating complex fusion, energy, and manufacturing concepts into clear, compelling narratives that resonate across technical and mainstream audiences. As Helion moves toward deploying fusion
---
TITLE: Skillbridge
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/348e3002-542c-4083-93e4-af19f7086b1f
EXCERPT: Skillbridge Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You'll work side-by-side with technicians, engineers and scientists to turn ideas into prototypes, prototypes into experiments, and experiments into real systems operating on Polaris and the next generation of Helion fusion machines. This is a hands-on technical role for people who are interested in solving hard problems and working in a fast-paced environment where each day will bring new challenges and opportunities to build, test, and advance the next generation of fusion energy systems.
---
TITLE: Senior Mechanical Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/77f67235-ec72-4f14-8230-f99ed38a31de
EXCERPT: Senior Mechanical Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will own hardware designs for Helion's fusion generator prototypes. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office. You Will: - Own and understand subsystem designs such as electromagnetic, structural, fluid, thermal and
---
TITLE: Integration and Test Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/bfb14f68-c80a-4c07-8552-4c9bf5bed413
EXCERPT: Integration and Test Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will lead cross-subsystem integration and test activities for Helion's current and future fusion generator prototypes. This is a hands-on, role with broad technical scope and responsibility through build and commissioning phases. You will report to a Mechanical Engineering Lead and play a key role in shaping the execution and culture of a growing engineering team. This role is onsite at our headquarters in Everett, WA. You Will: - Own the
---
TITLE: Multiphysics Simulation Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/fde04dc8-a20c-4e0a-b5df-d9904befece3
EXCERPT: Multiphysics Simulation Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will own hardware designs for Helion's fusion generator prototypes. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report directly to our Engineering Manager at our Everett, WA office. You Will: - Enhancing Helion's analysis workflow for critical structures (electromagnets) - Running transient multiphysics finite-element models to generate margins for critical designs
---
TITLE: Community + Brand Manager
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/7f9ebb75-86f8-4717-a76b-39070e13dd40
EXCERPT: Community + Brand Manager Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: Helion is seeking a Community + Brand Manager to shape how people experience Helion externally through tours, events, and other public-facing brand experiences. This role will help bring Helion's story to life by creating engaging experiences that strengthen awareness of our mission and technology. You will work across communications, creative, and cross-functional teams to coordinate public-facing programs and engagement opportunities that connect external audiences with Helion's work and people. This is
---
TITLE: Principal Power Electronics Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/485ea7e2-af46-4b79-a6dc-df859e3eaa9b
EXCERPT: Principal Power Electronics Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are hiring a Principal Power Electronics Engineer to support the core energy management systems that power Helion's fusion generators. Your work will focus on high-power electrical systems including energy delivery to pulsed magnetics, energy recovery systems, internal redistribution networks, and grid-tie infrastructure. You will design, commission, and optimize systems that are foundational to delivering clean, low-cost electricity to the world. This is an onsite role that reports directly to Manager
---
TITLE: Senior Power Electronics Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/691cb280-44e4-449b-9734-c8b3633611d3
EXCERPT: Senior Power Electronics Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will support the design, development, and optimization of the core energy management systems for Helion's fusion generators. This includes high-voltage pulsed power delivery, energy recovery, redistribution networks, and AC grid-tie systems. In this role, you'll drive design excellence, mentor other engineers, and contribute directly to one of the most ambitious energy challenges of our time. This is an onsite role reporting to the Senior Manager of Electrical Engineering at our
---
TITLE: Senior Mechanical Engineer, Modules
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/99e6fa04-9412-453a-a350-4b6d6f38aec3
EXCERPT: Senior Mechanical Engineer, Modules Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will own hardware designs for Helion's fusion generator prototypes. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report directly to our Manager of Mechanical Engineering, and this is an onsite role located at our Everett, WA office. You Will: - Own and understand subsystem designs such as electromagnetic, structural, fluid,
---
TITLE: Principal Electrical Engineer - RF
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/22d1b06a-57c3-40cd-a14b-ab1c261dd42c
EXCERPT: Principal Electrical Engineer - RF Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As a Principal Electrical Engineer at Helion, you will be at the forefront of designing, implementing, and operating advanced RF circuits and diagnostic systems for Helion's fusion generators. You will integrate plasma science with high-power electrical engineering to deliver reliable, scalable, and high-fidelity plasma and energy system measurements that directly inform performance optimization, generator commissioning, and future device development. You will work across physics, controls, machine operations, and engineering disciplines
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TITLE: Senior Multiphysics Simulation Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/bec9911b-e47d-4df3-906e-b370ac22e99a
EXCERPT: Senior Multiphysics Simulation Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will own hardware designs for Helion's fusion generator prototypes. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report directly to our Senior Manager of Engineering at our Everett, WA office. You Will: - Enhancing Helion's analysis workflow for critical structures (electromagnets) - Running transient multiphysics finite-element models to generate margins
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TITLE: Senior Mechanical Engineer, Thermal
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/915d42ad-2618-4eba-997c-f36cc8991742
EXCERPT: Senior Mechanical Engineer, Thermal Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will own thermo-mechanical hardware designs for Helion's fusion generator. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office. You Will: - Own and understand designs related to thermal, fluids, and structural subsystems
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TITLE: Manager, Controls Development Engineering
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/51cd97ea-7a13-41c9-bd0a-0ce893f0b99f
EXCERPT: Manager, Controls Development Engineering Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will lead and build a team of Controls Development and Test Automation Engineers to develop and implement automation, controls and testing standards for Helion's capacitor bank production. In this role, you'll guide the transition from rapid prototyping to high-volume manufacturing, helping advance Helion's mission to deliver clean, sustainable electricity to the world. This is an onsite role that reports directly to the Factory Development Manager at our Everett, WA office.
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TITLE: Senior Mechanical Engineer, Fluids
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/708c511b-b1cc-4828-9b28-c84f21865db2
EXCERPT: Senior Mechanical Engineer, Fluids Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will own hardware designs for systems related to fluid systems on Helion's fusion generators. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office. You Will: - Own and understand designs related to
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TITLE: Senior Engineering Technician, Hardware Development
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/346d1f92-e66b-4bcd-aed9-81f17a477fbb
EXCERPT: Senior Engineering Technician, Hardware Development Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are hiring a Senior Engineering Technician to develop Helion's fusion generators and subscale plasma devices. You will help develop hardware, lead full-scale builds, and coach fellow technicians on the Production Team. You will report directly to our Build Manager at our Everett, WA campus. You Will: · Collaborate with engineers, technicians, and managers to design, assemble, test, and troubleshoot electromechanical systems · Design and fabricate fixtures and jigs to
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TITLE: Technical Program Manager - HERCULES
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/dbf521f9-711d-42b7-9060-57c1c755fdaa
EXCERPT: Technical Program Manager - HERCULES Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing You will be the Technical Project Manager for projects on the Nuclear Science team, including HERCULES - the Helion External Research Collaboration for Universities, Labs, and Enterprise Scientists. Through HERCULES, Helion will fund impactful research at universities, national labs, and research companies, totaling over $20M over three years in a phased approach. As administrator for this program, you will review proposals, work with Helion's business teams and the awardee to
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TITLE: Senior Engineering Technician, Electrical Engineering
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-12
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/dd981d5d-f9ad-432b-ae48-f408ba60a45f
EXCERPT: Senior Engineering Technician, Electrical Engineering Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As a Senior Engineering Technician at Helion, you will lead the build, integration, and troubleshooting of complex electromechanical systems that support our fusion generators and pulsed power architecture. You will drive execution across system builds while independently diagnosing issues and ensuring hardware meets performance, safety, and quality expectations. You will operate at the interface of design engineering and production, translating evolving designs into executable builds by developing processes, tooling, and
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TITLE: Senior Mechanical Engineer, Plasma Diagnostics
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/459de46a-cfc0-4efe-bc9a-c87d59038ba5
EXCERPT: Senior Mechanical Engineer, Plasma Diagnostics Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As a Diagnostics Engineer on the Science team at Helion, you will help advance the design and development of next-generation diagnostic instrumentation that supports our mission to achieve fusion energy. Sitting at the intersection of mechanical design, prototyping, and scientific exploration, you'll transform early-stage concepts into robust mechanical systems that enable groundbreaking plasma diagnostics and research. This is an onsite role that reports directly to the Director of Plasma and
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TITLE: Principal Capacitor Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/24e6b2d6-d935-43dd-845c-f46847f24a37
EXCERPT: Principal Capacitor Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing As a Principal Capacitor Design Engineer at Helion, you will lead the design, development, and scaling of custom high-voltage, pulsed-power capacitors that are core to Helion's fusion generators. You will own capacitor architecture from first principles through high-volume manufacturing, driving breakthroughs in energy density, reliability, and cost. You will provide deep technical leadership to engineering, manufacturing, and production teams as Helion transitions from prototype builds to the world's first fusion power plant.
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TITLE: Senior Computational Plasma Scientist - Kinetic / PIC Modeling
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/a68ac2cc-9d87-484b-a417-4893ce95b515
EXCERPT: Senior Computational Plasma Scientist - Kinetic / PIC Modeling Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: Helion is hiring a Senior Computational Plasma Scientist to run and interpret kinetic / Particle-in-Cell simulations that help advance our understanding of plasma behavior in Helion's fusion generators. In this role, you will use tools such as WarpX or similar PIC codes to design simulation campaigns, analyze large-scale field and particle outputs, and compare results against experimental data from Helion's operating machines. You will focus on
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TITLE: EHS Specialist (Swing Shift)
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/b7feaec3-e0af-4e67-a8ef-1707507f92b1
EXCERPT: EHS Specialist (Swing Shift) Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. Swing Shift Details: 5 days per week (M-F) | 3:00 PM - 11:00 PM What You Will Be Doing As an EHS Specialist at Helion, you will be part of a growing team dedicated to ensuring safety excellence across production, commissioning, and 24/7 operational activities. You'll provide daily on-site safety support, coach teams in the field, and drive continuous improvement in Helion's safety culture. This is an onsite role reporting directly to the EHS Manager at
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TITLE: Process Design Lead, Fuel Cycle
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/d9e0e2c2-5fda-44e2-b8f6-693590dd7702
EXCERPT: Process Design Lead, Fuel Cycle Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As Helion's Process Design Lead, you will guide a multidisciplinary team of engineers responsible for architecting, designing, and delivering the fuel cycle systems that will enable Orion, Helion's next-generation fusion power plant. You will set the technical direction for core technologies in the fuel cycle involving a variety of separation, vacuum, and cryogenic processes, ensuring they integrate seamlessly into Orion and future fusion platforms. In this role, you will also
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TITLE: Manager, Supplier Development Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/a550a051-379d-41ec-b3b8-8e13786ac3e5
EXCERPT: Manager, Supplier Development Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As the Manager of Supplier Development Engineering, you will lead the strategy, execution, and continuous improvement of Helion's supplier readiness, supplier quality, and supplier technical capability as we scale from prototype builds to high-volume manufacturing for fusion generator production. You will manage a team of Supplier Development Engineers and partner closely with design engineering, manufacturing, supply chain, and operations to ensure suppliers can meet Helion's technical, quality, cost, and delivery requirements.
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TITLE: Senior Supplier Development Engineer, Electrical
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/c50d7377-a506-4de5-804b-67f1df306393
EXCERPT: Senior Supplier Development Engineer, Electrical Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are hiring a Sr. Supplier Development Engineer to work with suppliers to make parts for fusion generators. You will solve technical problems, develop our supplier's quality systems, and accelerate Helion's transition from rapid prototyping to mass generator manufacturing, thus delivering on Helion's mission of providing clean electricity to the planet. This is an onsite role that reports directly to Senior Manager of Electrical Engineering at our Everett, WA office.
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TITLE: Power Electronics Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/4f0b0e62-cdd6-4f66-803b-c2d8ee3703c0
EXCERPT: Power Electronics Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will play a critical role in supporting the core electrical energy management systems that power our fusion generators. Our work spans pulsed power delivery to magnetics, power electronics and fusion energy recovery, low voltage controls and networking, and precision sensing in electrically noisy environments. We look for strong electrical engineers who bring deep expertise in a few areas and give them real ownership immediately. You'll focus on the areas where your
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TITLE: Senior Materials Science Manager
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/18a4093b-9c2f-4590-8df1-88af83d02022
EXCERPT: Senior Materials Science Manager Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will lead Helion's Materials Interactions and Diagnostics team with a strong focus on developing and deploying critical capabilities that enable the design, testing, and monitoring of materials for extreme environments. You will oversee the delivery of key R&D tools and guide a team of subject matter experts to meet Helion's materials innovation goals. This onsite position is based in our Everett, WA office and reports to the Director of Materials
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TITLE: High Voltage Test Technician
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/54718170-4ad0-4b47-ab96-4dddedb1beb8
EXCERPT: High Voltage Test Technician Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will perform high-voltage testing of production assemblies, subsystems, and components critical to Helion's fusion generators. You will implement and troubleshoot test setups, ensuring safety, quality, and throughput targets are met. You will work closely with Design Engineers, Test Engineers, and Production Technicians to validate system performance, identify issues, and continuously improve test execution. This is an onsite role that reports directly to the Production Manager at our Everett, WA office.
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TITLE: Build Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/a54af2f6-88e0-4e42-902b-478ddb658233
EXCERPT: Build Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: Helion is hiring a Build Engineer to drive the execution of first-of-a-kind fusion generator assemblies. You will get to own the manufacturing, assembly, and deployment of subsystems for integrated development testbeds and fusion generators. You will work closely with design engineering and production to ensure manufacturability is represented at every stage of the design process. You will report to a Mechanical Engineering Manager, and this is an onsite role located at our Everett,
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TITLE: Supplier Development Engineer, Electrical
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/b4efeb48-dbd7-42f3-b6a9-4f97c2074bf3
EXCERPT: Supplier Development Engineer, Electrical Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are hiring a Supplier Development Engineer to work with suppliers to make parts for fusion generators. You will solve technical problems, develop our supplier's quality systems, and accelerate Helion's transition from rapid prototyping to mass generator manufacturing, thus delivering on Helion's mission of providing clean electricity to the planet. This role requires an onsite presence and you will report to our Senior Manager of Electrical Engineering at our Everett, WA
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TITLE: Instructional System Designer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/2ca6129b-9a44-4ea1-8550-109eefb42b90
EXCERPT: Instructional System Designer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will lead the growth and execution of learning experiences within the Research and Development team to support Helion's continued operations and scaling of fusion machines. You'll develop training programs and contribute to cultivating a strong learning culture amongst operators and technicians. This is an onsite role that reports directly to the Research and Development Manager at our Everett, WA office. You Will: - Work alongside the R&D Engineering team to support
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TITLE: Senior Electrical Engineer, Hardware in the Loop
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/71eb8e1f-c424-4671-9b8d-d9ce81887c37
EXCERPT: Senior Electrical Engineer, Hardware in the Loop Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As an Senior Electrical Engineer focused on Hardware-in-the-Loop (HIL), you will design, build, and automate test platforms that allow us to validate our hardware, firmware, and software together in realistic, integrated environments. You'll work across disciplines to create regression tests that exercise real hardware through power supplies, function generators, source meters, and other lab equipment-catching integration issues before they reach the machine. You'll own the development of HIL
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TITLE: HERCULES Proposal Submission Form
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: $10K-$100K
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/27648fb4-e835-47db-b697-06b994b1ca91
EXCERPT: HERCULES Proposal Submission Form Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. HERCULES PROPOSAL SUBMISSION FORM Helion's external funding initiative supports research that develops the materials and technologies required to scale fusion energy from initial power plants to global deployment. With over $17M in funding committed through 2028, HERCULES will support partner-driven projects across three phases: - Phase 1: $10,000 - $100,000 over 6-8 months - Phase 2: $100,000 - $500,000 over 12-24 months - Phase 3: $1,000,000 - $2,000,000 to establish a University Center of Excellence Research
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TITLE: Supplier Development Engineer, Mechanical
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/4e875f71-8d2e-41a6-951a-690132c46b0c
EXCERPT: Supplier Development Engineer, Mechanical Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are hiring a Supplier Development Engineer to work with suppliers to make parts for fusion generators. You will solve technical problems, develop our supplier's quality systems, and accelerate Helion's transition from rapid prototyping to mass generator manufacturing, thus delivering on Helion's mission of providing clean electricity to the planet. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office.
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TITLE: Controls Development Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/c13dc736-878b-423b-849e-d20f9aac4d1b
EXCERPT: Controls Development Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will develop, implement, and standardize automation and controls used in manufacturing Helion's fusion generators. By building in-house expertise in our manufacturing processes, you will help accelerate the transition from rapid prototyping to mass production-advancing Helion's mission to provide clean electricity for the planet. This is an onsite role that reports directly to the Factory Development Manager at our Everett, WA office. You Will: - Design, scale, and launch manufacturing equipment for
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TITLE: Principal Experimental Scientist - RF
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/546d8e0e-e57a-4866-bec8-6c3a0a2c7ef4
EXCERPT: Principal Experimental Scientist - RF Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: Helion is hiring a Principal Experimental Scientist to lead the development of our RF pre-ionization capability for Helion's fusion generators. In this role, you will own the strategy, technical direction, and execution of RF plasma source development for our FRC system, translating plasma physics goals into robust experimental hardware and operational capability. You will develop, optimize, and validate high-performance RF systems to achieve target plasma density, stability, and coupling efficiency,
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TITLE: R&D Engineer - Fusion Generator Operations
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/bcf1cf97-2e73-4e8c-b55f-a26b685ea3f2
EXCERPT: R&D Engineer - Fusion Generator Operations Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will help operate and advance the most powerful, pulsed-fusion device ever constructed to generate electrical power. As a member of the Research and Development team, you will play a critical role in the safe, reliable, and repeatable operation of high-energy fusion systems. You will contribute to the execution of fusion experiments, system readiness, and continuous improvement of machine performance. You Will: - Operate and support the day-to-day execution
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TITLE: Mechanical Engineering Manager, Structures
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/056d0a90-61c6-403b-91d6-1c605f02014b
EXCERPT: Mechanical Engineering Manager, Structures Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will lead the mechanical hardware design of high-performance structural systems for Helion's fusion devices. Your role will focus on solving complex, high-impact problems that influence system performance, while also growing a high-performing engineering team. You will establish technical standards, drive execution, and shape design processes to increase the speed and quality of innovation. You will report to the Senior Manager of Engineering, and this is an onsite role located at
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TITLE: Senior Manager Mechanical Engineering, Structures
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/c4724186-c706-458e-a47f-5be613ed9442
EXCERPT: Senior Manager Mechanical Engineering, Structures Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will lead the mechanical hardware design of high-performance structural systems for Helion's fusion devices. Your role will focus on solving complex, high-impact problems that influence system performance, while also growing a high-performing engineering team. You will establish technical standards, drive execution, and shape design processes to increase the speed and quality of innovation. You will report to the Senior Manager of Engineering, and this is an onsite role located
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TITLE: Senior Process Engineer, Fuel Cycle
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/9b11de3a-b129-432a-81c2-56dbdf64e5a9
EXCERPT: Senior Process Engineer, Fuel Cycle Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You'll Be Doing You will be at the forefront of designing the world's first continuous fusion fuel cycle - an opportunity to redefine the future of clean energy for the modern world. You will lead process design and implementation for major systems in our fuel cycle, taking systems from concept to commissioning. You'll work with engineers, scientists, and technicians across the company, with a focus on scaling up and integrating these systems into our
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TITLE: Senior Manager Mechanical Engineering, Modules
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/e8619c78-6292-4690-90f1-07aa2267f592
EXCERPT: Senior Manager Mechanical Engineering, Modules Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will lead the mechanical hardware design efforts for Helion's fusion devices. Your role will focus on solving complex, high-impact problems that influence system performance, while also growing a high-performing engineering team. You will establish technical standards, drive execution, and shape design processes to increase the speed and quality of innovation. You will report to the Director of Mechanical Engineering and this is an onsite role located at our Everett,
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TITLE: Senior Materials Chemist
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/de3f4ad2-27f1-47b2-98b1-fc8eb492bd45
EXCERPT: Senior Materials Chemist Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will own the chemistry-driven understanding of how coolants and process fluids interact with materials and components. You will quantify degradation mechanisms, define compatibility limits, and develop practical mitigation strategies that improve system reliability and lifetime. This role sits at the intersection of chemistry, materials science, and hardware engineering, and directly impacts the performance and durability of Helion's fusion systems. You will report to the Materials Science Manager and this is an
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TITLE: Senior Manufacturing Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/42321984-0158-429d-a7b5-2c518d2a8b0f
EXCERPT: Senior Manufacturing Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will design, implement, and optimize the production process for in-house capacitors. This is a unique opportunity to collaborate with other teams (Supply Chain, Production, Engineering, Test Operations), directly influence the commissioning timeline for Helion's first power plant, and lay the groundwork for Helion's transition to generator mass-manufacturing. You will report to the Senior Manager of Capacitor Manufacturing and this is an onsite role located at our Everett, WA office. You Will:
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TITLE: Construction Project Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/411c557c-d386-4cb2-9ecf-1ba94bf30501
EXCERPT: Construction Project Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As an Entry Level Construction Project Engineer at Helion, you will support the delivery of complex, fast-paced construction projects that enable the future of fusion energy. Working across diverse trades and project types, you will help turn ambitious designs into reality. You'll play a hands-on role in ensuring projects are executed safely, efficiently, and to the highest quality standards. This is an onsite role at our Everett, WA office, reporting to the
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TITLE: Manufacturing Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/bc884700-f3af-44f1-8725-f5a91c2d8752
EXCERPT: Manufacturing Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will design, implement, and optimize the production process for in-house capacitors. This is a unique opportunity to collaborate with other teams (Supply Chain, Production, Engineering, Test Operations), directly influence the commissioning timeline for Helion's first power plant, and lay the groundwork for Helion's transition to generator mass-manufacturing. This is an onsite role that reports to the Director of Capacitor Manufacturing at our Everett, WA office. You Will: - Design and implement rate-based
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TITLE: Senior Semiconductor Device Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/423a9d67-00c6-46ab-9fe1-a1b469a9a049
EXCERPT: Senior Semiconductor Device Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will drive the design and development of cutting-edge semiconductors for high-performance pulsed power systems used in Helion's fusion generators. You will work in a fast-paced environment to develop, test, and implement high-reliability, high-efficiency switching components, with a strong emphasis on rapid development cycles. You will report directly to our Senior Manager of Electrical Engineering, and this is an onsite role located at our Everett, WA office. You Will: - Spearhead
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TITLE: Senior Integration Technician
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/a111e5b3-e88f-4f8b-b16c-236bab64e4cb
EXCERPT: Senior Integration Technician Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are hiring a Senior Integration Technician to assemble Helion's fusion generators and subscale plasma devices. You will help develop hardware, lead full-scale builds, and coach fellow technicians on the Production Team. You will report directly to one of our Production Supervisors at our Everett, WA office. You Will: - Collaborate with a versatile team to assemble, test, and troubleshoot electromechanical components - Integrate electromechanical components and systems to the fusion generator's
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TITLE: Process Engineer, Fuel Cycle
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/11798e74-79e3-463d-ac82-94a1049581e1
EXCERPT: Process Engineer, Fuel Cycle Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You'll Be Doing: You will be at the forefront of designing the world's first continuous fusion fuel cycle - an opportunity to redefine the future of clean energy for the modern world. You will own process design and implementation for major systems in our fuel cycle, taking systems from concept to commissioning. You'll work collaboratively with engineers, scientists, and technicians across the company, with a focus on scaling up and integrating these systems into our
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TITLE: Director of Fusion Plant Engineering
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/4b01920b-70b8-4e7b-aed5-ad1951089fa2
EXCERPT: Director of Fusion Plant Engineering Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. About The Role In this role, you will own the design and execution of critical plant systems that make fusion power possible - from radiation shielding and gas handling to thermal management and heat recovery. This role is at the heart of translating fusion physics into practical power generation. You'll build and lead teams that integrate Helion's fusion generators with the systems that extract, move, and manage energy at scale. It's a rare opportunity to
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TITLE: Mechanical Engineering Manager, Modules
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/b7654b53-00e4-4141-9e94-1c7ad762196e
EXCERPT: Mechanical Engineering Manager, Modules Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will lead the mechanical hardware design efforts for Helion's fusion devices. Your role will focus on solving complex, high-impact problems that influence system performance, while also growing a high-performing engineering team. You will establish technical standards, drive execution, and shape design processes to increase the speed and quality of innovation. You will report to the Director of Mechanical Engineering and this is an onsite role located at our Everett, WA
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TITLE: Senior Test Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/3a958165-7937-4eb1-b0b3-9d8dab3c0d1d
EXCERPT: Senior Test Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As a Test Engineer at Helion, you will be responsible for designing, building, and sustaining the electrical test systems that validate PCBAs, power electronics, and high-voltage assemblies used across our fusion generators. You will operate at the intersection of design engineering and production, ensuring that test infrastructure is robust, repeatable, and safe for hand-on execution by technicians. Your work will directly enable faster hardware iteration, improved first-pass yield, and reliable delivery of
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TITLE: Director of Fusion Plant Operations
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/52fade3b-17d1-47e7-97b5-ff76524ffe95
EXCERPT: Director of Fusion Plant Operations Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: This role carries a dual mandate: accelerating the development of Helion's fusion technology and building the Deployment organization that will operate the world's first commercial fusion power plants. Today, that means leading innovation across our fusion test platforms, subscale integrated devices, vacuum testing, circuit development, and other research projects required to meet our goal of delivering fusion energy to the grid by 2028. In this critical leadership role, you will
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TITLE: Senior Process Control Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-12
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/bd47c631-9e99-4a1b-b587-73fbc688bf71
EXCERPT: Senior Process Control Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As a Senior Process Control Engineer, you will lead the development of the control strategy and automation architecture for Helion's fusion fuel cycle systems. You will work at the intersection of process engineering, plant design, and operations to define how a first-of-a-kind process is monitored, controlled, and operated safely and reliably. This role requires an engineer who can quickly understand an evolving fusion fuel cycle process, determine the appropriate control and
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TITLE: Engineering Manager - Fusion Machine Operation
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/483e8771-3980-486b-b49d-abf0c136090f
EXCERPT: Engineering Manager - Fusion Machine Operation Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will lead the development of engineers and scientists that will bring the most powerful, controlled pulsed-fusion device ever constructed online, to generate electrical power. As a leader within the Research and Development team, you will grow and lead a high-performance operating team in the research and development of fusion technology and experiments, control high-energy systems, and design diagnostics for advanced plasma devices. You will report to the Senior
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TITLE: Special Projects Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/2001baa2-4e12-42ea-9285-8ee242280654
EXCERPT: Special Projects Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As a Special Projects Engineer, you will drive the delivery of high-impact projects across Helion's facilities, infrastructure, and operations. These projects are often ambiguous at the outset, technically complex, and time sensitive. You will serve as the lead on these projects-translating engineering requirements into executable plans, liaising between design and execution teams, and ensuring technical accuracy, schedule alignment, and high-quality outcomes throughout the project lifecycle. This is an onsite role that reports
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TITLE: Software Engineer, Plant Control
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/7c48cf04-62db-4cb8-9b7e-c23f267f45c1
EXCERPT: Software Engineer, Plant Control Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. WHAT YOU WILL BE DOING As a Software Engineer on the Plant Control team, you will help design, build, and scale the software systems that operate Helion's fusion generators and the Orion fusion power plant. You will work across control systems, diagnostics, data infrastructure, operator interfaces, automation, and integration with electrical, mechanical, firmware, and science teams. This is a generalist software role for someone who is comfortable moving between architecture and implementation, prototypes and production systems,
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TITLE: Principal Nuclear Materials Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/a45f7359-1915-4646-b593-4d0397d5aa6f
EXCERPT: Principal Nuclear Materials Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will play a key role in developing designs and materials suited for high-radiation environments, providing analysis and guidance to engineers on the behavior and performance of a wide range of materials under radiation exposure. In this onsite role, based at our Everett, WA office, you will report to the Director of Materials Science and collaborate closely with cross-functional teams to advance Helion's mission. You Will: - Advise engineering design decisions
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TITLE: Knowledge Systems Engineer - Fusion Systems
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/0e786f93-c149-41eb-b8ba-7eb41df18b13
EXCERPT: Knowledge Systems Engineer - Fusion Systems Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We're looking for someone to build Helion's internal knowledge foundation from the ground up-capturing operational procedures, experimental insights, and machine behavior-and turning that into a structured, scalable system that can support AI-assisted workflows and future automation. This role spans documentation, data structuring, and applied AI. You'll work directly with engineers and operators to turn fragmented, implicit, and fast-changing knowledge into something durable, searchable, and actionable. This is a hands-on,
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TITLE: Senior Materials Engineer, Diagnostics
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/1170a020-6c60-4449-86b5-55ea0bbde734
EXCERPT: Senior Materials Engineer, Diagnostics Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are looking for a Senior Materials Engineer, Diagnostics to lead the development of materials health monitoring for Helion's fusion generators. You will design, qualify, and deploy in-situ and ex-situ diagnostics to detect and quantify materials degradation under combined stimuli, including thermomechanical stress, radiation, high electric fields, and coolant environments. You will work cross-functionally with Materials, Research, and Engineering teams to translate failure modes into measurable signals and integrate diagnostics into
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TITLE: Manager, Plant Control Engineering
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/4f1fcc7d-c8fe-47bd-8883-f9cf4e5dccc3
EXCERPT: Manager, Plant Control Engineering Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing You'll grow and lead a team that bridges physics, electrical design, software engineering, and operations - creating a unified platform that allows fusion machines to operate efficiently, adapt to grid conditions, and evolve toward commercial reliability. You will report to the Senior Manager of Electrical Engineering and this is an onsite role located at our Everett, WA office. You will: - Build and lead a multidisciplinary team of software, firmware, and
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TITLE: Procurement Specialist
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/90f4d795-6496-4ac3-bec8-704ad27cadf8
EXCERPT: Procurement Specialist Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: Due to organization growth, we are seeking multiple proactive and driven Procurement Specialists to join our growing team. You'll collaborate closely with cross-functional teams to procure off the shelf hardware, equipment, services and software, ensuring timely execution of requirements as needed by Helion Energy's technical and production teams. This position offers the opportunity to become involved in a wide range of procurement activities and categories in a quickly growing organization, along with helping
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TITLE: System Security Administrator
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/747a593f-ec17-4a7b-a715-9416cfb40e46
EXCERPT: System Security Administrator Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: In this role, you will work within a small team to maintain, update, and manage our system software and hardware. You'll communicate with teams and users of varying levels of technical knowledge to diagnose and resolve problems patiently and efficiently. This role is responsible for setting up and maintaining a system or specific components of a system including installing, configuring, and updating hardware and software; establishing and managing user accounts; overseeing or
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TITLE: Senior Manager, Electrical Engineering
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/4c29decd-568f-45d6-aa8b-4e6334b71f2f
EXCERPT: Senior Manager, Electrical Engineering Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As a Senior Manager of Electrical Engineering, you will lead the development of novel circuit designs and hardware systems for Helion's fusion devices. Your primary responsibility will be to grow and lead a high-performing electrical engineering team by providing mentorship, modeling technical excellence, and driving execution speed. You will solve complex engineering challenges that directly impact machine performance and help deliver clean, low-cost, reliable electricity to the world. This is an
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TITLE: Senior Electrical Systems Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/b5659fa4-aadc-47d0-9746-f58cf8bc51e2
EXCERPT: Senior Electrical Systems Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As a Senior Electrical Systems Engineer, you will define the electrical hardware that powers and controls our next-generation fusion machines. You will work at the architecture level to ensure electrical subsystems, including power distribution, controls interfaces, sensors, and communication networks, function together as a coherent and reliable platform. In this role, you will lead architectural decisions, own requirements and interfaces, and drive verification and hardware bring-up. You will work closely with
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TITLE: People Operations Coordinator (Contract)
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/1166ef84-864f-4c6d-8469-def0345a2508
EXCERPT: People Operations Coordinator (Contract) Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. This is a 6-month contract with the opportunity for extension. What You Will Be Doing: At Helion, you will play a role in supporting the employee experience while ensuring our People systems and processes scale with the company. You'll partner with our greater People Ops team to keep core programs running smoothly, maintain data integrity, and help build a strong foundation for growth. This is an onsite role at our Everett, WA office. You Will: -
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TITLE: Capacitor R&D Supervisor
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/e8e70c75-ebb7-4c93-8b9d-b0cf076a293d
EXCERPT: Capacitor R&D Supervisor Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing This is a newly created role driven by rapid growth and increasing R&D demand. It's a unique opportunity to join at a pivotal moment, helping shape how capacitor technologies scale from development into manufacturing while building the systems, teams, and processes that will define future success. You will lead the execution of capacitor R&D builds and pilot manufacturing, translating evolving engineering concepts into safe, repeatable processes. In this role, you will serve
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TITLE: Fuel Cycle Operations Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/eb9a8d09-05ab-4f6a-a896-848deeec6f65
EXCERPT: Fuel Cycle Operations Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are hiring a Fuel Cycle Operations Engineer to commission, operate, test, and evaluate process equipment for Helion's fusion fuel cycles. You will support Polaris operations and lead testing and evaluation of fuel cycle technologies and processes, including fuel balancing, isotope separation, water detritiation, and helium separation. Following alignment on the fuel cycle technology approach, you will also own commissioning of fuel cycle design units for Orion. You will report directly
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TITLE: Principal Plasma Data Scientist
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/47995610-109e-45b7-9855-919adde1e803
EXCERPT: Principal Plasma Data Scientist Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: Helion is hiring a Plasma Data Scientist specializing in physics‑grounded machine learning to accelerate experimental FRC plasma modeling. This role will focus on developing and validating advanced ML frameworks-such as differentiable‑physics models, PINNs, surrogate modeling, or hybrid physics+ML systems-while integrating these tools with simulation and diagnostics pipelines. You will support cross‑disciplinary fusion research and contribute to high‑impact modeling that informs experimental design and interpretation. This onsite position reports to the Experimental
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TITLE: Senior Multiphysics Modeling Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/ad92a1bb-cc5e-462e-b41e-4fda4ac48a21
EXCERPT: Senior Multiphysics Modeling Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are seeking a Senior Multiphysics Modeling Engineer to develop and validate coupled thermal-mechanical-fluid models for Helion's fusion hardware. You will bridge simulation and experimental data to inform material selection, component design, and operating limits in one of the most demanding engineered environments in the world. This role is highly cross-functional, partnering with materials scientists, test engineers, and mechanical designers to ensure modeling directly drives hardware decisions. You will report to
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TITLE: Materials Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/c575251c-1851-4296-a12a-3779ec56c6c3
EXCERPT: Materials Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will own well defined workstreams in the lab: designing and running experiments, developing and refining test setups and procedures, and turning data into clear recommendations. You'll partner closely with senior engineers and cross functional teams to translate results into design and process changes, while receiving guidance on priorities and broader strategy. You will report to the Materials Manager, and this is an onsite role located at our Everett, WA office. You Will:
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TITLE: Principal Process Engineer, Fuel Cycle
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/e903954d-8e1b-4dd8-86b1-30c0e42204ac
EXCERPT: Principal Process Engineer, Fuel Cycle Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You'll Be Doing: You will be at the forefront of designing the world's first continuous fusion fuel cycle - an opportunity to redefine the future of clean energy for the modern world. This role operates at the intersection of process design, system integration, and program strategy, owning the performance, scalability, and operability of the fuel cycle across its full lifecycle. You'll work collaboratively with Engineering, Science, R&D, Operations, and Leadership, serving as a technical
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TITLE: Industrial Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/649ec9e4-b44f-4335-b0a0-f42297d92b10
EXCERPT: Industrial Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: This position will support the design, build, and optimization of Helion's high volume Capacitor Bank manufacturing facility. The role will work cross functionally with Manufacturing, Design, Controls, Quality and Supply Chain to remove waste, optimize layout, and support a rapid production ramp. This role will report to our Factory Development Manager at our Everett, WA office. You Will: - Lead the development of factory layouts for new manufacturing lines, major expansions, and system
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TITLE: Senior Superconductor Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/5c546f3f-4db4-4f9b-80d4-d2b4e55314ba
EXCERPT: Senior Superconductor Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will own the full lifecycle of superconducting hardware-from simulation and design through build, test, and integration-while coordinating across internal teams and external partners to qualify technologies for deployment in Helion's fusion machines. You will report to the Senior Director of Science and this is an onsite role located at our Everett, WA office. You Will: - Analyze magnetic fields and their coupled effects (e.g., Lorentz forces, thermal loads, structural stress) using
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TITLE: Senior Manager of People Operations
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/b06b8b72-648a-473f-a0b5-1f30983668d9
EXCERPT: Senior Manager of People Operations Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will lead the team responsible for building and scaling people programs that power our mission. From onboarding, offboarding, and employee relations, you will build programs and processes that foster an engaging, high-performing, and people-centered culture. You will partner closely with leaders and employees to ensure our People programs are thoughtful, scalable, and aligned with Helion's mission and growth. This is an onsite role that reports directly to Senior Director
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TITLE: R&D Hardware Test & Development Manager
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/e5cd14f6-e6da-4437-808a-b8b4c284263d
EXCERPT: R&D Hardware Test & Development Manager Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As the R&D Hardware Test & Development Manager, you will manage a diverse team of R&D engineers with a broad array of technical backgrounds and expertise, whose mission is to collaboratively support the development, testing, and delivery of the technology needed to provide fusion energy to the world. Your team works closely with all other technical organizations including Engineering, Production, Radiation and Nuclear Safety, and Science. R&D Dev Ops
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TITLE: Senior Firmware Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/05b910bc-8c44-41e4-8ee8-3ccdec7b9a6f
EXCERPT: Senior Firmware Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As a Senior Firmware Engineer, you will develop the embedded systems that power the control, diagnostics, and protection layers of our fusion machines. You'll write and maintain firmware that runs on thousands of distributed embedded devices controlling and monitoring tens of thousands of sensors, actuators, and data channels. This role bridges hardware and software - you'll work closely with electrical and software engineers to design reliable, scalable, and high-performance control and data
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TITLE: Senior Network Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/cec38fd0-2853-4ccb-8ab3-3925239237e8
EXCERPT: Senior Network Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: The Senior Network Engineer is a key member of the IS&T infrastructure team, responsible for architecting and managing enterprise-level network systems. This role involves leading network design initiatives, troubleshooting advanced issues, and ensuring the security and reliability of all network operations. This is an onsite role that reports directly to our Infrastructure Security Manager at our Everett, WA office. You Will: - Architect and deploy LAN/WAN, VPN, and cloud-based network solutions to
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TITLE: Lead Production Technician
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/9a843fbd-4a00-45cb-8f2f-8ac263662122
EXCERPT: Lead Production Technician Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As a Lead Production Technician, you will oversee the assembly of Helion's subassemblies (or module assembly lines) on C shift - Sun-Tue / Sun-Wed | 6:00 PM - 6:00 AM. You will help deliver hardware and coach fellow technicians on the Production Team. You will report directly to one of our Production Supervisors at our Everett, WA office. This position reports directly to the Production Supervisor and serves as the primary point
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TITLE: Principal Experimental Scientist
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/1ab0850a-50e2-4853-8fd7-c05e9a36c20f
EXCERPT: Principal Experimental Scientist Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are looking for a Principal Experimental Plasma Scientist to lead the plasma diagnostic effort of Helion's fusion generators. This is an onsite role that reports directly to our Director of Plasma and Nuclear Science at our Everett, WA office. You Will: - Own the end-to-end design and deployment of a comprehensive suite of plasma diagnostics, collaborating closely with physicists, engineers, designers, and data analysts to ensure robust, scalable instrumentation that meets
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TITLE: Manager, Experimental Science
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/a1969b3f-8e12-4d74-9e0a-840472ffa46d
EXCERPT: Manager, Experimental Science Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are looking for a Manager of Experimental Science to manage experimental diagnostics projects and to lead a team of scientists and engineers in the design, implementation, and testing of devices and technologies aimed at enhancing fusion plasma performance. This is an onsite role that reports directly to the Director of Plasma and Nuclear Science at our Everett, WA office. You Will: - Lead a team of scientists and engineers working on
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TITLE: Senior Software Engineer, Full Stack
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/3e9903d0-45d1-4ab6-81c9-864f2318b772
EXCERPT: Senior Software Engineer, Full Stack Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What you will be doing You will design, develop, and operate secure, reliable, scalable, and delightfully usable full-stack applications to optimize processes between mechanical and electrical engineering, supply chain, inventory, manufacturing, and finance, integrating with our internal data platform and external systems. This is a high-impact, high-visibility role: together with a cross-functional team owning business critical applications, you will multiply the impact of many other teams across the company. You will: - Design and develop
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TITLE: Principal Power Electronics Packaging Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/7bd14ec3-4563-4b92-a28c-15bc249d0021
EXCERPT: Principal Power Electronics Packaging Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: The switching systems in a commercial fusion generator will need to handle extreme pulsed currents in mass-manufacturable package. We are looking for someone to design what the next generation of packaging looks like, working ahead of where technology currently is and defining what it needs to become. You Will - Lead development of next-generation thermal management and packaging architectures for high-current switching components - Work across packaging geometry, materials selection,
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TITLE: Senior Electrical Simulation Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/520b0d15-04e0-4da0-8d27-9b76e879548a
EXCERPT: Senior Electrical Simulation Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As a Senior Electrical Simulation Engineer focused on simulation, you will develop and validate detailed circuit and system models that guide design decisions and ensure the safe, stable operation of our fusion systems. You will create plant-level models to assess performance, evaluate subsystem interactions, and verify compliance with applicable standards and regulations. You will collaborate with cross-disciplinary teams to model and simulate the pulsed power devices, circuits, and physics that enable
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TITLE: Electrical Systems Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/1e4cac3b-5e40-4baa-81b9-d9030c6198e3
EXCERPT: Electrical Systems Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As an Electrical Systems Engineer, you will help define the electrical hardware that powers and controls our next-generation fusion machines. You will work at the architecture level to ensure electrical subsystems, including power distribution, controls interfaces, sensors, and communication networks, function together as a coherent and reliable platform. In this role, you will contribute to architectural decisions, define requirements and interfaces, and support verification and hardware bring-up. You will work closely with
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TITLE: Senior Software Engineer, Cybersecurity
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/237a3a65-81e5-4122-82da-bc03a2699c86
EXCERPT: Senior Software Engineer, Cybersecurity Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: As a Cybersecurity Software Engineer focused on product security, you will ensure that the firmware, software, and server infrastructure driving our fusion machines are resilient against attack. You'll work closely with firmware, software, and infrastructure engineers to embed security into every stage of the development lifecycle-reviewing designs, auditing code and dependencies, and integrating security checks into CI/CD pipelines. You'll lead initiatives in encryption, secrets management, and secure authentication to protect sensitive
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TITLE: LabVIEW Controls Engineer
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/266bb6e9-153a-4ec2-9929-5194392fc26d
EXCERPT: LabVIEW Controls Engineer Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are seeking a Controls & Data Acquisition Engineer to design, develop, and support control and DAQ systems for fusion technology R&D and manufacturing. These systems enable operation of development test bays, manufacturing automation, and end-of-line quality and acceptance testing. You will work across the full system lifecycle-from requirements definition through deployment and operational support-collaborating closely with hardware, software, and manufacturing engineers. You will report to the R&D Manager, onsite in our
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TITLE: R&D Manager - LabVIEW Controls Systems
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/424e1bb6-efd4-4306-b659-ff4fea3eb7f2
EXCERPT: R&D Manager - LabVIEW Controls Systems Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will manage the control systems team in the R&D department. This team is responsible for delivering and maintaining control and data acquisition systems. These systems are used to control HV electrical test bays, control plasma technology development machines, control Production Manufacturing end-of-line testing, and control FRC plasma machines of varying sizes. This team will be one of the primary contributors to the control system of our first power
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TITLE: Senior Financial Analyst, Supply Chain and Manufacturing
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/6a2e2e50-692e-4696-a986-f0ab14d5eda1
EXCERPT: Senior Financial Analyst, Supply Chain and Manufacturing Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Do: You will be a critical member of the Finance team, providing analytical and reporting support for the Financial Planning & Analysis team (FP&A). You'll work with the Finance and Accounting teams and other key business stakeholders across Demand & Supply Planning, Procurement, and Inventory on day-to-day financial reporting, forecasting, and delivering of accurate analysis to support decision-making for the Integrated Supply Chain (ISC) organization. This is an onsite role
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TITLE: Senior Technologist - Materials
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/e42c934d-0271-4071-b722-5e0edcad6495
EXCERPT: Senior Technologist - Materials Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will apply advanced technical expertise to support engineering research, development, and manufacturing through hands-on materials testing, analytical system operation, and precision fabrication. In this role, you will independently execute complex test workflows, configure and maintain equipment, and troubleshoot technical issues to ensure diagnostic readiness and high-quality results. You will collaborate closely with engineers to translate test requirements into reliable, real-world setups, while using critical thinking and sound judgment to solve
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TITLE: Principal Materials Design Scientist
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/00cb79f1-aa15-43f1-b531-197be4b209f2
EXCERPT: Principal Materials Design Scientist Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: You will play a key role in developing thermomechanical and thermohydraulic models to drive the development of next generation materials and engineered components. In this role, you will apply advanced simulation, physics-based modeling, and materials science principles to design, evaluate, and optimize new materials for demanding thermal and mechanical environments. You will report to the Director of Materials, and this is an onsite role located at our Everett, WA office. You
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TITLE: Director of Experimental Science
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/1e2ff97c-9a78-4f90-99f5-89cfcc9e9eba
EXCERPT: Director of Experimental Science Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: We are looking for a Director of Experimental Science to lead a team of scientists and engineers in the design, implementation, and testing of devices and technologies aimed at enhancing fusion plasma performance. You will report directly to our Director of Plasma and Nuclear Science. You Will: - Build, grow, and lead a team of scientists and engineers who will apply their knowledge and expertise in plasma physics to optimize Helion's
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TITLE: Internal Communications Specialist
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/8906b43b-f948-4eb5-b1f6-445532264068
EXCERPT: Internal Communications Specialist Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: This role will be pivotal in scaling Helion's internal communications programs, with ownership of key storytelling and communication mechanisms that keep our growing team aligned and engaged across every site and shift. You'll partner with Production and Manufacturing leaders to surface stories, support team-wide events, and write announcements and updates. Every day will look different, but your north star will be clarity and connection for our team of builders. This is an
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TITLE: Senior Computational Plasma Scientist - MHD
EMPLOYER: Helion Energy
LOCATION: Everett, WA | OnSite (onsite)
SALARY: Not disclosed
POSTED: 2026-06-10
K401_MATCH: yes (not source-backed)
APPLY_URL: https://jobs.ashbyhq.com/helion/09454fbe-75df-472b-adbe-016de6180fe8
EXCERPT: Senior Computational Plasma Scientist - MHD Everett, WA | OnSite About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: Helion is hiring a Computational Plasma Engineer. You will communicate with engineers and scientists on wide range of topics including plasma physics; magnetic field diffusion and eddy currents; circuit response and coupling; and structural mechanics. You will report to our Manager of Computational Science at our Everett, WA office. You Will: - Run our internal MHD code to simulate FRC dynamics for wide range of simulation conditions from the
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