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Senior Mechanical Design Engineer - Reactor Module

Oklo - Santa Clara, CA or Remote

Posted Jan 13, 2026

Benefits

Parental leave
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Non-birth-parent leave
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Family-building benefits
  • Fertility benefits: Not verified
  • Adoption assistance: Not verified
  • Surrogacy assistance: Not verified
Mental health support
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Relocation assistance
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Childcare support
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Learning budget
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Verification
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Salary
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Market context

U.S. role benchmark (BLS OEWS)
$111,944 U.S. median for this role
Projected growth (BLS Employment Projections)
+13.7% - Much faster than average

Matched to SOC 15-1252 - Data and ML aggregate by role bucket.

Source: U.S. Bureau of Labor Statistics, OEWS, May 2024 and Employment Projections, 2024-2034.

Role

Role function
Data From the posting source
Seniority
Senior From the posting source
Work mode
Remote From the posting source
In-office days
0 days From the posting source

Schedule

Shift type
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Weekend work
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Company

Equity
Offered Verified - SEC 10-K source

Application

Cover letter
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Assessment
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Deadline
Not stated

Where they hire

State eligibility is not yet verified.

About this role

Senior Mechanical Design Engineer - Reactor Module Santa Clara, CA or Remote Thanks for your interest in Oklo! We are searching for an experienced Mechanical Design Engineer to join our team. We are looking to fill this position immediately. Level (Engineer III/Senior) will be determined by experience. Position Description As a Senior Mechanical Design Engineer at Oklo, you will play a central role in designing the critical hardware that enables our advanced fast reactors to operate safely and reliably. This includes technical ownership of large, multi-component weldments and assemblies that comprise the reactor module within our Aurora powerhouses-ranging from the reactor vessel to various internal support structures and primary coolant flow elements. You will be responsible for advancing these components from conceptual design through detailed design and fabrication readiness, ensuring that every element is engineered for performance, manufacturability, industrial Code compliance, and integration into Oklo's broader reactor system. Your work will require deep engagement with cross-functional teams including structural analysts, systems engineers, materials experts, and external design and fabrication partners. This is a high-responsibility role at the heart of our flagship product. Success in this position requires producing quality mechanical solutions in a fast-paced, startup environment where technical excellence and a collaborative mindset are equally valued. Specific responsibilities may include: - Develop and own the design of complex mechanical components and subsystems within the reactor module - Collaborate cross-functionally with other engineering teams to define design and functional requirements, ensuring compliance with safety regulations and industry codes standards (e.g., ASME

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