Propulsion Transmission Engineer

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

$124K-$155K From the posting source checked Jun 20, 2026

401(k) match

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Market context

U.S. role benchmark (BLS OEWS)

$116,543 U.S. median for this role

Projected growth (BLS Employment Projections)

+9.8% - Much faster than average

20% above the BLS role benchmark for software engineering aggregate.

Matched to SOC 15-1252 - Software Engineering aggregate by role bucket.

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

Role

Role function

Engineering From the posting source checked Jun 20, 2026

Seniority

Mid From the posting source checked Jun 20, 2026

Work mode

Hybrid From the posting source checked Jun 20, 2026

In-office days

2 days From the posting source checked Jun 20, 2026

Schedule

Shift type

Not verified

Weekend work

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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

Propulsion Transmission Engineer Los Angeles, CA At Heart Aerospace we develop the ES-30, a regional hybrid-electric airplane with a capacity of 30 passengers, an electric zero-emission range of 200 km and an extended hybrid range of 400 km. Heart is targeting type certification of the ES-30 by the end of the decade. Your mission As a Propulsion Engineer focused on Transmission, you will be essential in designing, developing, and integrating the mechanical power transmission system within our hybrid-electric propulsion framework. Transmission system includes but is not limited to shaft, drive shafts, couplings, gearbox, and disconnect systems. You will collaborate closely with teams from various disciplines, including electric propulsion, turbomachinery, software, and structural engineering, to create robust, lightweight, and high-efficiency transmission solutions. This role demands a high level of technical expertise in mechanical design and a strong understanding of propulsion systems. Key responsibilities include but are not limited to: - This role is a Responsible Engineer (RE) who focuses on the integration of hybrid transmission systems into our hybrid aircraft. - Design and develop gearbox and mechanical power transmission systems for electric and hybrid-electric propulsion. - Perform sizing, strength, thermal, and NVH (noise, vibration, harshness) analyses of transmission components. - Nonlinear static and Dynamic analysis of structures and rotor systems. - Work closely with suppliers and manufacturing partners to guide component development, material selection, and manufacturing processes. - Define requirements, specifications, and interface documents for transmission subsystems. - Lead and support testing and validation efforts including test rig development, instrumentation, and

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