Mechanical Engineer (Rotary Actuators) - Space Solar

Location: Los Angeles (Hawthorne), CA

Employment Type: Full-time

Department: Starlight Solar

Travel: Occasional

Own rotary actuator designs from concept through detailed design, analysis, build, test, and flight — including solar array drive assemblies (SADAs), deployment hinges, dampers, latches, and gimbals

Select and integrate motors, gearheads, bearings, slip rings, and position sensors; size drivetrains for required torque, speed, lifetime, and backlash

Perform mechanism analysis — torque margin, friction budgets, stiffness, backlash, jitter, and life — and verify performance against requirements through hand calculations and FEA

Specify lubrication, materials, and surface treatments suited to vacuum, thermal cycling, and radiation; manage tribology and wear over mission life

Design and execute mechanism qualification and acceptance testing — functional, life, vibration, shock, thermal-vacuum, and torque-margin testing

Partner closely with electrical, controls, and avionics teams on motor drive electronics, feedback sensing, and closed-loop control of actuators

Work with manufacturing to design for assembly, alignment, and rate production of precision rotating hardware

Push back on unnecessary complexity — simplify mechanisms, reduce part count, and cut overhead wherever it doesn't add value

Bachelor's or advanced degree in mechanical, aerospace, or a related engineering discipline

1+ years of mechanism, actuator, or precision mechanical design experience (internship and academic experience applicable)

Proficiency with 3D CAD and the ability to produce detailed engineering drawings with GD&T

Master's degree in an engineering discipline

Hands-on experience designing rotary mechanisms — actuators, gearboxes, gimbals, hinges, or drive assemblies — for flight or other high-reliability applications

Proficiency selecting and integrating brushless DC motors, harmonic drives, planetary gearheads, and precision bearings

Familiarity with space-rated tribology — dry-film and wet lubricants, bearing preload, and life testing under vacuum and thermal cycling

Experience with slip rings, twist capsules, or other rotary power/signal transfer devices

Working knowledge of motor drive electronics, encoders/resolvers, and closed-loop position or velocity control

Experience executing mechanism qualification campaigns — life test, thermal-vacuum, vibration, and shock — and correlating results to analysis

Familiarity with aerospace mechanism standards and practices (e.g., NASA-STD-5017, AIAA mechanisms guidance)

Exposure to solar array deployment systems, SADAs, antenna pointing mechanisms, or similar spacecraft mechanisms

Exposure to aerospace, space, or other high-reliability hardware environments

To conform to U.S. Government export regulations, you must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State.

Starpath is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.