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Astro Mechanica

Mechanical Systems Engineer, Gearbox

San Francisco$150k–$225kfulltimemidAdded today

About this role

Astro Mechanica seeks a Mechanical Systems Engineer to design, analyze, and validate high-speed gearbox and power transmission systems for advanced aerospace propulsion applications. You'll own the full lifecycle of transmission hardware development—from architecture through ground testing—collaborating across propulsion, aircraft, and test teams to deliver flight-ready systems.

What you'll do

  • Design and architect high-speed geartrains with rotordynamic, lubrication, and interface optimization
  • Perform gear calculations per AGMA/ISO standards including load capacity, contact stress, and fatigue analysis
  • Conduct dynamic analysis of rotating systems using tools like KissSoft, Simcenter, SMT MASTA, and Ansys
  • Design shafts, bearings, housings, and lubrication systems; establish subsystem testing for validation
  • Specify qualification testing, analyze test data, and diagnose hardware/software issues
  • Anchor and refine simulation models using historical and internally generated test data

What they're looking for

  • Gearbox and transmission design (AGMA/ISO standards)
  • Rotordynamics and vibration analysis
  • Fatigue and stress analysis
  • Dynamic simulation software (KissSoft, Simcenter, SMT MASTA, Ansys)
  • Test instrumentation and data reduction
  • Lubrication systems engineering
  • Bearing and shaft design
  • Technical problem-solving and root cause analysis

Benefits

  • Comprehensive medical, dental, and vision insurance with FSA
  • 401(k) program and stock options
  • Flexible time-off policy including PTO and paid holidays
  • Flexible work environment
  • Collaborative, flat-structure company culture
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Astro Mechanica

Astro Mechanica develops advanced supersonic aircraft as a vertically integrated aerospace startup. The company is hiring flight software engineers, mechanical integration engineers, avionics engineers, GNC engineers, and software engineers to build control systems, propulsion avionics, design optimization tools, and systems that span structures, propulsion, and flight sciences.

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Likely interview questions

  • Tell us about a time you diagnosed and resolved a transmission failure in the field or test environment—what was your approach?
  • How do you balance gear design optimization across conflicting requirements like weight, efficiency, noise, and reliability?