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Mechanical Design Engineer, Motor Design & Prototyping

OpenAI· Research
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Hybrid (San Francisco)$225k - $318k + equityFull-timePosted 1mo ago

About the role

Mechanical Design Engineer leading motor mechanical design and prototype hardware for advanced robotic systems, focusing on laminations, stack assemblies, bobbins, winding interfaces, fixtures, and validation from concept to low-volume production.

Responsibilities

  • Own stator and rotor mechanical designs and released CAD and drawings, including geometry, interfaces, fits, tolerances, retention, assembly access, and mechanical validation.

Qualifications

  • Experience designing and building motors, actuators, or other precision electromechanical assemblies.
  • Experience with lamination stacks, bobbins, winding, insulation interfaces, or small-component assembly.
  • Proficiency in 3D CAD, manufacturing drawings, tolerance analysis, and fixture design, with hands-on metrology and inspection of critical mechanical interfaces.
  • Machining, additive manufacturing, bonding, or other prototype manufacturing processes.
  • Experience turning an initial build into a repeatable low-volume process.
  • Interest in using AI to reduce repetitive design and prototype work, with careful engineering review.

Skills

Required:Stator and rotor mechanical designLaminations, stack assembly methods, bobbins, winding interfacesFixtures design and fabricationPrototype development and testingLow-volume production enablementCross-disciplinary collaboration

Benefits

  • Medical, dental, and vision insurance for you and your family, with employer contributions to Health Savings Accounts
  • Pre-tax accounts for Health FSA, Dependent Care FSA, and commuter expenses (parking and transit)
  • 401(k) retirement plan with employer match
  • Paid parental leave (up to 24 weeks for birth parents and 20 weeks for non-birthing parents), plus paid medical and caregiver leave (up to 8 weeks)
  • Paid time off: flexible PTO for exempt employees and up to 15 days annually for non-exempt employees
  • 13+ paid company holidays, and multiple paid coordinated company office closures throughout the year for focus and recharge, plus paid sick or safe time
  • Mental health and wellness support
  • Employer-paid basic life and disability coverage
  • Annual learning and development stipend
  • Daily meals in offices, and meal delivery credits as eligible
  • Relocation support for eligible employees
  • Additional taxable fringe benefits, such as charitable donation matching and wellness stipends
Last updated Sep 17, 2026. Interested? Apply on the company site.

About OpenAI

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