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OpenAI

Mechanical Design Engineer, Motor Design & Prototyping

San Francisco (Remote)$225k–$318kfulltimemidAdded yesterday

About this role

OpenAI is hiring a Mechanical Design Engineer to lead motor development for advanced robotic systems, owning stator and rotor designs from concept through prototype validation. You'll design critical motor components like laminations and bobbins, build and debug prototypes, and establish repeatable low-volume production processes while collaborating across electromagnetics, electrical, manufacturing, and test teams.

What you'll do

  • Own stator and rotor mechanical designs, CAD, drawings, tolerances, fits, and mechanical validation
  • Develop laminations, stack assemblies, bobbins, and winding interfaces controlling alignment and conductor placement
  • Design, fabricate, and debug fixtures for winding, assembly, alignment, and inspection
  • Build and troubleshoot prototypes, using defects and measurements to iterate designs and processes
  • Establish low-volume production with work instructions, revision control, traceability, and acceptance criteria
  • Collaborate with electromagnetic, electrical, manufacturing, and test teams to balance performance and buildability

What they're looking for

  • Motor and actuator design and assembly
  • 3D CAD and manufacturing drawings
  • Tolerance analysis and fixture design
  • Lamination stacks and winding interfaces
  • Metrology and precision measurement
  • Prototype manufacturing (machining, additive, bonding)
  • Process documentation and repeatability
  • Cross-functional technical communication
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OpenAI

OpenAI builds AI infrastructure and products, including large-scale data center campuses for AI computing and generative AI applications for enterprise customers. The company is hiring civil engineers, project engineers, electrical design engineers, data center R&D engineers, and AI deployment engineers to expand its infrastructure capabilities and help customers deploy AI solutions.

View all jobs at OpenAI

Likely interview questions

  • Walk us through a motor or electromechanical assembly you've designed end-to-end—what were the biggest buildability challenges and how did you solve them?
  • Describe your approach to designing a lamination stack or bobbin interface that controls tolerances and enables reliable winding.
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