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Senior Actuator Design Engineer

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Figure

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Location:
United States , San Jose

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Contract Type:
Not provided

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Salary:

150000.00 - 190000.00 USD / Year

Job Description:

Figure is an AI robotics company developing autonomous general-purpose humanoid robots. The goal of the company is to ship humanoid robots with human level intelligence. Its robots are engineered to perform a variety of tasks in the home and commercial markets. Figure is headquartered in San Jose, CA. We are seeking a passionate and skilled Actuator Design Engineer with a strong background in electric motor mechanical design and integrated geartrain development. You will help define and execute the design of compact, high-torque, and highly efficient actuators for a new generation of humanoid robots. The ideal candidate has hands-on experience in rotor/stator design, geartrain sizing (planetary, harmonic), and bearing arrangement, and is proficient with tools like CATIA and KISSsoft or Romax.

Job Responsibility:

  • Own the mechanical design of electric actuators, including lamination stacks, high-speed rotors, geartrains, and bearing systems
  • Design and size planetary gearboxes and other reduction stages to meet torque density, speed, and lifetime requirements
  • Architect full actuator assemblies including structural layout, thermal path considerations, and serviceability
  • Lead design of rotor and stator assemblies including magnet retention (adhesives, interference fits), balancing, and burst strength analysis
  • Perform detailed tolerance stack-ups, shaft fits, bearing life calculations, and structural analysis using FEA
  • Use KISSsoft or Romax to model gearbox performance, lifetime, and manufacturability
  • Develop detailed CAD in CATIA and release complete drawing packages for supplier release and internal manufacturing
  • Collaborate closely with electromagnetic, controls, and system teams to deliver integrated, validated actuator solutions
  • Support vendor discussions and DFM reviews to ensure robust and scalable production of actuator components

Requirements:

  • Bachelor’s degree in Mechanical Engineering
  • 3+ years of experience in mechanical design of actuators, electric motors, or gear-driven systems
  • Strong fundamentals in mechanical design, dynamics, and structural analysis
  • Proven experience designing planetary or other compact gearbox architectures
  • Deep understanding of bearing selection, preloading, and life estimation
  • Proficiency with CATIA (V5 or V6) for complex assemblies and surfacing
  • Hands-on experience with rotor balancing and high-speed design for rotating systems
  • Proficient with KISSsoft or Romax for gearbox modeling and optimization
  • Excellent communication skills and ability to thrive in a fast-paced, cross-functional environment

Nice to have:

  • Master’s degree in Mechanical Engineering with a focus on machine design or dynamics
  • Experience designing actuators for robotics, aerospace, or automotive applications
  • Knowledge of thermal management in compact electromechanical systems
  • Familiarity with lamination stack-up design, magnet bonding, and motor assembly methods
  • Experience taking actuator designs from concept through prototyping and into production

Additional Information:

Job Posted:
December 08, 2025

Employment Type:
Fulltime
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