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Mechanical Design Engineer, Actuators

Weave Robotics· Engineering
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San Francisco, CA$130k - $200kFull-timePosted 2w ago

About the role

Mechanical design engineer focused on actuators for home robotics, responsible for transmissions, structure, and thermal design to optimize joint performance in Weave Robotics’ bimanual home robots.

Responsibilities

  • Transmission design: Planetary, harmonic and cycloidal stages. Selection, design and analysis for torque density, stiffness, backlash, efficiency and noise.
  • Motor integration: Work with the Mechanical and Hardware team on rotor/stator integration, magnetic and thermal interactions with the structure and encoder mounting that holds calibration in years under heavy duty cycling.
  • Actuator package design: Structural design, bearings and preload, sealing against dust and general ingress, and thermal and load paths.
  • Life testing: Define and run life testing: cycle tests, load spectra derived from real fleet data, teardown analysis, and design margins set by evidence.
  • Assembly & test design: Design for assembly sequence to end-of-line test for actuators that are subassembled, calibrated, and tested in-house.
  • Performance roadmap: Drive the actuator performance envelope alongside controls, firmware and mechanical teams.

Qualifications

  • 3+ years designing actuators or precision transmissions (or equivalent research experience) with shipped products (robot joints, servo drives, e-mobility drivetrains, precision motion systems, or similar).
  • Transmission depth: gear train design, material and part selection, manufacturing methods and DFM.
  • Strong mechanical fundamentals: bearings and preload, shaft and housing design, tolerance stacks, GD&T, fatigue, and thermal design.
  • CAD and analysis fluency: SolidWorks-class CAD, FEA, and hand calculations.
  • Test-driven habits: Designed life tests, instrumented them, and iterated designs from teardown results.

Skills

Required:Actuator designGear transmission designCAD (SolidWorks)
Nice to have:FEA
Last updated Oct 7, 2026. Interested? Apply on the company site.
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About Weave Robotics

Personal robots for the home--that ship in 2025

Making the world’s first personal robot that's built for the home. Our robot, Isaac, will autonomously tidy up endless messes, fold laundry, and care for your home while you’re away, and we’re shipping our first 30 in fall of 2025.

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