Actuator Design Engineer for Precision Robot Joints

Weave Robotics, Inc.; San Francisco, Northern (CA, KY); Hybrid; USD 120,000 - 180,000; Full time

Job summary

Weave Robotics, Inc. in San Francisco, CA, is seeking a hands-on Mechanical Role focused on actuators and precision transmissions.

You will own the mechanical heart of our bimanual robot transmissions, structures, and thermal design to ensure strong, precise, quiet, and durable joints. You will integrate rotor/stator hardware with the structure, define life tests, and guide design margins from real fleet data.

Qualifications

• 3+ years designing actuators or precision transmissions with real products shipped.
• Strong transmission depth: gear trains, materials and manufacturing, DFM.
• Solid mechanical fundamentals: bearings and preload, shaft/housing design, tolerances, GD&T, fatigue, thermal design.
• CAD and analysis fluency: SolidWorks, FEA with judgement, hand calculations when practical.
• Test-driven habits: designed life tests and iterated from teardown results.

Responsibilities

• Transmission Design: select, design, and analyze torque density, stiffness, backlash, efficiency, and noise.
• Motor Integration: coordinate with mechanical and hardware teams on rotor/stator integration and encoder mounting.
• Actuator Package Design: ensure sealing, preload, dust ingress protection, and thermal/load paths.
• Life Testing: define and run life tests, derive load spectra, perform teardown analyses.
• Assembly & Test Design: plan assembly sequences and end-of-line testing for subassemblies.
• Performance Roadmap: drive actuator performance with controls, firmware and mechanical teams.

Skills

Actuator design

Transmission design

CAD and FEA

Life testing

Tolerance analysis

GD&T

Thermal design

Mechanical fundamentals

Tools

SolidWorks

FEA software

Job description

Weave Robotics, Inc. in San Francisco, CA, is seeking a hands-on Mechanical Role focused on actuators and precision transmissions.

You will own the mechanical heart of our bimanual robot transmissions, structures, and thermal design to ensure strong, precise, quiet, and durable joints. You will integrate rotor/stator hardware with the structure, define life tests, and guide design margins from real fleet data.