Senior Actuator Engineer (Hands Team)

Rhoda Ai
Mountain View
On-site

Who this role is best for

Candidates with mechanical engineering expertise and robotics experience will find this hands-on, interdisciplinary role in actuator design. Based in Mountain View, this senior position demands deep technical knowledge and collaboration across hardware and control systems.

Best fit for

  • Individuals with a proven track record in shipping compact planetary gearboxes for robotics applications
    — “Track record of designing and shipping gearboxes, especially planetary gearboxes
  • Engineers skilled in miniaturizing systems under strict size and weight constraints
    — “Experience miniaturizing geartrains for tightly packaged, weight- and volume-constrained applications
  • Professionals comfortable with cross-functional hardware-software integration in robotics development
    — “Partner with the structures engineer on packaging and thermal paths, and with the electrical engineer on drive and sensing integration

Things to consider

  • Requires end-to-end responsibility from concept design to production deployment
    — “Design compact motor-gearbox actuator units for the hand's fingers and wrist, from concept through production

How to stand out

  • Highlight specific projects where you optimized planetary gear efficiency and packaging
    — “Architect miniaturized geartrains — especially planetary — that hit torque, backlash, and packaging targets
  • Quantify motor selection experience with torque density and thermal performance metrics
    — “Size and select motors against torque, speed, power-draw, thermal, and efficiency requirements
  • Demonstrate bench testing expertise with actuator durability and efficiency characterization
    — “Build and run bench and dyno tests to characterize actuator performance, efficiency, and durability
Pace · Fast PacedCollaboration · MediumAutonomy · MediumDecision Impact · TeamLevel · Senior

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • design and ship gearboxes
  • miniaturize geartrains
  • command motor sizing and selection
Typical background
mechanical engineeringrobotics engineering

Skills & requirements

Required

Design Compact Motor-gearbox Actuator UnitsArchitect Miniaturized GeartrainsSize And Select MotorsBuild And Run Bench And Dyno TestsPartner With Structures And Electrical Engineers

Preferred

Gear Design ExperienceTendon- Or Linkage-driven Finger ActuationBackdrivability And Transparency Requirements For Teleoperation

Stack & domain

Design Compact Motor-gearbox Actuator UnitsArchitect Miniaturized GeartrainsSize And Select MotorsBuild And Run Bench And Dyno TestsPartner With The Structures Engineer On Packaging And Thermal PathsPartner With The Electrical Engineer On Drive And Sensing IntegrationStrong Command Of Motor Sizing And SelectionRoboticsActuator DesignGear Design

About the role

Original posting from Rhoda Ai via Ashby

At Rhoda AI, we’re building the next generation of generalist intelligent robots. We own the full robotics stack from high-performance hardware and robot systems to the infrastructure and state-of-the-art foundation world models that control our robots. Our robots are designed to be generalists capable of operating in complex, real-world environments and handling long-tail edge cases, made possible by our cutting edge research and end-to-end system design. We've raised over $450M and are investing aggressively in model research, infrastructure, hardware development, and manufacturing scale-up to make generalist robotics a reality.

You will design the actuation at the heart of the hand: compact, efficient motor-and-gearbox units that must deliver human-hand dexterity in a human-hand package. Your actuators define what the entire system can do.

WHAT YOU'LL DO

  • Design compact motor-gearbox actuator units for the hand's fingers and wrist, from concept through production
  • Architect miniaturized geartrains — especially planetary — that hit torque, backlash, and packaging targets at finger scale
  • Size and select motors against torque, speed, power-draw, thermal, and efficiency requirements
  • Build and run bench and dyno tests to characterize actuator performance, efficiency, and durability
  • Partner with the structures engineer on packaging and thermal paths, and with the electrical engineer on drive and sensing integration

WHAT YOU BRING

  • Track record of designing and shipping gearboxes, especially planetary gearboxes
  • Experience miniaturizing geartrains for tightly packaged, weight- and volume-constrained applications
  • Strong command of motor sizing and selection, including power draw, torque density, and efficiency analysis

NICE TO HAVE

  • Gear design experience — tooth profiles, materials, and manufacturing methods
  • Experience with tendon- or linkage-driven finger actuation
  • Familiarity with backdrivability and transparency requirements for teleoperation

Source: Rhoda Ai careers (Ashby)

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