At Mentee Robotics, we are redefining humanoid automation with an AI-first approach - combining perception, reasoning, and dexterous manipulation into fully autonomous systems that continuously learn and adapt.

We are now expanding with a new robotics Engineering center in China, working hand-in-hand with our engineering teams in headquarters. Its mission: to rapidly develop our next-generation full-size humanoid and bring it to life - a walking, working platform that becomes the foundation of our next generation of products. This is a small, senior, hands-on team where speed of iteration is the core value.

We are looking for a Motion Control Engineer to own the control algorithms of every joint in our humanoid - jointly with the embedded team, who implement your designs on the Motor Controller PCB. This is pure actuator control: FOC, loop design, estimation, and compensation. Whole-body behavior lives in learned policies; your job is to make every joint execute its commands perfectly.

At Mentee Robotics, we are redefining humanoid automation with an AI-first approach - combining perception, reasoning, and dexterous manipulation into fully autonomous systems that continuously learn and adapt.

We are now expanding with a new robotics Engineering center in China, working hand-in-hand with our engineering teams in headquarters. Its mission: to rapidly develop our next-generation full-size humanoid and bring it to life - a walking, working platform that becomes the foundation of our next generation of products. This is a small, senior, hands-on team where speed of iteration is the core value.

We are looking for a Motion Control Engineer to own the control algorithms of every joint in our humanoid - jointly with the embedded team, who implement your designs on the Motor Controller PCB. This is pure actuator control: FOC, loop design, estimation, and compensation. Whole-body behavior lives in learned policies; your job is to make every joint execute its commands perfectly.

Who you are?

A motor control specialist who can take a noisy, nonlinear physical joint and make it track like a servo catalog page

Equally fluent in control theory and in what the silicon can actually compute in a 60 kHz loop

Data-driven: you tune with measurements, plots, and system identification - not by feel alone

Responsibilities:

Define and validate the motor control methodology across the robot: FOC and commutation strategies for BLDC motors in quasi-direct-drive configurations with planetary reduction

Design current, velocity, and position/torque control loops; define bandwidths, filtering, anti-windup, and saturation handling

Develop torque estimation, friction and cogging compensation, and observers for joint state

Define joint-level safety limits and fault-handling behavior together with embedded

Guide and verify the embedded implementation of your algorithms on the Motor Controller PCB; co-own everything running on that board

Design and execute structured characterization tests on the joint dyno: torque, speed, resolution, responsiveness, thermal behavior

Deliver validated actuator models and control limitations to the Sim2Real and RL teams - your measured envelopes become their training constraints

Drive improvements in actuation repeatability and responsiveness through precise measurement and feedback

Requirements:

B.Sc. or M.Sc. in Electrical, Mechanical, or Control Engineering (or equivalent experience)

8+ years in motor control systems or motion system integration

Deep hands-on experience with FOC and current/velocity/position loop design for BLDC motors

Familiarity with planetary gear systems and QDD architectures, and their impact on control and sensing

Proven ability to define and lead performance test plans from lab setup to interpretation

Comfortable using lab tools (oscilloscopes, encoders, current sensors) to evaluate dynamic behavior under load and in closed loop

Impedance control and proprioceptive actuation experience

Advantages:

Experience in robotic or humanoid actuation (e.g., actuator teams at Unitree, Wuji) or servo drive companies (e.g., Kinco, Inovance)

Familiarity with harmonic gear systems and their control implications

Python for scripting, system identification, and data analysis

Understanding of how sensor noise, latency, and actuation limits affect learned whole-body policies

Comfortable communicating technical topics in English with international teams

Motion Control Engineer - Actuator Control Algorithms