Electrical Engineer - Motor Controller (PCB) (Robotics)

Location: Shanghai, China; on-site

Company

Developing AI-first humanoid robots that combine perception, reasoning, dexterous manipulation, and continuous learning.

What you will do

• Design joint motor controller PCBs, including inverter stages, MOSFETs, gate drivers, current and voltage sensing, and protection circuits.
• Design encoder, temperature, and auxiliary sensor interfaces.
• Integrate EtherCAT or CAN communication physical layers and the MCU subsystem with embedded engineers.
• Own high-current, high-density PCB layout for thermally constrained actuator modules.
• Bring up and debug boards, validating power-on behavior, signal integrity, current loops, and thermal performance under load.
• Iterate board revisions with local PCB/PCBA suppliers and support EMI/EMC robustness and harness and connector definition.

Requirements

• Bachelor’s or master’s degree in Electrical Engineering or a related field.
• 8+ years of experience designing motor drive or power electronics boards, such as BLDC inverters, servo drives, or ESCs.
• Strong schematic and layout skills for mixed-signal, high-current designs using Altium or an equivalent tool.
• Hands-on board bring-up and debugging experience with oscilloscopes, current probes, and thermal measurement equipment.
• Solid understanding of FOC drive requirements, including current-sensing accuracy, PWM dead time, and gate-driver design.
• Experience collaborating closely with firmware engineers during board bring-up.

Nice to have

• Experience with integrated actuator drives or smart joints in robotics or drones.
• EtherCAT or CAN-FD hardware integration experience.
• Experience with GaN or high-frequency switching designs.
• Familiarity with functional safety concepts, including STO and protection mechanisms.
• Comfort communicating technical topics in English with international teams.

Culture & Benefits

• Work in a small, senior, hands-on robotics engineering team.
• Collaborate with engineering teams at headquarters and local PCB/PCBA suppliers.
• Iterate rapidly across board revisions, with speed of iteration as a core value.
• Contribute to the development of a next-generation full-size humanoid robot.