Motor Electromagnetic Design Engineer

Dexmate • Fremont, CA

3d

About The Position

Dexmate is building robot platforms and a universal Physical AI OS to make robots easier to build and deploy. Its plug-and-play platform combines hardware and software for developers, researchers, and enterprises, within an open ecosystem supporting physical AI development.

The Motor Electromagnetic Design Engineer will develop PMSM and BLDC motors for integrated robot actuators and own electromagnetic design from topology and sizing through prototype characterization. The role works with mechanical, thermal, and drive engineers to deliver performance within the actuator’s packaging, voltage, current, and duty-cycle limits.

Requirements

• Hands-on electromagnetic design experience with PMSM or BLDC motors, including a design that was built and experimentally characterized.
• Strong understanding of winding design, magnetic circuits, materials, loss mechanisms, and torque production.
• Proficiency in an electromagnetic design or FEA tool such as Motor-CAD, JMAG, Ansys Maxwell, Flux, or an equivalent workflow.
• Ability to connect simulation to test data and work directly with mechanical, thermal, inverter, and manufacturing engineers.

Nice To Haves

• Experience with frameless, outrunner, high torque-density, or low-cogging motors for robotics, servos, drones, or EV traction.
• Experience optimizing winding manufacture, magnet retention, lamination production, or motor assembly with suppliers.
• Python or MATLAB skills for design sweeps, data analysis, and model correlation.

Responsibilities

• Evaluate motor topologies and size active materials for required torque-speed performance, efficiency, and mass, including frameless or outrunner configurations where appropriate.
• Design slot and pole combinations, winding layouts, magnets, laminations, and air gaps; evaluate saturation, losses, cogging torque, and torque ripple.
• Build electromagnetic FEA models and analytical checks, and document assumptions, material properties, and sensitivity to manufacturing tolerances.
• Co-design the motor with thermal and mechanical engineers, accounting for heat paths, retention, clearances, assembly, and manufacturability.
• Work with drive and firmware engineers on motor parameters, bus voltage, current limits, back-EMF, and operating envelopes before design release.
• Support suppliers and prototype builds; characterize motors on the bench or dynamometer and correlate measured constants, torque, efficiency, and temperature to predictions.

What This Job Offers

• Job Type: Full-time
• Education Level: No Education Listed