Motor Electromagnetic Design Engineer, Robotics

Dexmate; Fremont (CA); On-site; USD 110,000 - 180,000; Full time

Job summary

Dexmate is seeking a Motor Electromagnetic Design Engineer in Fremont, CA to develop PMSM and BLDC motors for integrated robot actuators. You will own the electromagnetic design from topology and sizing through prototype characterization, collaborating with mechanical, thermal and drive teams to meet packaging and duty-cycle constraints.

Responsibilities include evaluating motor topologies, designing windings and magnets, building FEA models, and coordinating with thermal and firmware engineers

Qualifications

• Hands-on electromagnetic design experience with PMSM or BLDC motors that were built and measured.
• Strong understanding of winding design, magnetic circuits, materials, loss mechanisms and torque production.

Responsibilities

• Evaluate motor topologies and size active materials for torque-speed performance and efficiency.
• Design slot/pole combinations, windings, magnets, laminations and air gaps; evaluate saturation, losses and cogging torque.
• Build electromagnetic FEA models and analytical checks; document material properties and tolerances.
• Co-design the motor with thermal and mechanical engineers for heat paths and manufacturability.
• Collaborate with drive/firmware teams on motor parameters, voltage, current limits and operating envelopes.
• Support suppliers and prototype builds; characterize motors on bench or dynamometer and compare with predictions.

Skills

PMSM/BLDC design

EM theory

Test-data correlation

Tools

Motor-CAD

JMAG

Ansys Maxwell

Flux

Job description

ABOUT DEXMATE

Dexmate is building robot platforms and a universal Physical AI OS to make robots easier to build and deploy. We combine hardware and software into a plug-and-play platform for developers, researchers and enterprises, with an open ecosystem that supports the development of physical AI.

THE ROLE

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

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; 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.

MINIMUM QUALIFICATIONS

• 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.

PREFERRED QUALIFICATIONS

• 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 for design sweeps, data analysis and model correlation.