Staff Power Electronics Engineer

About the Role

At H3X https://www.h3x.tech/, we are building the most advanced electric motors in the world for sustainable aviation, marine, industrial, and defense applications. At 12 kW/kg continuous, the HPDM family of integrated motor drives is a step change in electric propulsion technology and removes one of the main barriers blocking widespread proliferation of electric and hybrid aircraft. Our motors range in size from 30 kW to 30 MW, include integrated drives, and are 3X lighter than competitors’ systems.

We are looking to hire a Senior or Staff Power Electronics Engineer who will oversee inverter development, taking the design from prototype to production for a next generation product line. The ideal candidate has experience in the entire product development cycle including requirements definition, design and analysis, and test and validation. You will be a key part of the core engineering team and will have a direct impact on the trajectory of the company.

Responsibilities

- Own the power electronics hardware for high power density integrated motor drives, from requirements → concept → prototype → production readiness.

- Translate product requirements into inverter flowdown requirements (performance, safety, reliability, manufacturability, testability).

- Lead schematic design and high-density PCB layout (Altium), including stack-up, creepage/clearance strategy, high-current power paths, and gate-drive layout.

- Design and optimize wide-bandgap power stages (SiC and/or GaN): switching behavior, gate drive, protection, sensing, isolation, and thermal/packaging constraints.

- Engineer for low parasitics (power loop inductance, gate loop inductance, current sense fidelity) using simulation and measurement; apply tools like Ansys Q3D (or equivalent) where useful.

- Develop and validate designs using circuit and system simulation (LTSpice / PLECS / MATLAB/Simulink or equivalent).

- Drive EMI/EMC design and debug: grounding strategy, filt...