H3X Technologies · 1 day ago
Senior/Staff Power Electronics Engineer
Louisville, Colorado
Full-time
Onsite
Senior Level
5+ years expH3X Technologies is a U.S.-based manufacturer of electric motors for sustainable aviation, marine, industrial, and defense applications. They are seeking a Senior or Staff Power Electronics Engineer to oversee inverter development, taking designs from prototype to production for next generation products.
AerospaceAir TransportationElectric VehicleManufacturing
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, filtering (CMCs, Y-caps, etc.), shielding approaches, and layout practices; partner with test teams through pre-compliance and compliance efforts
Build and execute hardware test and characterization plans (DVP&R): DPT, thermal, fault response, transient behavior (and more) across the operating envelope
Be the “go-to” for debugging: efficiently isolate root cause across electrical/mechanical/firmware interfaces and implement corrective actions (design changes, manufacturing improvements, etc)
Partner with Supply Chain / Manufacturing on DFM/DFT, PCB fab/assembly coordination, inverter BOM ownership, and sustaining support through prototype builds
Collaborate with motor control team to ensure clean interfaces (sensing, protection, comms, timing), and support integrated system bring-up in the lab
Qualification
Required
5+ years professional experience in power electronics hardware, with scope appropriate for Senior or Staff level ownership
M.S./Ph.D. in Electrical Engineering or equivalent experience
Deep hands-on experience with high-density PCB layout for power electronics (Altium strongly preferred): disciplined component placement, current return paths, loop minimization, and mixed-signal best practices
Demonstrated experience with wide-bandgap devices (SiC and/or GaN) and their practical design implications (gate drive, dv/dt, di/dt, protection, layout sensitivity), as well as high-voltage, high-current constraints: isolation strategy, creepage/clearance, partial discharge, etc
Excellent debugging and bring-up skills: can take a new inverter from 'first power' to stable operation; comfortable with oscilloscopes/differential probes, current probes, impedance considerations, and safe high-power lab practices
Proficiency in at least two of: Altium, LTSpice/PLECS, MATLAB/Simulink, and comfort learning new tools quickly
Strong fundamentals in power conversion, magnetics basics, sensing/isolation, protection, and control interface requirements for inverter systems
Ability to write clear technical documentation (requirements, schematics/layout notes, test plans, validation reports) and communicate crisply across disciplines
Preferred
Prior experience taking an inverter/power electronics product from concept to production, ideally in aerospace, automotive, or similarly rigorous environments
Experience with EMI/EMC standards and compliance workflows (e.g., DO-160G or similar), including design-for-compliance and lab troubleshooting
Experience with parasitics extraction / field solvers (e.g., Ansys Q3D) and correlating models to bench measurements
Familiarity with motor drive systems (PMSMs, FOC concepts) and practical integration considerations (sensing, timing, protection coordination)
Mechanical integration awareness: packaging constraints, thermal interfaces, and collaboration with mechanical teams (Solidworks proficiency is a plus)
Demonstrated track record of mentoring engineers and raising the bar on hardware quality, review rigor, and lab practices
Benefits
Employee equity incentive plan
Health insurance: medical, vision, dental, ST & LT disability, and life
Gym membership stipend (up to $60/month)
Epic or IKON Ski/Snowboard Pass (up to $869 provided)
Flexible hours (deliverable-based goals)
Flexible time off (just need manager approval)
Relocation package
Monthly company events
401k program
Company
H3X Technologies
H3X manufactures advanced electric propulsion systems for commercial aviation and other high performance applicaitons.
11-50 employees
H1B Sponsorship
H3X Technologies has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
Funding
Current Stage
Early StageTotal Funding
$24.65MKey Investors
Infinite CapitalNASALockheed Martin Ventures
2024-08-06Series A· $20M
2023-08-03Grant· $0.85M
2023-02-28Series Unknown
Leadership Team
Jason Sylvestre
Co-founder and CEO
Eric Maciolek
President & Co-Founder
Recent News
Google Patent
2025-05-04
2025-05-04
Google Patent
2025-02-15
Company data provided by crunchbase