Electromagnetics Engineering Intern

About H3X Technologies

H3X is building America's advanced electric motor company, powering next-generation platforms in aerospace, defense, and marine. Our integrated motor drives deliver 12+ kW/kg, roughly 3x the power density of competing solutions. We're now scaling to megawatt-class systems, with customers working on everything from supersonic aircraft to turbine power generation for AI datacenters.

Our team brings together engineers and operators from aerospace, defense, and motorsports, with deep expertise in electric machines, power electronics, material science, and advanced manufacturing. We're a small, fast-moving team doing hard engineering that matters, and we're looking for people who want to do the best work of their careers alongside us.

Our team at H3X is hiring an intern to work alongside our design engineering team on real hardware programs. This is a hands‑on role: you will contribute directly to electromagnetic design, analysis, and the tooling that supports our characterization and optimization workflows. You will see your work flow from simulation through to physical test data. We are looking for a full time Spring Intern, but also have availability for Summer 2027 and extended Co-Op positions.

• Build and run finite element models to predict motor performance, including torque, losses, efficiency mapping, and thermal behavior
• Perform electrical machine sizing and preliminary design trades to evaluate topology and geometry candidates against performance and packaging targets
• Develop and maintain Python-based analysis and post‑processing tooling for simulation exports and bench test data
• Support multi‑physics optimization studies spanning electromagnetic, thermal, and structural domains
• Correlate simulation results against dynamometer and instrumentation data, and help close the loop between model and measurement
• Document methods and results clearly so that the team can build on your work

• Currently pursuing a BS, MS, or PhD in Electrical Engineering, Mechanical Engineering, or a related field
• Coursework or project experience in electric machines and electromagnetics
• Experience with FEA for electromagnetic analysis (JMAG strongly preferred; Ansys Maxwell, MotorCAD, or similar is acceptable)
• Working knowledge of electrical machine sizing fundamentals, magnetic and electric loading, winding design, and the relationships between geometry and performance
• Proficiency in Python for data analysis and automation
• Exposure to multi‑physics or design optimization methods (parametric sweeps, Pareto trade studies, coupled EM‑thermal‑structural analysis, multi‑variable optimization algorithms)

• Familiarity with permanent magnet synchronous machines and traction‑class motor design
• Hands‑on lab or test experience (dynamometer testing, power measurement, instrumentation)
• Understanding of power electronics and three‑phase systems
• Familiarity with CAD tools (Solidworks preferred)
• Familiarity with drawing creation & tolerancing

• Salary/Hourly Compensation Range: $23 - $37/hr based on school level & experience
• Flexible hours (deliverable‑based goals)
• Relocation package
• Monthly company events
• Friday Team Lunches

Joining H3X means working on hard, meaningful problems with a skunk works‑style team that’s laser‑focused on building exceptional products. We’re deeply vertically integrated and have a very tight design‑build‑test loop, which lets us move from concept to hardware at unmatched speed. We’ve gone from idea to shipping product in less than two months.

We’re a small, highly skilled team where everyone carries real responsibility and shares an extreme ownership mentality. We stay focused on the critical…