Senior​/Principal Magnetics Engineer

Transformers, Inductors & Medium-Voltage Insulation

Location Sullivan, MO / Orange County, CA

Path Full-Time

Infinity Miles is seeking a Senior Magnetics Engineer to lead the design and development of advanced magnetic components for our commercial SST platform. This role will play a critical part in advancing next-generation power conversion products from prototype through commercial deployment.

The Senior/Principal Magnetics Engineer will be responsible for the design, analysis, testing, and validation of high-power transformers, inductors, and medium-voltage insulation systems. This role will play a critical part in advancing Infinity Miles' next-generation power conversion products from prototype through commercial deployment.

• M.S. or Ph.D. in Electrical Engineering, Electromagnetics, Power Electronics, Physics, or related field
• 5+ years of experience designing transformers, inductors, or magnetic components
• Strong understanding of magnetic materials, core losses, winding techniques, and thermal management
• Experience with medium-voltage insulation systems and high-voltage design practices
• Familiarity with partial discharge testing, dielectric design, insulation coordination, and reliability validation
• Experience using electromagnetic simulation tools such as ANSYS Maxwell, JMAG, FEMM, or equivalent
• Hands‑on experience with laboratory testing and prototype validation

• Design and develop high-power transformers and inductors for medium-voltage power conversion systems
• Optimize magnetic designs for efficiency, thermal performance, power density, manufacturability, and cost
• Develop winding structures, insulation systems, and packaging solutions for medium-voltage applications
• Perform magnetic, thermal, and electrical analysis using simulation tools
• Lead testing and validation activities including inductance, leakage inductance, losses, thermal performance, and insulation verification
• Support partial discharge, hipot, impulse, and environmental qualification testing
• Work closely with power electronics, controls, mechanical, manufacturing, and test engineering teams
• Support supplier engagement and qualification activities for magnetic components and materials

Own critical technology areas that directly impact product performance and commercialization, with significant technical leadership and career growth opportunities.