Senior/Principal Magnetics Engineer

Infinity Miles Inc.; Missouri; On-site; USD 90,000 - 120,000; Full time

Job summary

Infinity Miles Inc. is seeking a Senior Magnetics Engineer located in Missouri to lead design and development of magnetic components for their SST platform. This position is critical for advancing energy conversion products from prototype to commercial.

The ideal candidate should possess a M.S. or Ph.D. in Electrical Engineering and have over 5 years of experience. Responsibilities include designing high-power transformers, optimizing performance, and supporting testing activities.

Qualifications

• 5+ years of experience designing transformers, inductors, or magnetic components.
• Strong understanding of core losses and winding techniques.
• Experience with medium-voltage insulation systems.

Responsibilities

• Design and develop high-power transformers for medium-voltage systems.
• Optimize designs for efficiency and manufacturability.
• Lead validation activities for inductance and thermal performance.

Skills

Designing transformers

Understanding of magnetic materials

Electromagnetic simulation tools

Laboratory testing experience

Education

M.S. or Ph.D. in Electrical Engineering or related field

Tools

ANSYS Maxwell

JMAG

FEMM

Job description

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.

Position Overview

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.

Preferred Qualifications

• 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

Responsibilities

• 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.