Senior​/Principal Power Electronics Engineer

Medium Voltage Power Conversion

Location:

Sullivan, MO / Orange County, CA

Path:
Full-Time

Infinity Miles is seeking a Senior Power Electronics Engineer to lead the design and development of advanced medium-voltage power conversion systems for commercial deployment. We are developing next-generation medium-voltage Solid-State Transformer (SST) technology for AI data centers, renewable energy systems, battery energy storage, EV charging infrastructure, and grid modernization.

The Senior/Principal Power Electronics Engineer will be responsible for the architecture, design, analysis, testing, and validation of high-power converter systems. This role will drive the development of next-generation power conversion hardware from concept through commercialization.

• M.S. or Ph.D. in Electrical Engineering, Power Electronics, or related field
• 5+ years of industry experience in power electronics design and development
• Strong understanding of high-power converter topologies and control principles
• Experience with SiC-based power conversion systems
• Experience designing converters in the tens of kilowatts to multi-megawatt range
• Familiarity with medium-voltage systems and insulation requirements
• Knowledge of thermal management, EMI/EMC, electrical safety, and reliability considerations
• Hands-on experience with laboratory testing, debugging, and prototype validation
• Familiarity with UL, IEC, IEEE, and grid-interconnection standards

• Design and develop high-power isolated and non-isolated converter systems
• Develop advanced converter topologies including Cascaded H-Bridge, Multi-Level Converters, Dual Active Bridge (DAB), Resonant Converters, and related architectures
• Design power stages utilizing SiC devices and advanced gate drive technologies
• Perform system-level trade studies balancing efficiency, power density, thermal performance, reliability, manufacturability, and cost
• Develop converter protection strategies including fault detection, isolation, and system safety functions
• Perform simulation and analysis using PLECS, LTspice, MATLAB/Simulink, PSIM, or equivalent tools
• Lead laboratory testing, troubleshooting, and performance validation of prototype systems
• Collaborate with controls, magnetics, mechanical, manufacturing, and test engineering teams
• Mentor junior engineers and provide technical leadership within the organization

Help commercialize one of the industry's most advanced Solid-State Transformer platforms with significant technical leadership and career growth opportunities.