Senior Power Electronics Engineer

About the Company

Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor designed to provide critical power for hospitals, data centers, and remote sites.

Responsibilities

• Design power electronic systems to convert AC and DC power sources into stable grid compatible voltages and frequencies
• Take ownership and configure active rectifiers, inverters, and dc/dc converters
• Apply EMI/EMC strategies to system design, including line filters, capacitors, grounding, and isolation
• Utilize expertise in design and validation of gate drivers, power stages, magnetics, and controls
• Conduct modeling and detailed simulation of inverters
• Perform circuit formal analysis, such as de-rating and worst-case circuit analysis
• Optimize loss, efficiency, and conduct thermal analysis of the inverter

Requirements

• Bachelor's degree in Electrical Engineering with a specialization in power electronics
• 6+ years of design experience in high voltage and high-power electronics
• Expertise in high voltage power semiconductor selection (Si/SiC/GaN, IGBT, Diodes, MOSFETs)
• Strong experience in high voltage (HV) power electronics design (+800V)
• Proficiency with power electronics tools such as PLECS, PSCAD, dSPICE, PSIM, or Simplorer
• Expertise in EMI/EMC filter design
• Solid understanding of capacitor and super-capacitor design and selection
• Ability to work 100% onsite in El Segundo, CA

Preferred Qualifications

• 8+ years of design experience in high voltage and high-power electronics
• Experience in magnetics design including transformers and inductors
• Familiarity with functional safety standards (IEC 61508) and fault-tolerant design
• Experience in aerospace, defense, or nuclear applications
• Demonstrated experience in embedded programming with C/C++