Principal Electrical Engineer, Electronics

The role

You will define and lead the electrical architecture for the Kaleidos commercial microreactor. This includes end-to-end PCB development, mixed-signal design, and high-reliability board development from requirements through field deployment.

What you will do

• Own multilayer mixed-signal boards that control a fission reactor
• Define system-level electrical architecture for mixed-signal systems
• Design, analyze, and simulate low-noise analog front ends
• Own schematic capture, component selection, and layout
• Bring up, debug, and validate hardware hands-on
• Write and execute qualification plans
• Work with firmware, FPGA, and DSP engineers
• Lead design reviews and mentor the electrical team
• Own hardware risk identification and mitigation

Required qualifications

• Bachelor’s degree in Electrical Engineering or a related field
• 8+ years designing custom multilayer and mixed-signal PCBs
• Experience shipping hardware you designed across the lifecycle
• Experience setting electrical architecture direction and driving decisions
• System-level perspective across design analysis, fabrication, and testing
• DSP experience applied to data acquisition and real-time signal processing
• Circuit analysis and simulation experience (PSpice, LTspice)
• Strong schematic capture and PCB layout experience (Altium Designer, Cadence, or similar)
• Strong command of signal integrity, power integrity, and grounding
• Analog and mixed-signal design experience
• Familiarity with high-speed interfaces (SPI, I2C, UART, Ethernet)
• Hands-on board bring-up, troubleshooting, and lab instrumentation

Nice to have

• Master’s degree in Electrical Engineering or a related field
• Radiation effects and radiation-tolerant electronics design
• Power electronics or power distribution design
• FPGA or embedded systems exposure
• Nuclear instrumentation or detector interface electronics
• DFM, DFT, and production bring-up experience

Benefits

• Substantial incentive stock plan
• Medical: 100% up to base silver level plan for employee + 50% dependents
• One Medical: Sponsored memberships for employees and dependents
• Vision: 100% top tier plan coverage + 50% for dependents
• Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents
• Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA
• 8-weeks of paid parental leave
• Additional paid pregnancy leave for CA employees
• Nuclear Engineering Certificate Program with Penn State University
• Daily catered lunch
• Free snacks and drinks
• Flexible PTO policy

Before you apply

• Must be willing to work extended hours and weekends as necessary
• Must work 100% onsite at El Segundo HQ
• Job offer contingent upon capacity to serve in compliance with U.S. export controls

About the company

Radiant is an El Segundo, CA-based company building the world's only mass-produced, transportable nuclear microreactors. Founded in 2020, Radiant is under contract to deliver power to the U.S. Army, Navy and Air Force.