Principal Power Systems Engineer

The role

You will lead the design, modeling, and validation of electrical power systems for nuclear microreactor platforms. This includes owning power system studies from architecture tradeoffs through detailed modeling and testing.

What you will do

• Own power system architectural design for microreactor-based power generation systems
• Develop single-line diagrams of the power system
• Develop FMEAs to identify system behavior during component or system failures
• Evaluate system behavior during disturbances such as load steps, faults, and loss-of-generation events
• Size energy storage systems for reactor cold start and variable load demands
• Own synchronization of multiple reactors in a microgrid and multiple reactors tied to grid
• Collaborate cross-functionally with the power conversion team
• Participate in software-in-the-loop, hardware-in-the-loop, and system-level testing
• Support system checkouts, commissioning, and testing of all power requirements
• Regulatory compliance of power systems

Required qualifications

• B.S. in Electrical Engineering with an emphasis in power systems or control systems
• 5+ years of experience designing power systems for generation, microgrids, or mission-critical power systems
• Experience with sizing and integrating high-voltage battery systems with power electronics
• Strong experience with power system modeling and simulation tools (e.g., PSCAD, ETAP, PSS®E, Simulink, or equivalent)
• Solid understanding of inverters, grid converters, DC/DC converters, rotating generation, and power system control modes
• Experience in analyzing system stability, protection behavior, and fault response in complex electrical systems
• Ability to clearly communicate technical concepts and results to cross-functional teams

Nice to have

• M.S. in Electrical Engineering or related discipline
• Experience in power electronics development for high-power, medium-voltage equipment
• Experience with islanded power systems supporting critical loads
• Familiarity with interconnection requirements, grid codes, and relevant IEEE or utility standards
• Experience in modeling dynamic loads and fast-changing electrical demand
• Exposure to nuclear, aerospace, defense, or other highly regulated industries
• Experience mentoring junior engineers or leading technical efforts on complex programs

Benefits

• Substantial incentive stock plan for all full-time employees
• Medical: 100% up to base silver level plan for employee + 50% dependents
• One Medical: Sponsored memberships for employees and their 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 offered as employee contributed benefits
• 8-weeks of paid parental leave for all parents
• Additional paid pregnancy leave for CA employees
• Nuclear Engineering Certificate Program: 100% covered educational program with Penn State University
• Daily catered lunch
• Free snacks and drinks
• Flexible PTO policy

Before you apply

• Any job offer made will be contingent upon the applicant's 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.