Principal Electrical Engineer (Integration & Test)

Join Radiant, a leading company in the development of advanced nuclear technology. As a Principal Electrical Engineer, you will lead the electrical system architecture and test infrastructure for Kaleidos, Radiant's commercial microreactor unit targeted for deployment in 2028. You will own end-to-end electrical integration, define and drive electrical validation strategy, manage schedule and budget, and support electrical integration across multiple critical systems and subsystems. This is a full-time position based in El Segundo, California, with a comprehensive benefits package including equity, medical, dental, vision, and flexible PTO.

• Lead the electrical system architecture and test infrastructure for Kaleidos, Radiant's commercial microreactor unit.
• Own end-to-end electrical integration, from early architecture and requirements definition through hardware bring-up, testing, and commissioning.
• Define and drive electrical validation strategy; develop test procedures, methodologies, and best practices.
• The ideal candidate brings deep electrical engineering expertise, strong systems-level thinking, and a track record of leading complex hardware programs from concept to deployment
• You are equally comfortable making architecture decisions independently and collaborating across mechanical, software, and systems engineering teams
• Demonstrated ability to work under tight timelines and deliver a functional product that meets requirements
• Proficiency with software and scripting environments (e.g., LabVIEW, TestStand)
• Strong electrical and software debugging and root cause analysis skills
• Proficiency with data acquisition systems, test execution, and validation frameworks
• Experience working cross-functionally with software, mechanical, and systems engineering teams
• BS in Electrical Engineering or related discipline from an accredited institution
• 10+ years of progressive electrical engineering experience, including hands-on hardware design, integration, and test
• Proficiency in at least one scripting or programming language (Python, C++, C#, or similar)
• Experience with DAQ and test systems (e.g., NI PXI, dSpace, Speedgoat, or similar platforms)
• Demonstrated experience setting technical direction, mentoring engineers, and driving programs with significant scope and ambiguity
• Must be willing to work extended hours and weekends as necessary to accomplish our mission
• Must work 100% onsite at El Segundo HQ
• MS or PhD in Electrical Engineering, or a related discipline
• Familiarity with real-time simulation systems and/or FPGA-based hardware
• Experience with controls fundamentals and software testing processes
• Hands-on experience with trace capture, data acquisition, and analysis tools
• Background in high-reliability, safety-critical, or regulated industry environments (aerospace, defense, nuclear, medical, or automotive)