Senior Electrical Engineer, HIL (hardware-in-the-loop)

The role

You will lead the design, build, and maintenance of electrical test infrastructure and Hardware-in-the-Loop (HIL) systems for the Kaleidos microreactor. This role involves owning technical decisions for electrical integration, validation strategy, and test-environment development.

What you will do

• Build the HIL platform from the ground up
• Own the design, build, and maintenance of electrical test infrastructure
• Define electrical and software integration requirements
• Own the communication layer between hardware, control systems, and software
• Lead the electrical validation strategy
• Assemble, debug, and troubleshoot test hardware and harnesses hands-on
• Execute test procedures, collect data, and lead analysis
• Drive automation and tooling improvements
• Lead design reviews and carry technical decisions to cross-functional stakeholders

Required qualifications

• BS in Electrical Engineering or a related field
• 5+ years of hands-on experience in electrical engineering, including hardware design, integration, and test
• 3+ years developing hardware-in-the-loop (HIL) systems, including signal conditioning, DAQ/IO interfaces, and fixtures for validating embedded controls
• Demonstrated experience owning and building electrical test infrastructure
• Proficiency with DAQ and test platforms such as dSpace, NI PXI, Speedgoat, or similar
• Hands-on experience with data acquisition, test execution, and validation frameworks
• Strong electrical and software debugging and troubleshooting skills
• Background in high-reliability, safety-critical, or regulated industry environments (aerospace, defense, nuclear, medical, or automotive)
• Must work 100% onsite at El Segundo HQ

Nice to have

• Experience with real-time simulation systems and FPGA-based hardware
• Strong understanding of control fundamentals and software testing processes
• Experience with trace capture tools or data acquisition and analysis tools
• Comfortable owning multiple test environments and defining new test infrastructure as program needs evolve

Benefits

• Substantial incentive stock plan for all full-time employees
• Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans
• 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 are 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, for eligible employees
• 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. Their first reactor, Kaleidos, is a 1 megawatt solution for critical infrastructure and commercial use.