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 failsafe microreactor that can be transported anywhere power is needed and run for up to five years without the need to refuel. Portable nuclear power with rapid deploy capability can replace similar-sized diesel generators, and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-built microreactors that leverage existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor next year at the Idaho National Laboratory, with initial customer deliveries beginning in 2028.
We are seeking a detail-oriented and innovative Embedded Electrical Test Engineer to join our multidisciplinary Embedded Systems team. In this role, you will develop and execute testing strategies for the components critical to the instrumentation and control of our SMRs. You’ll be hands-on with prototype systems, working closely with mechanical, software, and safety teams to ensure system integrity, performance, and compliance.
Key Responsibilities:
- Write, execute, and document test plans for embedded systems components
- Build and maintain test setups and automated infrastructure for qualification and acceptance testing of electrical components.
- Troubleshoot and resolve issues during system integration and testing phases.
- Collaborate cross-functionally with mechanical, nuclear, and software teams to define interface requirements and ensure test coverage.
- Perform root cause analysis and recommend design improvements based on test data.
- Ensure compliance with applicable regulatory standards (e.g., NEC, IEEE, IEC, NRC guidelines).
- Contribute to safety analyses and quality documentation to support certification efforts.
- Bachelor’s degree in Electrical Engineering, Computer Engineering, or a related field.
- 2+ years of experience in electrical test engineering, preferably in high-reliability or safety-critical environments (e.g., aerospace, automotive, energy).
- Strong knowledge of electrical circuit analysis, instrumentation, and test methodologies.
- Proficiency with lab equipment (oscilloscopes, power analyzers, DAQs) and test automation tools (Python, LabVIEW, etc.).
- Hands-on experience with PCB bring-up, debug, and failure analysis.
- Familiarity with nuclear or radiation-tolerant electronics is a plus.
- Excellent communication skills and ability to work in a fast-paced, team-oriented environment.
Additional Requirements
- Must be willing to work extended hours and weekends as necessary to accomplish our mission.
- Must work 100% onsite at El Segundo HQ.
Total Compensation and Benefits
Radiant's new hire compensation package includes base salary, substantial equity grants, and comprehensive benefits. Total compensation and level are determined through a holistic evaluation of your interview performance, experience, education, and qualifications.
Benefits and Perks for Eligible Employees:
- Stock: 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.
- Daily catered lunch. Free snacks and drinks.
- Flexible PTO policy. Remote workday allocation.
- Company and team-bonding events, happy hours and in-person camaraderie.
- Beautiful El Segundo headquarters close to the Pacific Ocean.
We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.
Unfortunately, we are unable to provide visa sponsorship at this time.
This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.
Similar Jobs
What We Do
Radiant is a clean energy startup building a nuclear microreactor. A climate-friendly alternative to diesel generators, Radiant's Kaleidos 1MW microreactor will be the world's first portable, zero-emissions power source that works anywhere. We plan to test our development reactor by 2026 and if successful, it will be the first new commercial reactor design to achieve a fueled test in over 50 years. Our microreactor can bring power to remote parts of the world and provide backup power for life-saving applications in hospitals or disaster-relief scenarios.
Why Work With Us
Our world-class team has prior experience in complex hardware development from SpaceX, McMaster, The Boring Company, and renowned national laboratories that define our mentality to radically improve our microreactors. We care deeply about our mission to reduce carbon emissions, and have fun while doing so from trivia nights to ski retreats.
Gallery
