Senior Electrical Engineer

Radiant is an El Segundo CA-based startup building the worlds first mass-produced portable nuclear microreactors. The companys 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. Radiants 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.

Radiant is seeking a talented Senior Electrical Engineer to own designs from requirements capture through operation. The candidate will be directly responsible for components of the nuclear microreactor control and measurement systems. The ideal candidate should be comfortable jumping from designing circuit boards to integration work interfacing with fault-tolerant off-the-shelf hardware. This role requires collaboration with multi-disciplinary teams designing the nuclear reactor core fluid heat transfer systems and structures.

Responsibilities and Duties:

• Collaborate with multidisciplinary teams to support the architecture design implementation and testing of the microreactor electrical control systems
• Design and develop industrial electrical control hardware including schematics wiring diagrams harnessing and integration assemblies
• Lead design of fault-tolerant and safety-critical electrical systems emphasizing reliability maintainability and regulatory compliance
• Develop and review electrical interface designs between control systems power equipment and instrumentation
• Ensure designs comply with applicable electrical codes and safety standards including NFPA and NEC requirements
• Perform SCCR and Arc Flash calculations

Required Qualifications and Skills:

• Bachelors degree in electrical engineering or related field
• 5 years of experience designing electrical hardware
• Experience designing fault-tolerant and safety critical hardware
• Experience with Ethernet EtherCAT Modbus CANbus RS-422 or other communications protocols
• Experience selecting integrating and troubleshooting sensors including pressure transducers RTDs thermocouples shaft speed and position sensors IEPE vibration sensors and MEMS-based sensors
• Experience using electrical design software such as AutoCAD Electrical Zuken or similar schematic and wiring design tools
• Experience designing analyzing and working safely with industrial power systems including 120 VAC 208 VAC and 480 VAC equipment including applicable electrical safety practices
• Strong electrical engineering fundamentals
• Experience specifying and integrating Variable Frequency Drives (VFDs) soft starters and motor control centers (MCCs)

Desired Qualifications & Skills:

• Experience in electrical architecture make vs. buy trades
• Experience with Siemens NX
• Experience with PLCs Twincat structured text programming
• Familiarity with EMI/EMC mitigation techniques and testing
• Experience with Python C/C or scripting languages for test automation data acquisition or diagnostics
• Experience supporting nuclear instrumentation systems
• Experience with FMEAs and hazard analysis
• Experience with industrial network architecture and deterministic control networks

• 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 compensates people for impact and invests in those who continue to raise the bar. Radiants new hire compensation package includes base salary substantial equity grants and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance experience education and qualifications and are designed to support continued growth as scope responsibility and impact expand at Radiant.

The best of todays advanced reactor builders dont wait for job postings. They join the winning team. If thats you contact us directly for immediate opportunities: .

Benefits and Perks for Eligible Employees:

• Stock: Substantial incentive stock plan for all full-time employees.
• Medical: 100% premium coverage for base Silver level plan for employee 50% premium coverage for dependents. Platinum plans available.
• One Medical: Sponsored memberships for eligible employees and their dependents.
• Vision: 100% premium coverage for top tier plan 50% for dependents.
• Dental: 100% premium coverage for top tier plan (including orthodontia) 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.
• Burgeoning satellite offices in Oak Ridge TN and Washington D.C. near Capitol Hill.

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 applicants capacity to serve in compliance with U.S. export controls.