Electrical Engineer (Embedded Hardware)

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.

Embedded Hardware Engineer

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:

• Work with multi-disciplinary team to support the architectural design, implementation, and testing of a 1 MW nuclear microreactor electrical control system.

• Develop electrical schematics, PCBs, harnessing, tests, and integration hardware for fault-tolerant and safety-critical control.

• Responsible engineer for electrical instrumentation and subsystems, examples:

  • Systems: Reactivity Control, Reactor Protection, Power measurement, Primary Loop, Secondary Loop, Turbomachinery, Battery.

  • Sensors: Neutron and gamma flux, shaft speed, pressure, temperature, displacement, acceleration, and flow sensors.

Required Qualifications and Skills:

• Bachelor’s degree in electrical engineering or related field.

• 5+ years experience designing electrical hardware.

• Experience designing fault-tolerant and safety critical hardware.

• Experience with sensor and actuator interface design such as 4-20mA, Thermocouple, solenoids, etc.

• Experience utilizing one of: Ethernet, CANbus, RS-422, or other communications protocol.

• Proficiency with circuit board design software tools (Altium Designer, OrCAD, KiCAD, etc).

Desired Qualifications & Skills:

• Experience in electrical architecture make vs. buy trades.

• Familiarity with Python and C/C++.

• Experience with System-on-Chip and/or FPGA layouts.

• Experience with industrial controls systems.

• Experience with safety-critical systems.

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.