About Radiant

Radiant is an El Segundo, CA-based company building the world's only mass-produced, transportable nuclear microreactors. The U.S. grid is under growing strain, with power demand accelerating, driving higher utility costs, rising carbon emissions, and interconnection backlogs. Radiant has a solution, transportable, on-site power. Our first reactor, Kaleidos, is 1 megawatt: small enough to be factory-built, transported by land, sea, or air, and deployed wherever power is needed. 1 MW can power 1000 homes for five years. Ship it back and we refuel for a 20 year operating life. We made energy a product that can be used for critical infrastructure like military bases, data centers, hospitals, and remote sites, as well as the commercial main street businesses that keep America running. Founded in 2020, Radiant is under contract to deliver power to the U.S. Army, Navy and Air Force and has signed pre-order agreements with Equinix, with deployments beginning in 2028.

About the Role

Radiant is seeking an Engineering Manager to lead the Electronics team. This team owns the electronics architecture for terrestrial reactor controls, with a long-term path toward space reactor applications. You will be the technical authority for custom hardware—low-noise analog front ends, high-speed data conversion, DSP, and PCB design—from requirements capture through field operation.

Responsibilities & Duties

Build and manage a team of electrical engineers to develop and test the next generation of reactor control systems.

Own the electronic architecture for terrestrial and, in the future, space reactors.

Collaborate with other teams to define requirements for all electronic designs, environmental, noise, accuracy, input range, and reliability.

Own acceptance and qual testing of all in-house PCB designs to verify design and build to requirements.

Required Qualifications & Skills

Bachelor’s degree in electrical engineering, or a related field.

5+ years managing electrical engineers.

5+ years designing mixed signals, analog, or RF hardware.

Proven track record of PCB design. With considerations for low noise, matched impedance signal routing, conduction cooling, robust internal and external connectors. Preferably in Altium.

Strong experience with industrial signal types, 4-20mA, RTD, Thermocouples, and Resolvers.

Experience with high-speed, sensitive signals.

Experience with digital communication interfaces such as SPI, I2C, CAN, Ethernet, and RS422.

Experience with EMI/EMC best practices for design and strategies to mitigate exceeding levels.

Desired Qualifications & Skills

Master’s degree in electrical engineering, physics, aerospace, mechanical, nuclear engineering, or a related field.

Experience with rad hardened circuit design.

Experience with control system design for nuclear applications.

Experience with nuclear instrumentation and signals.

Experience with applying IEEE-603 in electrical designs.

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.

Benefits and Perks

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.

Nuclear Engineering Certificate Program: 100% covered educational program with Penn State University, for eligible employees, to rapidly upscale into nuclear.

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.