About the role
About Radiant 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, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. 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 leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor at the Idaho National Laboratory this summer, with initial customer deliveries beginning in 2028.
About
the Role Radiant is seeking a talented Senior Manager, Power Systems, to build and lead
the team that designs, models, and validates electrical power systems for our nuclear microreactor platform. You will manage a team of power systems and power electronics engineers, set technical direction and priorities, and ensure
the team delivers safe, stable, and reliable power across grid-connected, islanded, rapidly deployable, and space-based environments. In this role, you will guide your team through power system studies from early architecture tradeoffs through detailed modeling, testing, and system validation, while also driving the development of in-house power electronics, including converters, inverters, and generator controls, needed to support both terrestrial and space-based reactor platforms. This role is central to commercializing Earth's first mass-produced portable nuclear reactors, and to extending that capability beyond Earth.
Responsibilities & Duties Build, manage, and grow a team of power systems and power electronics engineers, including hiring, mentoring, and performance management. Set team priorities and roadmaps in partnership with leadership from power conversion, controls, nuclear, and software. Communicate progress, risks, and results to executive leadership and cross-functional stakeholders. Lead
