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Lead verification of safety-critical FPGAs for nuclear reactor safety, control, instrumentation, sensor processing, actuator handling, and communications. Develop SystemVerilog UVM/OVM testbenches, verification plans, regression suites, constrained-random tests, and coverage analysis. Collaborate with RTL, hardware, embedded software, and test engineers to resolve bugs and close functional coverage. The role is fully onsite in El Segundo and may require extended hours or weekends.

Owns visibility and delivery across Radiant’s IT and security program portfolio. The role establishes tracking systems, operating cadences, integrated schedules, risk management, reporting, and escalation processes across infrastructure, construction, compliance, and site programs. It coordinates IT buildout with facilities and contractors, supports CMMC and NIST compliance tracking, produces technical documentation and executive updates, and drives accountability across teams without direct authority. The position is fully onsite in El Segundo with up to 15% travel.

Design, analyze, fabricate, and improve custom production equipment for manufacturing and assembling portable nuclear microreactors. Collaborate with design and manufacturing engineers, develop semi-remote fueling and defueling equipment, and manage suppliers for components and fabrication. The role requires mechanical equipment design, CAD modeling, fabrication drawing development, GD&T, and analytical or finite element analysis methods. This position is fully onsite in El Segundo and may require extended hours or weekends.

Own full-cycle technical recruiting to source, assess, and close top talent across technical and corporate roles. Partner with hiring managers and leadership to define hiring strategies, develop structured processes, drive proactive sourcing and employer branding, represent Radiant at events, and use data to improve recruitment outcomes.

The Director of Regulatory Affairs will lead regulatory and licensing strategies and ensure compliance with the NRC, driving product development and market entry.

The Senior Electrical Engineer will design and develop electrical control systems for portable nuclear microreactors, ensuring safety and compliance while collaborating with cross-disciplinary teams.

Lead the design and validation of electrical power systems for portable nuclear microreactors, collaborating with cross-functional teams on system performance and safety.

Manage sourcing and procurement for indirect categories, negotiate contracts, optimize costs, ensure supplier compliance, and collaborate with cross-functional teams.

Lead the authorization process for reactor deployment; manage licensing execution, customer relationships, collaborate with teams, and mentor junior members.

The Senior Power Electronics Engineer designs high-voltage electronics and converters for nuclear microreactors, optimizing efficiency and conducting simulations.