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Provides executive support to the Chief Nuclear Officer, manages schedules and communications, coordinates office administration, reception, visitors, shipping and receiving, supplies, budgets, events, and contractors. Supports People Operations with recruitment scheduling and onsite logistics, organizes company celebrations, enforces front-office security protocols, and handles ad hoc administrative and analytics tasks in a dynamic environment.

Designs and develops critical nuclear reactor mechanisms, including actuators and valves. Responsibilities include trade studies, material selection, thermomechanical and kinematic analysis, CAD-based assembly design, manufacturing and testing, BOM management, supplier development, scheduling, and FMEA. The role requires collaboration across engineering disciplines and ownership of mechanism integration from design through testing. This position is fully onsite in El Segundo and may require extended hours or weekend work.

Supports indirect procurement across IT, facilities, MRO, professional services, consumables, and R&D. Responsibilities include supplier evaluation, sourcing, SOW and contract support, purchase order tracking, vendor coordination, cost and quality analysis, technical supply chain risk identification, and process improvement. The role partners with engineering, operations, finance, and production, requiring strong mechanical aptitude, analytical skills, communication, and willingness to work onsite with occasional supplier travel.

Supports sourcing and procurement for nuclear microreactor components, materials, and services. Responsibilities include purchase order tracking, supplier relationship management, quote and cost analysis, supplier risk assessments, performance metrics, supplier evaluation, negotiation preparation, contract-term review, and translating technical requirements into sourcing criteria. The role requires collaboration with engineering, supplier development, quality, and operations teams and is fully onsite in El Segundo with travel to supplier locations up to 30%.

Owns manufacturing and inspection processes for complex nuclear reactor components and assemblies. The role drives DFM/DFA, develops and qualifies production processes, creates manufacturing documentation and tooling, resolves defects, supports suppliers, and improves production repeatability, yield, throughput, cost, and scalability. Requires hands-on collaboration with design, quality, test, supply chain, technicians, and production personnel in a fully onsite environment.

Own manufacturing and inspection processes for complex nuclear reactor hardware, driving DFM/DFA, process qualification, tooling, documentation, supplier development, quality controls, and production scalability. Partner with design, quality, test, supply chain, and operations teams to troubleshoot manufacturing issues, implement corrective actions, and improve repeatability, throughput, yield, and cost. This hands-on role supports hardware builds, integration, and transition from prototype development to repeatable production.

Own the frontend of Radiant’s telemetry and fleet management platform for portable nuclear reactors. Build reliable, performant React and TypeScript interfaces for data analysis, device configuration, telemetry monitoring, and mission-critical operations. Collaborate across the Mission Software team and company stakeholders while contributing to complex UI systems, debugging, code reviews, and hardware-connected applications. This is a fully onsite role in El Segundo with occasional extended hours and weekend work as needed.

Owns Radiant’s Microsoft 365 GCC High, Entra identity infrastructure, IAM automation, Intune endpoint management, email security, Purview information protection, SaaS platforms, and AWS workloads. The role builds automated joiner-mover-leaver processes, manages access and compliance controls, supports CMMC evidence collection, delivers platform projects, and maintains networking fundamentals. This is a fully onsite, high-ownership systems administration position requiring occasional extended hours and weekend work.

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.