Top Tech Jobs & Startup Jobs in Los Angeles, CA

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.

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.

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

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