Top Tech Jobs & Startup Jobs in Los Angeles, CA

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.

Designs and develops critical reactor structures, including shielding, container, graphite, and metallic systems. Performs trade studies, material selection, thermomechanical and dynamic structural analyses using hand calculations and finite element tools. Leads assembly, manufacturing, integration, testing, BOM management, supplier development, schedules, and subsystem FMEA. Collaborates across engineering disciplines and works onsite in El Segundo, with extended hours as needed.

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.

Own top-of-funnel sourcing to build pipelines of passive technical and corporate talent. Design outreach campaigns, leverage sourcing tools, track pipelines, provide market intelligence, represent Radiant at events, and partner with recruiters and hiring managers to fill engineering-heavy roles.

Support design, build, and maintenance of NI PXI-based HIL test benches. Configure test hardware, integrate with Digital Twin, execute test procedures, collect and document data, troubleshoot hardware, and assist senior engineers with electrical integration and harness assembly.

The Mechanical Engineer will design fluid systems, perform thermal analysis, manage assembly, select components, and conduct testing to support a nuclear microreactor project.

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.

Design and develop critical structures for commercial reactor systems. Responsibilities include structural analysis, developing designs, and overseeing manufacturing processes.

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