Jobs at Radiant Industries

Owns the mechanical architecture, design, analysis, testing, and production readiness of high-speed turbomachinery in a nuclear power system. Responsibilities include rotor dynamics, structural integrity, bearings, seals, tolerancing, thermal analysis, system integration, validation, troubleshooting, supplier engagement, and cross-functional technical leadership. The role serves as the Responsible Engineer for rotating assemblies operating at high temperatures, pressures, and speeds, with full ownership through design, build, and test.

Lead development, qualification, and production acceptance testing for nuclear microreactor fluid and mechanical systems. Responsibilities include test strategy, procedure development, hardware integration, instrumentation, data acquisition, risk mitigation, test execution, post-test inspection, data analysis, supplier coordination, and root-cause investigations. The role serves as Test Conductor and Test Director while collaborating with multidisciplinary engineering teams in a regulated, high-reliability environment.

Leads test engineering strategy, infrastructure development, execution, data analysis, and team leadership for complex nuclear microreactor hardware and systems. Builds test rigs and facilities, establishes safety and calibration processes, directs development, qualification, and production acceptance testing, correlates results with analytical predictions, and supports failure investigations and corrective actions. Partners with design, manufacturing, quality, supply chain, and operations teams while developing test personnel and organizational standards.

Own the mechanical architecture, design, analysis, testing, and integration of high-speed turbomachinery for a nuclear-driven closed-loop Brayton cycle system. Lead rotor dynamics, structural integrity, bearings, seals, shafting, tolerancing, validation, and hardware troubleshooting. Serve as the technical authority for rotating assemblies, collaborating with electrical, thermal, manufacturing, suppliers, and test teams to deliver reliable, producible, production-ready hardware.

Conduct and support development, qualification, and acceptance testing for nuclear microreactor mechanical and fluid systems. Responsibilities include test planning and execution, procedure development, hardware integration, risk mitigation, supplier sourcing, post-test inspections, data review, and performance analysis. The role also involves serving as a test conductor or director, improving test processes, supporting instrumentation and fluid-system testing, and maintaining compliance with DOE and NRC standards. This is a fully onsite position requiring occasional extended hours and weekends.

Design and integrate mechanical aspects of electrical components and subsystems, including enclosures, brackets, mounts, harness routing, and thermal management. Create CAD models and drawings in Siemens NX, perform structural and thermal analyses, support material and fastener selection, and contribute to system integration, troubleshooting, validation, manufacturing, and testing. The role requires collaboration across mechanical, electrical, software, and systems engineering disciplines in a fully onsite, high-reliability hardware environment.

Own operational projects from planning through closeout, including staffing, budgeting, subcontractor management, stakeholder coordination, execution, and risk reporting. Support program leaders and site leads on reactor testing, delivery, customer deployment exercises, and other operational initiatives. The role requires onsite work in El Segundo when not traveling, extended hours as needed, and travel up to 20% annually.

Owns the mechanical architecture, design, analysis, integration, testing, and production readiness of high-speed turbomachinery in a 1 MW closed-loop Brayton cycle nuclear power system. Leads rotor dynamics, structural integrity, bearings, seals, shafting, tolerancing, and system interfaces while supporting hardware assembly, troubleshooting, validation, and root-cause analysis. Serves as the technical authority for turbomachinery without direct people-management responsibility.

Owns the mechanical architecture, design, analysis, testing, and production readiness of high-speed turbomachinery in a 1 MW closed-loop Brayton cycle nuclear power system. Responsibilities include rotor dynamics, structural integrity, bearings, seals, tolerancing, thermal and spin testing, hardware troubleshooting, subsystem integration, supplier engagement, and technical leadership across engineering and manufacturing teams.

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.

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

Own end-to-end accounts payable operations, including high-volume invoice processing, payment runs, vendor management, reconciliations, controls, compliance, and audit support. Build scalable AP processes and documentation, optimize QuickBooks, ION, and Ramp, and lead AP requirements for ERP selection, implementation, and migration. Partner with Supply Chain and Finance, support tax reporting, and train employees on AP policies and tools.

Leads electrical architecture and custom PCB development for a portable nuclear microreactor. Responsibilities include mixed-signal and analog design, power distribution, high-speed routing, signal and power integrity, schematic capture, layout, board bring-up, validation, qualification, and field deployment. The role provides technical leadership, mentors electrical engineers, manages hardware risks, and collaborates with firmware, FPGA, DSP, and systems teams. Experience with high-reliability or harsh-environment electronics is required.

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.

Lead legislative affairs, engage with Congress, shape policy for advanced nuclear systems deployment, and develop congressional strategy supporting federal programs.

Leads daily accounting operations, month-end and year-end close, financial reporting, reconciliations, fixed assets, inventory accounting, internal controls, and audit support. Manages GAAP compliance, accounting systems and process improvements, collaborates cross-functionally, and mentors junior accounting staff. The role is fully onsite in El Segundo and may require extended hours or weekends.

Designs, configures, integrates, and supports ERP finance modules across accounting, FP&A, treasury, procurement, and tax. Responsibilities include ERP configuration, system integrations, SQL reporting, data migration, Tier 2/3 support, financial close support, release testing, SOX controls, audit support, documentation, and process automation. The role requires collaboration between Finance and IT to deliver accurate, scalable, and compliant systems.

Leads deterministic reactor safety analyses for normal, transient, and accident conditions. Develops thermal-hydraulic, fuel performance, source-term, radiological consequence, uncertainty, and sensitivity models. Collaborates across engineering, testing, materials, and regulatory teams to validate models, resolve technical issues, establish safety requirements, and support reactor design, licensing, testing, and regulatory documentation for an advanced portable microreactor.

Leads testing and verification of nuclear reactor components, mechanisms, instrumentation, and subsystems. Owns test planning, procedures, execution, data analysis, documentation, and requirements traceability. Collaborates across nuclear, mechanical, thermal, controls, and test engineering teams to evaluate performance, resolve anomalies, investigate failures, and implement design improvements. Supports reactor operations, commissioning, readiness assessments, and integrated testing for advanced microreactor hardware.

Owns end-to-end design, analysis, manufacturing, supplier development, assembly, and testing of nuclear reactor fluid systems, including primary and power conversion loops, compressors, valves, heat exchangers, and piping. Performs thermal-fluid analysis, trade studies, FMEA, BOM management, requirements development, and test planning. The role is fully onsite in El Segundo and requires 8+ years of fluids-system engineering experience.