Lead sourcing and management of goods and services for indirect categories, focusing on strategic sourcing, negotiations, risk management, and supplier relationships.

The Talent Sourcer will design and execute candidate sourcing strategies, engaging top talent, managing pipelines, and collaborating with recruiters to fulfill hiring needs at Radiant.

Manage end-to-end accounts payable operations, processing invoices, vendor management, and ensuring compliance while building scalable systems for growth.

The FPGA Engineer designs and validates FPGA systems for reactor control, collaborating with hardware and software teams, and ensuring timely and accurate system operations.

The Senior Power Systems Engineer will lead design and validation of power systems for portable nuclear microreactors, collaborating across teams and conducting system studies and modeling.

The CNC Programmer will program, set up, and operate CNC machines to produce precision components for microreactors, ensuring high-quality manufacturing through collaboration and problem-solving.

As a Senior Mechanisms Engineer, design and develop mechanisms for a portable nuclear microreactor, perform analysis, and manage manufacturing processes.

The Regulatory Systems Engineer will ensure compliance with nuclear regulations, perform detailed safety and risk analyses, and manage communication with regulators throughout the reactor development process.

The Loads & Dynamics Engineer will conduct structural loads, dynamics, and vibration analyses for a portable nuclear reactor, influencing design and ensuring integrity through various phases of product lifecycle.

Design and develop structures for a portable nuclear microreactor, conducting analyses and managing manufacturing while ensuring safety and efficiency.

Develop hardware solutions as part of the electrical team, assist in electrical design, system integration, and testing while collaborating with interdisciplinary teams.

The Senior DevOps Engineer will lead software infrastructure and automation projects, collaborate with teams, and implement scalable DevOps practices, optimizing tools and security in a clean energy startup.

Collaborate with mechanical and electrical engineers to design and integrate electrical components for portable nuclear microreactors, focusing on mechanical design and thermal analysis.

The Supply Chain Manager will lead procurement, sourcing, and contract management for a nuclear microreactor startup, ensuring quality and cost-effectiveness.

The Talent Sourcer will identify and engage top-tier talent, design sourcing strategies, manage candidate pipelines, and represent Radiant at events. The role focuses on building the team for the world's first portable nuclear microreactor and requires strong research and communication skills.

The Senior Mechanical Engineer will analyze and test high-speed turbomachinery, focusing on rotordynamic behavior and bearing selection for the Kaleidos microreactor's power generation systems.

The Senior Tooling Engineer will develop and innovate custom tooling for the microreactor system, collaborating with design and manufacturing teams to ensure effective production tooling for assembly and fueling operations.

Lead and mentor software engineers in developing reactor physics modeling and simulation systems. Drive technical excellence and collaborate with cross-functional teams.

Hands-on role assembling and integrating turbomachinery prototypes and first-article hardware. Create assembly instructions, perform rotor stacking, bearing installation, balancing, alignment, and support tooling, SOPs, and cross-functional testing readiness while documenting lessons learned and iterating with design and manufacturing teams.

Develop, maintain, execute, and automate unit, SiL, HiL, and hardware test cases for reactor control systems. Analyze Simulink models, interpret requirements, run regression test campaigns, document results, and collaborate with engineers to identify and resolve defects.