About Radiant

Radiant is an El Segundo, CA-based company building the world's only mass-produced, transportable nuclear microreactors. The U.S. grid is under growing strain, with power demand accelerating, driving higher utility costs, rising carbon emissions, and interconnection backlogs. Radiant has a solution, transportable, on-site power. Our first reactor, Kaleidos, is 1 megawatt: small enough to be factory-built, transported by land, sea, or air, and deployed wherever power is needed. 1 MW can power 1000 homes for five years. Ship it back and we refuel for a 20 year operating life. We made energy a product that can be used for critical infrastructure like military bases, data centers, hospitals, and remote sites, as well as the commercial main street businesses that keep America running. Founded in 2020, Radiant is under contract to deliver power to the U.S. Army, Navy and Air Force and has signed pre-order agreements with Equinix, with deployments beginning in 2028.

About the Role

We are looking for an Environmental, Health & Safety (EHS) Manager to serve as the company EHS authority supporting Radiant's multi-site manufacturing and operations in a lean, fast-moving environment. This role owns the strategy, development, implementation, and execution of EHS programs and initiatives that protect employees, ensure regulatory compliance, and scale with the business. The EHS Manager maintains a strong shop-floor presence and partners closely with the engineering, manufacturing, and facilities teams to identify hazards, reduce risk, and embed safety and compliance into daily operations. This role balances hands-on field engagement with strategic thinking, change management, program ownership, regulatory interface, and continuous improvement leadership.

Responsibilities & duties

Develop Radiant's EHS strategy and own the related implementation roadmap, based on both regulatory compliance and first-principles thinking around business risk.

Work with the executive team and cross-functional leadership to affect change throughout the organization and lead Radiant through its next phase of EHS and operational maturity.

Serve as company- and site-level authority for OSHA / Cal-OSHA compliance, including inspections, regulatory correspondence, record-keeping, and corrective action management.

Develop, implement, and maintain required safety programs(e.g., IIPP, Hazard Communication, Lockout/Tagout, Electrical Safety, Hot Work, Contractor Safety) to support a growing multi-site, multi-State manufacturing operation.

Develop and lead all safety trainings for the organization as needed.

Define and maintain PPE requirements, conduct hazard assessments, and ensure proper selection, training, and usage.

Own emergency preparedness programs, including Emergency Action Plans, evacuation procedures, drills, and emergency response coordination.

Partner with the facilities team on fire suppression, alarm, detection systems, and other relevant programs.

Partner with shop-floor teams to identify supportive EHS solutions and embed the EHS mindset into daily work.

Track and report on key EHS metrics: drive proactive risk reduction.

Lead incident reporting, investigations, and root cause analysis for injuries, fires, spills, near-misses, and emergency events.

Manufacturing & operations risk mitigation

Partner closely with the manufacturing and operations teams to identify hazards and implement engineering and administrative controls.

Evaluate EHS risk for new processes, equipment, tooling, and work centers prior to installation or commissioning to influence design decisions and ensure safety requirements are met.

Maintain a regular shop-floor presence to identify hazards, observe operations and drive continuous improvement initiatives.

Hazardous materials & waste management

Own hazardous materials management, including inventory, SDS, labeling, storage compatibility, locations and quantities.

Ensure compliant handling and storage of hazardous materials, including flammable and combustible materials.