Senior Engineering Technician

Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt failsafe microreactor that can be transported anywhere power is needed and run for up to five years without the need to refuel. Portable nuclear power with rapid deploy capability can replace similar-sized diesel generators, and provide critical asset support for hospitals, data centers, remote sites, and military bases.

Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-built microreactors that leverage existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor next year at the Idaho National Laboratory, with initial customer deliveries beginning in 2028.

Radiant is seeking a Senior Engineering Technician who will have the opportunity to apply a variety of skillsets while fabricating and assembling our development microreactor unit. Additionally, you will be instrumental in building large and small-scale test rigs, making prototype parts and tooling, sourcing tools to execute builds, material handling, and more. You will be the fourth foundational technician team member at Radiant with a high degree of autonomy and initiative is needed.

You will build and maintain our prototype shop in our new El Segundo headquarters and use a variety of tools as it comes to shop activities (Machining, welding, metal forming, electrical work, plumbing). You’ll have the opportunity to bring significant technical contribution to the team and lead us to the successful fueling of a new reactor design in over 50 years by 2026.

• Fabricate piece parts to print using shop equipment: mill, lathe, welders, metal forming tools, hand tools, etc.
• Own the assembly and commissioning of test rigs and production builds.
• Perform troubleshooting and root cause investigation of mechanical, electrical, thermal, and pneumatic issues.
• Partner and collaborate with engineers to develop solutions and improvements for hardware design, fabrication, and assembly.
• Abide by a high level of operational standards regarding safety, reliability, and cleanliness.
• Perform other tasks as needed. We are a small company, and you may need to perform tasks outside your normal duties and responsibilities.

• High school diploma or equivalent certificate.
• 4+ years of fabrication or assembly work experience.
• Positive attitude and able to work well on a team.
• Able to work independently and efficiently with minimal supervision.
• Able to stay organized and strong attention to detail.
• Able to use traditional inspection tools for the inspection of parts and assemblies.
• Able to read mechanical drawings and interpret tolerances.
• Able to read and interpret fluid or electrical schematics.
• Experienced in manufacturing with the use of machine tools, saws, grinders etc.
• Physical effort including standing, lifting, and carrying equipment up to 50 lbs. unassisted.
• Able to work in outdoor environments as needed.
• Ability to work at elevated heights occasionally (scissor lifts, ladders, etc.)
• Ability to travel on occasion for offsite support.

• Experience operating and working with high pressure and temperature systems.
• Experience with MIG and TIG welding.
• Experience with CNC programming and manual machine operation.
• Experience with GD&T interpretation preferred.
• Knowledge/experience working with electrical components and high voltage systems.
• Experience operating safely in shop environments.
• Experience lifting, rigging, and preparing for heavy crane operations of complicated parts.
• Proficient computer skills; comfortable with using email and the Microsoft Office suite.

• Must be willing to work extended hours and weekends as necessary to achieve company goals.
• Must work 100% onsite at El Segundo HQ.

This is a non-exempt hourly role eligible for overtime pay.

Hourly Range

$41 - $56 USD

Radiant compensates people for impact and invests in those who continue to raise the bar.…