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.
Senior Engineering Technician
Radiant is seeking an 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 a 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.
Responsibilities and Duties:
- Perform MIG, TIG, and tube welding on various metals including stainless steel, aluminum, and carbon steel.
- Read and interpret blueprints, technical drawings, and welding symbols.
- Operate welding equipment and tools with precision to meet tight tolerances.
- Conduct inspections to ensure all welds meet internal and external quality standards.
- Assist with tasks such as:
- Basic machining (lathe, mill, drill press)
- Metal fabrication (cutting, grinding, fitting)
- electrical work (wiring, troubleshooting, assembling components)
- Support assembly and testing of mechanical or electro-mechanical systems.
- Collaborate with engineers and technicians to improve weld and build processes.
Required Skills and Qualifications:
- 5+ years of professional welding experience with MIG, TIG, and tube welding.
- Proficient with welding on stainless steel, aluminum, and mild steel..
- Ability to lift 50 lbs and stand for extended periods.
- Ability to work independently and efficiently with minimal supervision.
- Ability to stay organized and strong attention to detail.
- Ability to use traditional inspection tools for the inspection of parts and assemblies.
- Ability to read mechanical drawings and interpret tolerances.
- Ablility to read and interpret fluid or electrical schematics.
- Experienced in manufacturing with the use of machine tools, saws, grinders etc.
- Ability 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.
Desired Skills and Qualifications:
- Experience operating and working with high pressure and temperature systems.
- 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.
Additional Requirements:
- Must be willing to work extended hours and weekends as necessary to achieve company goals.
- Must work 100% onsite at El Segundo HQ.
Total Compensation and Benefits
Radiant's new hire compensation package includes base salary, substantial equity grants, and comprehensive benefits. Total compensation and level are determined through a holistic evaluation of your interview performance, experience, education, and qualifications.
Benefits and Perks for Eligible Employees:
- Stock: Substantial incentive stock plan for all full-time employees.
- Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.
- One Medical: Sponsored memberships for employees and their dependents.
- Vision: 100% top tier plan coverage + 50% for dependents.
- Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.
- Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits.
- 8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees.
- Daily catered lunch. Free snacks and drinks.
- Flexible PTO policy. Remote workday allocation.
- Company and team-bonding events, happy hours and in-person camaraderie.
- Beautiful El Segundo headquarters close to the Pacific Ocean.
We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.
Unfortunately, we are unable to provide visa sponsorship at this time.
This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.
Top Skills
What We Do
Radiant is a clean energy startup building a nuclear microreactor. A climate-friendly alternative to diesel generators, Radiant's Kaleidos 1MW microreactor will be the world's first portable, zero-emissions power source that works anywhere. We plan to test our development reactor by 2026 and if successful, it will be the first new commercial reactor design to achieve a fueled test in over 50 years. Our microreactor can bring power to remote parts of the world and provide backup power for life-saving applications in hospitals or disaster-relief scenarios.
Why Work With Us
Our world-class team has prior experience in complex hardware development from SpaceX, McMaster, The Boring Company, and renowned national laboratories that define our mentality to radically improve our microreactors. We care deeply about our mission to reduce carbon emissions, and have fun while doing so from trivia nights to ski retreats.
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