About Radiant

Radiant is an El Segundo CA-based startup building the worlds first mass-produced portable nuclear microreactors. The companys first reactor Kaleidos is a 1-megawatt fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. 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. Radiants unique practical approach to nuclear development leverages modern software engineering to rapidly deliver safe factory-built microreactors that use existing well-qualified materials. Founded in 2020 Radiant is on track to test its first reactor at the Idaho National Laboratory this summer with initial customer deliveries beginning in 2028.

The Role

We are looking for a Supply Reliability Engineer who builds supplier programs that prevent problems rather than react to them. You will own the development qualification and long-term reliability of Radiants supply base establishing the processes standards and supplier capabilities that ensure the right part arrives to the right standard every time. While youll have the technical depth to handle non-conformances and corrective actions when they arise your primary focus is upstream: strengthening supplier processes closing capability gaps and building a supply base that performs without constant intervention.

This is a builder role: the old house is being brought down and a new foundation is being poured but we still need to build the structure apply the finishes and pass final inspection. Youll own what exists upgrade aging systems and create something the industry hasnt seen before.

Were not here to maintain the status quo in nuclear quality were here to raise the bar. Radiant is building a supplier reliability program from the ground up with a singular goal: the right part to the right standard on time every time. If you want to do the most meaningful quality work of your career in an industry that hasnt been disrupted in decades this is that opportunity.

Responsibilities & Duties:

• Own the supplier qualification and onboarding process end-to-end pre-assessments capability reviews audit execution and formal approval to the Approved Supplier List.

• Own refine and expand quality program documentation including quality clauses commodity-specific requirements and the Supplier Quality Manual building on existing foundations and authoring what doesnt yet exist.

• Develop supplier capability improvement plans identify process gaps partner with suppliers to close them and track progress against defined milestones before problems reach Radiants dock.

• Own Radiants procurement assurance and acceptance framework define how items are accepted across supplier types and quality levels establish purchase order quality requirements certifications material traceability and compliance documentation and build toward a graded systematized model.

• Execute supplier audits and manage supplier performance audit against Radiant quality program requirements author findings to closure and drive structured improvement plans with emphasis on early intervention over lagging indicators.

• Partner cross-functionally with design engineering manufacturing and materials teams to translate technical requirements into supplier-facing quality requirements before parts are ordered.

• Process and disposition supplier quality issues when they arise deviation requests non-conformance reports supplier corrective action requests root cause analysis and verification of corrective action effectiveness.

Required Qualifications & Skills:

• Bachelors degree in Engineering Quality Materials Science or a related technical field

• 36 years of hands-on experience in supplier quality supplier development or supplier reliability engineering in a regulated industry (nuclear aerospace defense or medical device)

• Demonstrated ability to independently process supplier quality transactions: deviation requests non-conformance reports supplier corrective action requests purchase order quality reviews and cert package review without step-by-step guidance

• Proven experience owning or drafting quality program documents: quality clauses supplier requirements inspection instructions or equivalent

• Working knowledge of ISO 9001 AS9100 or equivalent quality management systems including supplier audit methods and corrective action management

Desired Qualifications & Skills:

• Experience in the nuclear industry or direct familiarity with NQA-1 10 CFR 50 Appendix B 10 CFR 21 ASME BPVC Section III and/or VIII

• Manufacturing process depth in one or more of the following: machining welding casting forming special processes or precision fabrication sufficient to audit a suppliers process controls and identify gaps

• Certified NQA-1 Lead Auditor or documented progress toward certification

• Qualified Inspector status (ASME Section III) or working toward it

• Exposure to ISO 17025 accredited laboratories or third-party inspection bodies

• Experience at an early-stage company or program where processes were built or advanced not inherited

Who You Are:

• You take full ownership of your domain you identify what needs to be built or improved write the procedure when one doesnt exist and drive it without waiting to be asked.

• You solve problems from first principles when a standard doesnt map cleanly to the situation you reason from the underlying requirement rather than defaulting to precedent or guesswork.

• Attention to detail is non-negotiable in a safety-critical auditable environment imprecision in a quality record a clause or an audit finding has real downstream consequences.

• You hold suppliers and yourself to a high standard and youre energized by preventing failures rather than resolving them youd rather fix the suppliers process than write the corrective action.

• You care about the mission: bringing clean reliable energy to places that need it most and you understand that quality in this industry is not bureaucratic overhead its a safety imperative.

• You thrive in a fast-paced resource-constrained environment where the work is hard and the stakes are real.

Additional Requirements:

• Must be willing to work extended hours and weekends as necessary to accomplish our mission.

• Must work 100% onsite at El Segundo HQ.

Benefits and Perks

• 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.

Total Compensation and Benefits
Radiant compensates people for impact and invests in those who continue to raise the bar. Radiants new hire compensation package includes base salary substantial equity grants and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance experience education and qualifications and are designed to support continued growth as scope responsibility and impact expand at Radiant.

The best of todays advanced reactor builders dont wait for job postings. They join the winning team. If thats you contact us directly for immediate opportunities: .

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.

This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicants capacity to serve in compliance with U.S. export controls.

Required Experience:

IC