Program Manager Jobs 2026 (Now Hiring) – Smart Auto Apply

About Radiant

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, 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. Radiant's 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.

About the Role

Radiant is seeking an experienced Regulatory Program Manager who loves to think outside the box and challenge convention; in this role you will lead the authorization process for reactor deployment with our military partners. You will be responsible for regulatory submissions and timelines, collaborating across technical teams to create and deliver a formal application. You will lead interactions between regulators and the engineering team to obtain clarity and answers on regulation as well as manage and provide mentorship to junior members of the team. This is an opportunity to bring advanced nuclear technologies to market while also influencing the federal government and modernizing regulation.

Responsibilities & Duties :

• Manage the customer relationship, coordinating interactions and meetings, tracking deliverables, submission and acceptance, and compliance to contracts.

• Own end to end licensing execution efforts required to fulfill an application deliverable, ranging from detailed safety analysis to a physical protection plan.

• Partner closely with internal stakeholders and external regulatory bodies to drive efficient project execution and authorization.

• Oversee execution by technical teams including design reviews and regulatory and quality documentation; organize their inputs into data products and reports; raise regulatory concerns and see through timely and successful resolution.

• Proactively review approaches and decisions as they relate to regulatory efforts to ensure adherence to Radiant's novel and efficient licensing paths.

Required Qualifications & Skills:

• Comfortable working in uncertainty on first-of-a-kind projects.

• Bachelor's degree in engineering (nuclear, mechanical, electrical, computer science, or similar) from an accredited institution.

• 5 years experience in a regulated industry, preferably nuclear programs regulated by the NRC or DOE.

• Experience directly interfacing, interpreting and implementing regulatory requirements, with a focus on streamlining and right-sizing.

• Excellent verbal and written communication and negotiation abilities; ability to navigate regulatory conversations effectively and write technical documentation.

Desired Qualifications & Skills:

• Thorough understanding of the engineering design process in a fast paced or agile hardware development environment.

• Experience in emergency preparedness, fire protection, safety analysis, radiation protection or other related regulatory subjects.

• Strong engineering fundamentals with an ability to understand and translate applicable portions of system design into a license application.

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. Radiant's 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 today's advanced reactor builders don't wait for job postings. They join the winning team. If that's you, contact us directly for immediate opportunities: recruiting@radiantnuclear.com.

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 applicant's capacity to serve in compliance with U.S. export controls.