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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.

We're looking for a Media Relations Director to own Radiant's external media presence—from podcast bookings and journalist relationships to investor amplification and executive communications. This role is critical: despite Radiant having more substance, competitors are seeking to out‑hustle us on new media. You'll be the primary interface between Radiant and the media world, building relationships with podcasters, journalists, and newsletter writers who cover energy, defense, technology, business and more. You'll prep executives for appearances, coordinate amplification campaigns, and ensure every major milestone gets the coverage it deserves.

• Drive media coverage for Radiant targeting top‑tier outlets, podcasts, shows, and newsletters covering defense, technology, business, government, and energy.
• Build and maintain relationships with reporters at those same publications.
• Cultivate relationships with new media outlets, newsletters, and online publications that reach our audiences.
• Coordinate investor amplification during milestone announcements—pre‑briefing investors with draft posts and embargo timing to maximize reach.
• Support executive communications, including developing talking points, preparing executives for interviews, and ensuring spokespeople are deployed to appropriate audiences.
• Monitor media landscape and competitors, the industry and more.
• Manage crisis communications when Radiant or the nuclear industry faces negative coverage.
• Track and report on media metrics, including coverage volume, sentiment, share of voice vs. competitors, and amplification reach.

• 8+ years in media relations, communications, or PR—ideally in technology, energy, aerospace, or defense.
• Demonstrated success booking executives on broadcast and top‑tier podcasts and securing feature coverage from top‑tier publications.
• Existing relationships with journalists, podcasters, or media gatekeepers (or proven ability to build them).
• Experience preparing spokespeople for high‑stakes media appearances.
• Understanding of the new media landscape—podcasts, newsletters, social platforms—and how influence flows through and across these channels.
• Excellent written and verbal communication skills.
• Ability to work across time zones and accommodate media schedules.

• Existing relationships with business, defense, energy, or technology podcasters and media creators.
• Experience with nuclear energy communications and the unique sensitivities involved.
• Prior work with defense technology companies.

• 25+ podcast/media appearances per year across executives.
• 4+ coordinated investor amplification events per year.
• Multiple features per month in high‑reach newsletters and publications.

• Must be willing to work extended hours and weekends as necessary to accomplish our mission.
• Must work 100% onsite at El Segundo HQ.

• 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.

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.

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.