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.

About the role

Were looking for a Social & Content Manager to own Radiants day-to-day content production across social media presentations and visual assets. Youll write and post social content for the company and executives build slides and decks and graphics. This is a high-output hands-on roleyoure not directing from above youre in Canva at 4pm making tomorrows LinkedIn post.

The ideal candidate is a fast-moving content creator who can write punchy social copy design clean visuals and adapt voice across multiple executives. You understand that in a world of AI-generated content authentic voice and visual quality matter more than ever. You also understand that nuclear comes with baggage and you know how to reframe the conversation around what microreactors actually are: small safe portable and fundamentally different from the legacy plants people fear.

Responsibilities & Duties:

Social Media (60%)

• Write and publish social content daily for the Radiant brand account and 3-4 executive accounts.

• Maintain distinct voices for each executive while ensuring brand consistency.

• Monitor engagement respond to comments and keep Radiants presence active and relevant.

• Stay current on platform trends and adapt content accordingly.

Visual Content & Presentations (40%)

• Create slides decks and presentation materials for leadership investors and events.

• Design graphics for social posts announcements company website and internal communications.

• Maintain and evolve Radiants visual brand across all touch points.

• Coordinate timing across the content calendar.

Required Qualifications & Skills:

• 5-7 years of experience in content marketing social media or brand communications.

• Strong portfolio showing range: social posts graphics slides short-form video.

• Proficiency in design tools (Figma Canva Adobe Creative Suite CapCut).

• Excellent writing skillspunchy clear adaptable to different voices.

• Experience managing social accounts for brands or executives.

• Ability to translate complex concepts into accessible content.

• Comfort working fast with multiple competing priorities.

Desired Qualifications & Skills:

• Experience in energy aerospace defense tech or other hard tech sectors.

• Video editing skills (Premiere CapCut or similar).

• Motion graphics capability (After Effects or similar).

• Photography skills for capturing team/facility content.

• Experience with social analytics and reporting.

Key Deliverables:

• Daily social content across brand and executive accounts.

• Presentation materials for leadership and investor meetings.

• Consistent visual brand across all channels.

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.

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 applicants capacity to serve in compliance with U.S. export controls.

Required Experience:

Manager