Summer 2027 Internship - Marketing & Communications

Radiant; El Segundo (CA); On-site; USD 22,000 - 42,000; Part time

Job summary

Radiant, an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors, is seeking a Marketing & Communications Intern to join the team for Summer 2027. You will draft social media content for the company brand, create press materials, and develop milestone content for major announcements, while ensuring brand consistency across channels.

This 100% onsite internship at Radiant’s HQ in El Segundo, CA requires pursuing a BS or MS in Marketing,

Qualifications

• Currently pursuing a BS or MS in Marketing, Communications, Branding, or related discipline.
• Experience in content marketing, brand communications, or corporate communications.
• Exceptional writing skills with the ability to adapt voice for different audiences.
• Strong visual sensibility.
• Familiarity with social media best practices across major platforms.
• Ability to work quickly and manage multiple projects with competing deadlines.

Responsibilities

• Draft social media content for Radiant brand account across channels.
• Create press materials including press releases, fact sheets, executive bios, FAQ documents, and backgrounders.
• Develop milestone content packages for major announcements including visual assets, posts for investors, and media talking points.
• Maintain brand consistency across touchpoints—website, social, presentations, events, investor materials.
• Manage external creative vendors (design, renderings, video) to produce high-quality visual assets.

Skills

Writing

Content marketing

Brand communications

Social media familiarity

Project management

Education

BS or MS in Marketing, Communications, Branding

Job description

Summer 2027 Internship - Marketing & Communications

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.

Radiant is seeking a highly motivated Marketing & Communications Internto join the team.

Responsibilities:

• Draft social media content for the Radiant brand account, maintaining consistent presence across channels.

• Create press materials including press releases, fact sheets, executive bios, FAQ documents, and backgrounders.

• Develop milestone content packages for major announcements including visual assets, draft posts for investors, and media talking points.

• Maintain brand consistency across all touchpoints—website, social, presentations, events, investor materials.

• Manage external creative vendors (design, renderings, video) to produce high-quality visual assets.

Qualifications:

• Currently pursuing a BS or MS in Marketing, Communications, Branding, or related discipline.

• Experience in content marketing, brand communications, or corporate communications.

• Exceptional writing skills with the ability to adapt voice for different audiences.

• Strong visual sensibility.

• Familiarity with social media best practices across major platforms.

• Ability to work quickly and manage multiple projects with competing deadlines.

Additional Requirements

• This internship is based 100% onsite at Radiant’s HQ in El Segundo, CA.

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.