Recruiting Coordinator

Recruiting Coordinator (Contract) role at Radiant System

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 failsafe microreactor that can be transported anywhere power is needed and run for up to five years without the need to refuel. 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 utilizes modern software engineering to rapidly achieve safe, factory-built microreactors that leverage existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor next year at the Idaho National Laboratory, with initial customer deliveries beginning in 2028.

This is a 3-6 month contract-to-hire position. Conversion to FTE will depend on company need, performance, and business priorities.

Radiant is seeking a detail-oriented, organized, and mission-driven Recruiting Coordinator to support our fast-growing team in a high-velocity startup environment. You will be the backbone of the recruiting function—owning the candidate experience while also strengthening recruiting operations and processes that enable us to scale effectively. The ideal candidate thrives on organization, communication, and problem-solving. You’ll partner closely with recruiters, sourcers, and hiring managers to manage interview scheduling, candidate communication, and recruiting systems.

In addition, you’ll contribute to process improvements, data integrity, and reporting that enhance how we hire. This role offers the opportunity to help shape the candidate journey and the operational foundation that supports building the world’s first portable zero-carbon nuclear microreactor.

• Coordinate and schedule interviews across multiple time zones, ensuring a smooth and efficient process.
• Manage candidate communication and serve as the first point of contact, providing a professional, timely, and thoughtful experience that reflects Radiant’s mission and culture.
• Maintain and improve accuracy in our applicant tracking system (ATS), ensuring data integrity, pipeline visibility, and consistent candidate records.
• Partner with recruiters and hiring managers to optimize recruiting workflows, identify bottlenecks, and propose solutions.
• Support the creation and delivery of recruiting dashboards, metrics, and reporting to enable data-driven decision making.
• Assist with documentation of recruiting processes, tools, and best practices to ensure consistency and scalability.
• Help manage logistics for recruiting events, campus recruiting, and networking initiatives.
• Collaborate cross-functionally with HR and Operations teams on offer processes, onboarding handoffs, and compliance needs.

• Bachelor’s degree from an accredited university or 2+ years of professional experience, ideally in recruiting, HR, or operations.
• Strong organizational skills with proven ability to manage competing priorities in a fast-paced environment.
• Excellent communication and interpersonal skills, with a focus on creating a positive candidate experience.
• Comfort with scheduling tools, applicant tracking systems, and spreadsheets/databases.
• High attention to detail and a strong commitment to accuracy and data integrity.

• Experience in recruiting operations, coordination, or HR operations at a high-growth or technical company.
• Ability to anticipate needs, solve problems independently, and adapt quickly to changing priorities.
• Interest in developing a career in recruiting, operations, or talent acquisition.
• Passion for Radiant’s mission and enthusiasm for supporting a team building the future of clean energy.

• Must be willing to work extended hours and weekends as necessary to meet company goals.
• Must work 100% onsite at Radiant’s El Segundo HQ.
• Occasional travel for recruiting and networking events.