2027 New Graduate - Software Engineer

About Radiant

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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.

Radiant is seeking a highly motivated Software Engineer to join the team.

Responsibilities

• Assist in creating tooling to support a variety of simulation software packages.
• Contribute to internal software products that support simulation and analysis of simulation results.

Qualifications

• BS or MS in Software Engineering, Controls Systems Engineering, or a related discipline.
• Graduating in December 2026 or Spring 2027.
• Familiarity with Python, C++, C#, or similar object-oriented programming languages.
• Basic knowledge of software development practices and version control tools such as Git.

Desired Qualifications

• Strong self-motivation and the ability to collaborate effectively in a team environment.
• Interest in contributing to simulation tools or working on software testing.
• Familiarity with distributed software development and common design patterns is a plus.
• A passion for physics, hardware, or electrical engineering is highly encouraged.

Benefits and Perks

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* Stock: Substantial incentive stock plan