About the role#
This internship offers an opportunity to bridge engineering, operations, and human factors in a technical and regulated environment. You will work with a multidisciplinary team to translate hardware and software designs into clear, executable procedures that meet DOE and NRC standards. The role requires you to qualify as an operator to gain firsthand experience with real-world execution.
What you'll do#
- Develop and refine operational procedures that integrate software and hardware-in-the-loop testing.
- Ensure Reactor Operators and Senior Reactor Operators can safely execute test, commissioning, and operational activities.
- Improve operator interfaces, procedural workflows, and software tools through close collaboration with engineers.
- Support testing and iterative improvements for digital twin scenarios and human-machine interfaces.
- Maintain strict formatting, clarity, and usability in all procedural documentation to ensure regulatory compliance.
What you'll need#
- Current pursuit of a BS or MS in Mechanical Engineering, Nuclear Engineering, Aerospace Engineering, or a related field.
- Proficiency in managing or optimizing complex hardware and software processes for testing and operations.
- Ability to apply first principles thinking to solve problems in ambiguous situations.
- Hands-on experience with technical procedures, human factors engineering, or operational interface design.
- Proficiency in Python and UNIX for testing in simulator environments.
- Experience with user-centered instructions for operational workflows.
Location & details#
- Location: El Segundo, California.
- Term: Summer 2027.
- Work Modality: On-site.
- Employment: Full-time, paid internship.
- Note: This position involves access to technology subject to U.S. export controls. Offers are contingent upon the applicant's ability to serve in compliance with these controls.
About Radiant
Radiant produces portable nuclear microreactors. The company is based in El Segundo, California and employs between 51 and 200 people. It was founded in 2020. The firm is currently developing a 1 MW failsafe microreactor known as Kaleidos.
How to get in at Radiant
Applying early to Radiant gives you a clear advantage because recruiters review applications as they arrive. Intern Insider sends an instant alert the moment a role is published, so you can apply among the first before the pile grows. You should aim to reach out to the recruiters behind these roles directly to ask about the position or a referral, as this approach often improves response rates. Intern Insider surfaces these specific contacts for you, helping you move past the standard queue.



