2027 New Graduate - Reactor Operations Engineer
About The Position
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 Reactor Operations Engineer to join the team. Responsibilities: Develop and refine operational procedures that integrate both software and hardware-in-the-loop testing. This role offers a rare opportunity to bridge engineering, operations, and human factors in a highly technical and regulated environment. You will collaborate with a multidisciplinary team to translate complex hardware and software designs into clear, executable, and DOE or NRC compliant procedures. Your work will ensure that Reactor Operators (ROs) and Senior Reactor Operators (SROs) can efficiently and safely execute test, commissioning, and operational activities. Collaborate closely with engineers to improve operator interfaces, procedural workflows, and software tools. Gain firsthand experience, ensuring procedures align with real-world execution. Support testing and iterative improvements of digital twin scenarios, operator systems, and human-machine interfaces. Ensure compliance with DOE and NRC standards, maintaining strict formatting, clarity, and usability in procedural documentation.
Requirements
- BS or MS in Mechanical Engineering, Nuclear Engineering, Aerospace Engineering, or a related discipline.
- Graduating in December 2026 or Spring 2027.
- Proficiency in managing or optimizing complex hardware and software processes for testing and operations.
- Ability to apply first principles thinking to solve problems and make decisions in uncertain or ambiguous situations.
Nice To Haves
- Hands-on experience in developing technical procedures, human factors engineering, or operational interface design.
- Proficiency in Python, UNIX, for procedure testing within the simulator environments.
- Experience with human factors and user-centered instructions for operational workflows.
Responsibilities
- Develop and refine operational procedures that integrate both software and hardware-in-the-loop testing.
- Collaborate closely with engineers to improve operator interfaces, procedural workflows, and software tools.
- Gain firsthand experience, ensuring procedures align with real-world execution.
- Support testing and iterative improvements of digital twin scenarios, operator systems, and human-machine interfaces.
- Ensure compliance with DOE and NRC standards, maintaining strict formatting, clarity, and usability in procedural documentation.
Benefits
- Substantial incentive stock plan for all full-time employees.
- 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.
- Sponsored memberships for employees and their dependents.
- 100% top tier plan coverage + 50% for dependents.
- 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.
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What This Job Offers
Job Type
Full-time
Career Level
Entry Level
