Radiant Industries is an El Segundo, CA-based startup developing Kaleidos, a portable, containerized nuclear microreactor. Portable nuclear power with rapid deploy capability can replace diesel generators used today to provide critical asset support for hospitals, datacenters, and military bases or to power microgrids at remote sites. Radiant’s unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-constructable microreactors leveraging existing, well-qualified materials. Radiant is on a fast track to demonstrate the first fueled operation of a new commercial nuclear reactor design, just two years from now.

Nuclear Engineer

Radiant is seeking a highly motivated nuclear engineer for an opportunity to work with mentorship and guidance from experienced nuclear professionals in a fast-paced startup environment. The candidate will be responsible for various aspects of nuclear design and analysis as priorities shift and expertise is gained.

Responsibilities & Duties

Ownership of Nuclear design and analysis, examples:
- Shielding: Transport, Operational, Self-Activation and environmental Activation, Waste Categorization, working with both customer and regulatory requirements
- Run coupled neutronics and thermal calculations to refine the thermal model in various scenarios
- Mechanical: Assess damage effects and bulk material properties changes due to high flux on ceramics and metals inside the core
- Neutronics: Develop control schemes and design control systems using transient simulations to finalize source sizing and detector selection
- Fuel and Waste: Model burnup distribution, design burnable absorber, and perform criticality assessments for transport and waste facility compatibility
Develop requirements for hardware systems, structures, and components
- Create and manage a Bill-Of-Materials (BOM).
- Find and develop suppliers for all components.
Own subassembly design, manufacturing, and test schedules. 
Collect requirements, provide expertise and feedback to engineers in other functional areas via clear, constructive communication.

Required Qualifications & Skills

Bachelor’s degree in nuclear engineering or equivalent degree from accredited institution
Proficient in at least one of the following programming languages: Python, C++, C#, or another scientific computing language

Desired Qualifications & Skills

Self-motivated with strong organizational, written, and oral communication skills
Competency in distributed software development process
Hands-on experience designing hardware and/or performing tests
Related experience with OpenMC, Serpent, MCNP, MOOSE, BISON, RELAP, CFD, Pronghorn, GRIFFIN, or other nuclear software packages
At least 1 year of software development experience:
- C, C++, or Python development experience is preferred.
- Prior use of code repositories, unit testing, performance benchmarking, and software review / release processes.
- Familiarity with good documentation practices and implementation of style guidelines.

Employee Benefits for Eligible Employees:

Stock: Substantial incentive stock plan for all full time, salaried employees.
Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.
One Medical: Sponsored memberships for employees and their dependents.
Vision: 100% top tier plan coverage + 50% for dependents.
Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.
Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.
Free snacks and drinks onsite.
Flexible PTO policy.

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.

Unfortunately, we are unable to provide visa sponsorship at this time. 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.

6 month growth

1 year growth

2 year growth