Senior Thermal Analyst

Radiant Industries•El Segundo, CA

3d•Onsite

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. About the Role Radiant is seeking a driven Senior Thermal Analyst with expertise in CFD and thermal FEA modeling. You will design, develop and implement simulations for the Kaleidos microreactor to ensure high fidelity, reliability, and safety of our systems. You’ll work on cutting edge technical problems for a high temperature gas reactor that inform decisions across reactor systems, cooling systems, shielding, and more. You will have an opportunity to work in an interdisciplinary environment and drive milestones forward to unlock commercialization of the first mass-produced nuclear reactor.

Requirements

Bachelor’s degree in engineering, physics, or similar field from an accredited institution.
5+ years of relevant industry experience.
5+ years experience with STAR-CCM+, Ansys Fluent, or other commercial CFD code.
Proficiency with CAD software (Siemens NX).
Mastery of finite element and computational fluid dynamics modeling principles and methods.
Experience communicating and distilling information with cross-functional teams.

Nice To Haves

Experience with radiation heat transport modeling.
Knowledge of nuclear reactor design.
Driven, self-motivated, and takes ownership of work end to end.

Responsibilities

Own and execute thermal CFD analysis to evaluate design and performance of Kaleidos reactor systems.
Develop and implement solutions to model turbulent flow, heat transfer, and multi-physics interactions
Identify and implement CFD simulation best practices
Build automated workflows to expand simulation capabilities, accuracy, and efficiencies
Collaborate across teams and disciplines to support design of reduced order analysis methods.

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.