Structural & Thermal Analyst, Turbomachinery at Radiant

El Segundo, California, United States -

Full Time

Start Date

Immediate

Expiry Date

18 May, 26

Salary

172725.0

Posted On

17 Feb, 26

Experience

2 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Structural Analysis, Thermal Analysis, Turbomachinery, Finite Element Analysis, ANSYS, Abaqus, Rotor Dynamics, Fatigue Analysis, Durability Analysis, Heat Transfer, Stress Analysis, Mechanical Design, Testing, API Standards, ASME Standards, ISO Standards

Industry

Nuclear Electric Power Generation

Description

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 failsafe microreactor that can be transported anywhere power is needed and run for up to five years without the need to refuel. 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 utilizes modern software engineering to rapidly achieve safe, factory-built microreactors that leverage existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor next year at the Idaho National Laboratory, with initial customer deliveries beginning in 2028. We’re looking for a Structural & Thermal Analyst, Turbomachinery to take ownership of the structural, thermal, and mechanical performance of high-speed rotating machinery, including compressors, turbines, and pumps in our power generation and primary cooling systems. You’ll work hand-in-hand with mechanical designers, build engineers, and test teams to ensure hardware performs as expected under extreme mechanical and thermal loads. You’ll contribute to trade studies, iterative design, prototype builds, simulations, and testing, making a tangible impact on Radiant’s mission. Responsibilities Perform structural and thermal analyses of turbomachinery components and assemblies (i.e. compressors, turbines, rotors, electric motors, bearings, seals, and housings) to guide design decisions and ensure reliability under operational and transient conditions Evaluate static and dynamic mechanical performance, thermal stresses, and coupled thermal-structural effects Conduct fatigue, durability, and rotor-bearing performance analyses for high-speed rotating systems Support analysis of airflow, heat transfer, and temperature distributions within turbomachinery components as part of thermal and structural evaluation Troubleshoot and investigate complex interactions between mechanical, thermal, and rotor system behavior Collaborate with mechanical design, build, and test teams to optimize component designs, assembly processes, and thermal management strategies Support prototype and first-article testing, including test article integration, instrumentation setup, data collection, and analysis Document technical results, communicate findings, and provide actionable guidance to cross-functional teams Required Skills and Qualifications B.S. in Mechanical, Aerospace, or Structural Engineering, or a related STEM field 3–5 years of relevant experience performing structural, thermal, or turbomachinery analysis Strong foundation in classical mechanics, stress analysis, and heat transfer principles Hands-on experience with finite element analysis (ANSYS, Abaqus, or equivalent) for structural and thermal simulations Familiarity with airflow, temperature distributions, and coupled thermal-structural evaluations within rotating machinery Strong problem-solving, communication, and documentation skills Desired Skills and Qualifications M.S. in Mechanical, Aerospace, or Structural Engineering Experience with rotor dynamics, critical speed assessment, and vibration/stability evaluations Hands-on experience with high-temperature materials, thermal stress, and high-speed bearing design Prior experience in energy, power generation, or regulated industries (nuclear, aerospace) Knowledge of industry standards (API, ASME, ISO) Prior hands-on experience with assembly, rotor stacking, or prototype hardware is a plus Additional Requirements Must be willing to work extended hours and weekends as necessary to accomplish program objectives Must work 100% onsite at Radiant’s El Segundo headquarters This is an exempt salaried role. Annual Salary Range $124,500—$172,725 USD Total Compensation and Benefits Radiant compensates people for impact and invests in those who continue to raise the bar. Radiant’s new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant. The best of today’s advanced reactor builders don’t wait for job postings. They join the winning team. If that’s you, contact us directly for immediate opportunities: recruiting@radiantnuclear.com. Benefits and Perks for Eligible Employees: Stock: Substantial incentive stock plan for all full-time employees. Medical: 100% premium coverage for base Silver level plan for employee + 50% premium coverage for dependents. Platinum plans available. One Medical: Sponsored memberships for eligible employees and their dependents. Vision: 100% premium coverage for top tier plan + 50% for dependents. Dental: 100% premium coverage for top tier plan (including orthodontia) + 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. Burgeoning satellite offices in Oak Ridge, TN and Washington, D.C., near Capitol Hill. 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.

Responsibilities

The analyst will perform structural and thermal analyses on turbomachinery components like compressors, turbines, and rotors to guide design decisions and ensure reliability under various operational conditions. This includes evaluating mechanical performance, thermal stresses, and supporting airflow/heat transfer analysis within these rotating systems.