Structural & Thermal Analyst, Turbomachinery

Radiant is an El Segundo CA-based startup building the worlds first mass-produced portable nuclear microreactors. The companys 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. Radiants 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.

Werelooking for aStructural & Thermal Analyst Turbomachineryto 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.

Youllworkhand-in-handwith mechanical designers build engineers and test teams to ensure hardware performs as expected under extreme mechanical and thermal to trade studies iterative design prototype builds simulations and testing making a tangible impact onRadiantsmission.

Responsibilities

• Perform structural and thermal analyses of turbomachinery components and assemblies( 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 tooptimizecomponentdesigns 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 andprovideactionable guidance to cross-functional teams

Required Skills and Qualifications

• B.S. in Mechanical Aerospace or Structural Engineering or a related STEM field
• 35 years of relevant experience performing structural thermal or turbomachinery analysis
• Strong foundationin 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 toaccomplishprogram objectives
• Must work 100% onsite atRadiantsEl Segundo headquarters

Total Compensation and Benefits
Radiant compensates people for impact and invests in those who continue to raise the bar. Radiants 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 todays advanced reactor builders dont wait for job postings. They join the winning team. If thats you contact us directly for immediate opportunities: .

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 applicants capacity to serve in compliance with U.S. export controls.