Senior Fluid Systems Engineer
Radiant Nuclear
El Segundo, United States Posted October 17, 2026
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Salary Range
$158,000 - $219,450
Job Description
Join Radiant, a pioneering company in the nuclear energy sector. As a Senior Fluid Systems Engineer, you will be responsible for the end-to-end engineering of critical fluid systems, including thermal hydraulic analysis, piping design, vendor selection, assembly, and testing. You will have a significant impact on the development of the first new commercial reactor design in over 50 years. This position requires a bachelor's degree in engineering, 5+ years of experience in fluid systems design, and a willingness to work onsite in El Segundo, CA.
- Assumer la responsabilité de l'ingénierie de bout en bout des systèmes fluides et des composants, y compris les compresseurs, les vannes et les échangeurs de chaleur.
- Effectuer des analyses thermiques et fluides complexes pour orienter les décisions de conception, vérifier les performances du système et garantir l'intégrité structurelle.
- Développer et exécuter des instructions de fabrication/assemblage et des plans de test, et gérer un Bill-Of-Materials (BOM).
- Bachelor’s degree from an accredited institution in Mechanical, Materials, Aeronautical, Civil or Structural Engineering
- Experience with fluid system architecture design
- Proficient knowledge of heat exchanger design and analysis methods
- 5+ years of experience in designing, building, and testing fluids systems
- Proficient knowledge in fluid dynamics and thermodynamics
- Must be willing to work extended hours and weekends as necessary to accomplish our mission
- Must work 100% onsite at El Segundo HQ
- Prior experience with fluid system modeling via Matlab/Python
- Takes extreme ownership of work and a high degree of responsibility
- Experienced in design for manufacturability and ramping up hardware build in a production environment
- Experience with process piping design and testing codes, such as ASME B31.3 and ASME PCC-2
- Prior experience with designing piping system for thermal growth using hand calculations and FEA tools
- Knowledge of thermodynamic power cycles
- Experienced in designing and operating test stands
- Prior nuclear experience in not required for this role
- Excellent communication across multidisciplinary teams
Required Skills
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