Radiant
Senior Mechanical Engineer, Fluid Systems
$158K–$219K
El Segundo, CA · On-site · Senior · Full-time · Posted May 20, 2026
- Experience
- 5+ years designing, building, and testing fluid systems.
- Education
- Bachelor’s degree from an accredited institution in Mechanical, Materials, Aeronautical, Civil, or Structural Engineering.
About the job
Own fluid-system engineering for Radiant’s Kaleidos microreactor, from preliminary design through build and production, including analysis, component selection, supplier coordination, assembly, and testing.
What you'll do
- Design and manage fluid systems and components, including compressors, valves, and heat exchangers; perform thermal-fluid analysis and trade studies.
- Develop manufacturing and assembly instructions, test plans, bills of materials, and supplier relationships; oversee subassembly schedules and testing.
- Conduct subsystem risk analysis (FMEA) and coordinate requirements and feedback across engineering teams.
What they ask for
- Bachelor’s degree in Mechanical, Materials, Aeronautical, Civil, or Structural Engineering from an accredited institution.
- Experience with fluid system architecture design.
- 5+ years of experience designing, building, and testing fluid systems.
- Proficient knowledge of fluid dynamics, thermodynamics, and heat exchanger design and analysis methods.
Nice to have
- Professional Engineer (PE) Mechanical license.
- Experience with thermodynamic power cycles, piping design and testing codes, fluid-system modeling via Matlab/Python, production hardware builds, or test stands.
Pay
$158,000 – $219,450 USD base salary
Tools
finite element tools, FEA, Matlab, Python, ASME B31.3, ASME PCC-2
Model-written summary · the original posting is authoritative