Senior Mechanical Engineer, Fluid Systems (Nuclear)

Radiant; El Segundo, Northern (CA, KY); Hybrid; USD 150,000 - 210,000; Full time

Benefits offered by this job

Stock: substantial equity grants

Medical: comprehensive health benefits

One Medical membership

Vision: top-tier coverage

Job summary

Radiant, based in El Segundo, CA, seeks a Senior Mechanical Engineer to own critical Kaleidos fluid systems from design through build and production. You will lead trade studies, component selection, thermal hydraulic analysis, piping design, vendor selection, assembly, and testing.

You will drive subsystem risk analyses, BOM management, supplier development, and cross-functional collaboration to deliver the first new commercial reactor design in decades by 2026.

Qualifications

• Bachelor’s degree from an accredited institution in Mechanical, Materials, Aeronautical, Civil or Structural Engineering.
• Experience with fluid system architecture design.
• 4+ years of experience in designing, building, and testing fluids systems.
• Proficient knowledge in fluid dynamics and thermodynamics.
• Proficient knowledge of heat exchanger design and analysis methods.

Responsibilities

• Own end-to-end engineering of fluid systems and components, including compressors, valves, and heat exchangers.
• Perform complex thermal and fluids analysis to drive design decisions, verify system performance, and ensure structural integrity using first-principle hand calculations and finite element tools.
• Perform trade studies to optimize system and meet program requirements.
• Develop and execute manufacturing/assembly instructions and test plans.
• Create and manage a Bill-Of-Materials (BOM).
• Find and develop suppliers for all components.
• Own subassembly design, manufacturing, and test schedules.
• Own risk analysis (FMEA) for subsystems.
• Collect requirements, provide expertise and feedback to engineers in other functional areas via clear, constructive communication.

Skills

Fluid system design

Fluid dynamics

Thermodynamics

Heat exchanger design

Piping design

FMEA

Vendor selection

Education

Bachelor’s degree in Mechanical/related engineering

Tools

Matlab

Python

FEA tools

Job description

Radiant, based in El Segundo, CA, seeks a Senior Mechanical Engineer to own critical Kaleidos fluid systems from design through build and production. You will lead trade studies, component selection, thermal hydraulic analysis, piping design, vendor selection, assembly, and testing.

You will drive subsystem risk analyses, BOM management, supplier development, and cross-functional collaboration to deliver the first new commercial reactor design in decades by 2026.