Senior Mechanical Engineer – Nuclear Reactor (Equity)

Valar Atomics; Los Angeles (CA); On-site; USD 140,000 - 180,000; Full time

Benefits offered by this job

Equity ownership

Unlimited PTO

Free daily lunch and dinner onsite

PPE stipend

Career growth opportunities

Direct collaboration with engineers

Job summary

Valar Atomics seeks a Senior Mechanical Engineer for the reactor program. This role will own the design, build, and test of mechanical subsystems within the reactor plant, including the reactor, control rods, and HVAC, driving hardware from concept through to commissioning on the first unit and then scaling to production.

The position is hands-on and hardware-first, requiring rigor to ensure the design basis is met.

Qualifications

• Bachelor’s degree in Mechanical Engineering or related field.
• 5+ years of mechanical engineering on complex hardware.
• Proven track record taking hardware from design through build and test.
• Strong base in stress analysis, thermal design, materials, and pressure vessel and piping codes.
• Proficiency in CAD and engineering drawing standards.

Responsibilities

• Own the mechanical design of assigned subsystems from requirements through design freeze.
• Perform and review stress, thermal, and fluid analyses (FEA and CFD) to validate margins and compliance.
• Develop 3D CAD models, assemblies, and drawings with GD&T and tolerance analysis.
• Present designs at design reviews and drive actions to closure.
• Lead root cause investigations and drive corrective actions on hardware issues.
• Mentor junior engineers and contribute to design standards.

Skills

CAD software

Stress analysis

Thermal design

Materials knowledge

Pressure vessels & piping codes

Education

Bachelor’s degree in Mechanical Engineering

Master’s degree in Mechanical Engineering

Tools

SolidWorks

Creo

NX

Job description

Valar Atomics seeks a Senior Mechanical Engineer for the reactor program. This role will own the design, build, and test of mechanical subsystems within the reactor plant, including the reactor, control rods, and HVAC, driving hardware from concept through to commissioning on the first unit and then scaling to production.

The position is hands-on and hardware-first, requiring rigor to ensure the design basis is met.