Senior Mechanical Engineer, Numenor (Reactor)

The role

This person will own the design, build, and test of mechanical subsystems within the reactor plant. They will take hardware from concept through build, test, and commissioning on the first unit to drive repeatable, scaled production.

What you will do

• Own the mechanical design of assigned subsystems from requirements through design freeze.
• Perform and review stress, thermal, and fluid analyses to validate margins and code compliance.
• Develop 3D CAD models, assemblies, and drawings using GD&T and tolerance analysis.
• Present designs at design reviews and drive actions to closure.
• Take designs to hardware through procurement, vendor management, factory build, and assembly.
• Plan and execute component and integrated testing and support commissioning.
• Design for manufacture and repeatability.
• Work with systems engineering, safety, IC&E, quality, and supply chain.
• Mentor junior engineers and contribute to design standards and configuration management.
• Lead root cause investigations and drive corrective actions on hardware issues.

Required qualifications

• Bachelor’s degree in Mechanical Engineering or a related field.
• 5+ years of mechanical engineering on complex hardware, such as pressure systems, heat transfer equipment, mechanisms, or large structures.
• 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 (SolidWorks, Creo, NX, or similar) and engineering drawing standards.
• Must be legally authorized to work in the United States as a U.S. citizen or lawful permanent resident (green card holder).

Nice to have

• Master’s degree in Mechanical Engineering or a related field.
• Experience with high-temperature, high-pressure systems, such as pressure vessels, heat exchangers, and piping.
• First-of-a-kind hardware experience in aerospace, power generation, oil and gas, or defense.
• Helium or other gas systems, including sealing, leak tightness, and rotating equipment.
• Precision mechanisms and actuators, plus the qualification testing that goes with them.
• Working knowledge of ASME pressure vessel and piping codes (Section VIII, B31.3).
• Design for manufacture and scaling from prototype to series production.
• Nuclear industry experience: commercial, defense, or national laboratory.

Benefits

• Competitive base salary
• Equity ownership
• Comprehensive medical benefits
• Unlimited PTO
• Free daily lunch and dinner provided onsite
• Generous PPE stipend

About the company

Valar Atomics aims to make clean, high-temperature nuclear power scalable. Their first pilot plant will be in Orangeville, Utah.