Mechanical Engineer II

Mechanical Engineer II

Radiant is seeking a highly motivated Mechanical Engineer II to design and develop new hardware systems for the Kaleidos 1MW nuclear microreactor. The ideal candidate takes great ownership of their work end-to-end, is proficient in both design and analysis, and is excited to work in a highly cross-functional, fast-paced environment. You will be a key contributor to building the world's first mass-produced, rapidly-deployable nuclear reactor. 

Responsibilities & Duties  

• Mechanical Engineering ownership of components and subsystems, such as the following:    
  • Reactor core pressure vessel design per Boiler & Pressure Vessel Code (BPVC).
  • Reactor internal components and mechanisms. 
  • Radiation shielding and thermal insulation. 
  • Heat exchangers and other fluid system components. 
  • Transportation and assembly tooling. 
• Conduct trade studies and develop designs to meet program requirements.
• Perform detailed thermal and mechanical analysis (static strength, durability/fatigue) to determine structural integrity (margins of safety) using both hand calculations and finite element tools.
• 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.  

Required Qualifications & Skills  

• Bachelor’s degree from an accredited institution in Mechanical, Materials, Aeronautical, Civil or Structural Engineering.  
• 2+ years of experience conducting trade studies and designing mechanical components or subsystems. 
• 2+ years of experience performing stress analysis (static and fatigue) using both hand calculations and finite element analysis (FEA) tools (Femap/NASTRAN, Abaqus, or similar).  

Desired Qualifications & Skills  

• 2+ years of experience with design of multi-component assemblies in CAD (Solidworks or similar). 
• 2+ years of professional experience designing hardware that was manufactured, deployed, and iteratively improved.  
• Solid understanding and application of GD&T. 
• Track record of appropriate selection of analysis fidelity.
  
• Ability to derive free-body diagram and control volume-based models for systems.
• Experience performing CFD analysis (STAR-CCM+ or similar) for combined fluid/thermal modeling of systems.  
• Self-motivated with strong organizational, written, and oral communication skills.  
• Experience with using text-based software development tools (Python or similar).