Senior Mechanical Engineer (Nuclear Energy)

Location: Austin, Texas, United States; on-site

Company

hirify.global is a US technology company developing and deploying next-generation modular nuclear power plants through high-throughput manufacturing, efficient supply chains, and rapid deployment strategies.

What you will do

• Lead the design and execution of critical mechanical systems and components for scalable, manufacturable nuclear power plants.
• Develop concepts, detailed CAD models, complex mechanical assemblies, and rapid prototypes.
• Perform structural, thermal, and fluid analyses using FEA and CFD tools.
• Integrate mechanical, electrical, and control systems into cohesive plant-level solutions.
• Oversee prototype fabrication, assembly, and testing with internal and external partners.
• Develop tooling and manufacturing aids while optimizing designs for cost, scalability, manufacturability, and deployment speed.

Requirements

• Bachelor’s degree in Mechanical Engineering or a related field.
• 4+ years of hands-on mechanical design and analysis experience in high-growth, high-urgency environments.
• Deep proficiency with CAD tools such as SolidWorks, AutoCAD, or equivalent.
• Expertise with FEA and CFD software such as ANSYS, LS-DYNA, Nastran, or similar.
• Strong knowledge of materials science, stress analysis, and thermal and fluid systems.
• Ability to turn concepts into tested prototypes quickly, communicate effectively, and own complex problems end-to-end.

Nice to have

• Advanced degree in Mechanical Engineering or a related field.
• Experience in a startup or advanced manufacturing environment.

Culture & Benefits

• Work directly with the CEO and executive leadership team on critical engineering priorities.
• Hands-on, autonomous work in a fast-paced startup environment.
• Direct influence on product strategy, deployment timelines, and fleet-wide system design.
• Focus on decarbonized, reliable, affordable nuclear energy and scalable clean-energy deployment.