Mechanical Engineer I (Nuclear)

Location: On-site in Austin, Texas; candidates must be based in the United States

Company

hirify.global develops factory-fabricated microreactors, including the Aalo-1, to provide affordable, scalable, and reliable nuclear power.

What you will do

• Design mechanical components, mechanisms, and assemblies for advanced reactor technology under the direction of senior engineers.
• Create 3D CAD models, engineering drawings, bills of materials, interface documentation, tooling, fixtures, and inspection plans.
• Integrate actuators, drives, encoders, limit switches, sensors, and instrumentation into mechanical systems in collaboration with controls engineers.
• Perform hand calculations and structural, thermal, and mechanism analyses to size and justify designs.
• Build, instrument, and operate test rigs for mechanisms, seals, and fluid-system components.
• Work with machinists, welders, technicians, vendors, and operations to fabricate, assemble, test, and commission practical hardware.

Requirements

• Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, or a related field.
• 1–3 years of hands-on engineering experience, including industry, internships, co-ops, or equivalent projects.
• Experience designing and building physical hardware and working with mechanical fabrication, assembly, or electromechanical testing.
• Proficiency with 3D CAD platforms such as SolidWorks, NX, Creo, or similar.
• Working knowledge of GD&T, tolerance stack-ups, engineering drawings, basic schematics, and instrumentation wiring.
• Must be a U.S. Citizen or U.S. Person compliant with 10 CFR Part 810 and willing to work on-site in Austin, TX.

Nice to have

• Experience with actuators, motors, gearboxes, encoders, position sensors, linkages, latches, drives, or robotic equipment.
• Experience building custom test rigs, machines, or experimental setups.
• Experience with fluid, gas, or vacuum systems, including valves, seals, plumbing, or hydraulics.
• Familiarity with data acquisition systems, controls, PLC interfaces, welding, machining, or fabrication.
• Hands-on experience in Formula SAE, robotics, rocketry, hardware startups, or machine shops.

Culture & Benefits

• Work on technically challenging nuclear energy systems in a fast-paced environment.
• Emphasis on ownership, practical problem-solving, urgency, and high-quality execution.
• Health, dental, and vision insurance.
• Paid time off.
• Corporate gym membership and opportunities for professional growth.