Thermal-Mechanical Engineer (Nuclear)

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

Company

hirify.global is a US technology company developing and deploying next-generation micro nuclear power plants based on proven pressurized water reactor technology.

What you will do

• Lead the conceptual design, analysis, and execution of thermal-mechanical components and systems for an advanced nuclear power plant.
• Design heat exchangers, piping networks, fluid storage tanks, pressure vessels, and primary-loop equipment.
• Perform thermal stress, fatigue, thermal expansion, and structural analyses under pressure, temperature, and cyclic loading.
• Translate thermal performance requirements into manufacturable and deployable hardware from concept through design verification.
• Collaborate with structural, analysis, and multidisciplinary engineering teams on plant-level integration and design validation.
• Support material selection, tolerancing, and design-for-manufacturing decisions for high-temperature and high-pressure components.

Requirements

• BS or MS in Mechanical Engineering or a related field.
• 7+ years of hands-on industry experience designing components under thermal and mechanical loading.
• Experience designing thermal-system components for power plants, nuclear systems, or complex industrial systems.
• Proficiency with 3D CAD tools such as Autodesk Inventor, SolidWorks, Siemens NX, or PTC Creo.
• Proficiency with analysis tools such as ANSYS Mechanical, Abaqus, or SolidWorks Simulation.
• Working knowledge of heat transfer, thermodynamics, fatigue, fracture, thermal expansion, and pressure-boundary design.

Nice to have

• Experience with pressure-vessel or piping design codes, including ASME BPVC Section III/VIII or B31.1/B31.3.

Culture & Benefits

• On-site work in Austin, Texas.
• Autonomous project ownership from concept through design verification.
• Hands-on, practical approach focused on manufacturable and deployable designs.
• Collaborative, cross-functional startup environment emphasizing speed, ingenuity, and accountability.