Thermo-Mechanical Design Engineer (Nuclear Energy)

Location: Onsite in Torrance, California, United States

Salary: $112,000–$150,000 per year, plus equity

Company

hirify.global is a Series B startup developing mass-producible, inherently safe microreactors for terrestrial, underwater, and space applications.

What you will do

• Design, model, and analyze heat pipe systems and their application interfaces.
• Support prototyping and mass-manufacturing methods for heat pipes.
• Develop test articles, test stands, and procedures to validate heat pipe performance and service life.
• Coordinate with internal teams and external stakeholders to translate customer requirements into delivered hardware.
• Define operating procedures and performance limits for end users.
• Investigate heat pipe failures, establish reliability limits, and integrate corrective actions.

Requirements

• Bachelor’s degree in Mechanical, Aerospace, or Nuclear Engineering, or a related physics-based field.
• At least 2 years of engineering experience focused on thermal or heat transfer systems.
• Experience with thermal modeling software such as COMSOL or ANSYS.
• Ability to work onsite in Torrance, California.
• Must be a U.S. citizen or national, lawful permanent resident, refugee, or asylee, or be eligible to obtain the required U.S. Department of State authorizations under U.S. export regulations.
• Ability to work long hours and weekends when required to support critical milestones.

Nice to have

• Master’s degree in Nuclear Engineering, Thermal Sciences, Mechanical Engineering, or Aerospace Engineering.
• Knowledge of materials science, alloy selection, and high-temperature two-phase flow simulation.
• Experience designing, analyzing, manufacturing, and testing heat pipes, including systems operating above 500°C.
• Experience with sodium purification and material handling.
• Knowledge of nuclear safety standards, testing protocols, and regulatory requirements.

Culture & Benefits

• Work on advanced nuclear energy and microreactor technologies for terrestrial, underwater, and space applications.
• Collaborate in person across engineering, research and development, production, customer, and stakeholder teams.
• Values include systems thinking, end-user focus, unconventional problem-solving, direct engagement with stakeholders, and operating effectively amid uncertainty.
• Equity is included in the compensation package.