Thermal Hydraulics Engineer

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Annual Bonus and Stock options

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Company Description

Hadron Energy specializes in Micro Modular Reactor (MMR) development, design, and research based in the San Francisco Bay Area. As the leading MMR developer, Hadron Energy is building factory-produced, transportable microreactors that provide 24/7 carbon-free power for data centers, government facilities, industrial sites, and remote communities. Our mission is to create a brighter, healthier, and more equitable energy future.

Thermal-Hydraulics Engineer – Role Description

This is a full-time on-site role for a Thermal-Hydraulics Engineer
, based in the San Francisco Bay Area. The position is ideal for candidates with extensive expertise in fluid dynamics, heat transfer, and energy conversion systems who are passionate about designing and analyzing the next generation of safe, high-performance nuclear reactors.

You will work closely with our cross-functional team—including reactor physics, mechanical, and safety analysis engineers—to lead the thermal design and fluid system analysis for Hadron’s micro modular reactor. This role is central to modeling and verifying the reactor's heat transport systems, core cooling mechanisms, and balance-of-plant operations under both steady-state and transient conditions.

Qualifications & Skills ets

• Bachelor's, Master's, or PhD in Nuclear Engineering
  , Mechanical Engineering
  , or a related field
• 5+ years of experience in thermal-hydraulics analysis and fluid system design
  , preferably for nuclear or advanced energy systems
• Proficiency in thermal-hydraulic system codes (e.g.,
  RELAP
  , TRACE
  , SAM
  ) or Computational Fluid Dynamics (
  CFD
  ) software (e.g.,
  ANSYS Fluent
  , STAR-CCM+)
• Strong understanding of heat transfer (conduction, convection, radiation),
  fluid mechanics
  , and two-phase flow
• Experience in component design and sizing for heat exchangers, pumps, and valves
• Knowledge of reactor safety analysis and transient analysis (e.g., Loss of Flow, Loss of Coolant)
• Familiarity with balance-of-plant (BOP) engineering and power conversion cycles
• Experience with verification and validation (V&V) of thermal-hydraulic models
• Strong analytical, communication, and teamwork skills
• Passion for clean energy and a startup-minded approach to problem-solving

• Mid-Senior level

• Full-time

• Engineering and Design

• Utilities, Energy Technology, and Manufacturing

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