Thermal Hydraulics Engineer

Astraea

Astraea

Other Engineering

United States

Posted on Apr 22, 2026

A Piper Maddox client is seeking a highly motivated Nuclear Engineer with deep expertise in thermal hydraulics and fuel performance to support advanced fuel design and analysis activities. This is a unique opportunity to work on cutting-edge reactor technologies and collaborate with leading experts in the field.

Key Responsibilities:

  • Perform multiphase computational fluid dynamics (CFD) analysis of fuel bundles across CHF, dryout, and post-dryout conditions
  • Conduct thermal analysis of fuel bundles and channels under steady-state and transient operating scenarios
  • Support safety, licensing, and design validation efforts through advanced simulation and analysis
  • Collaborate closely with internal teams & external stakeholders on fuel design and development initiatives

Key Qualifications & Background:

  • MSc or PhD in Nuclear Engineering, Mechanical Engineering, or a related discipline
  • Strong background in nuclear quality assurance, reactor safety, and licensing
  • Proven experience in thermal-hydraulic analysis, including multiphase heat transfer in 3D environments
  • Hands-on experience with industry-standard codes such as RELAP and CATHENA
  • Expertise in nuclear fuel performance, particularly high burnup behavior
  • Familiarity with US NRC tools and regulatory frameworks
  • Proficiency in scripting and automation

If you read this description and feel like this is the role for you please don't hesitate to reach out.