Thermal Hydraulics Engineer
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.