Senior Thermal Fluids Analyst

The role

The Senior Thermal Fluids Analyst will build and run thermal-fluids models of components and subsystems for the R1 micro-reactor. This role provides technical expertise and iterative design feedback to design engineers and supports testing teams through data review and model validation.

What you will do

• Assess subcomponent designs for pressure drop and heat transfer using hand-calcs, in-house tools, and CFD
• Collaborate with designers on initial sizing, material selection, and design feedback
• Compile detailed documentation of analytical results and communicate to stakeholders
• Provide support to test engineers with test design, instrumentation selection, and data review
• Develop internal tools and calculators for other engineers
• Provide technical mentorship and guidance to other engineers and across teams

Required qualifications

• Bachelor's in Mechanical or Aerospace Engineering or similar technical discipline
• 5+ years' experience performing thermal-fluid analysis
• Experience building and running CFD models using commercial codes such as Fluent, CFX, and Star-CCM+
• Experience using Computer Aided Design (CAD) software for design modification and model defeaturing (Siemens NX or similar)
• Experience in Python, MatLab, VBA, or other scripting language
• Ability to work long hours and weekends as necessary to support critical milestones

Nice to have

• Master's in Mechanical or Aerospace Engineering or similar technical discipline
• Familiarity with 1-D fluid network tools such as Flownex, Sinda-Fluint, or RELAP5
• Participation in regulatory qualification or certification programs for safety-critical systems in the aerospace or nuclear industry
• Understanding and experience of implementing numerical methods to solve fluid-dynamic and thermodynamic systems
• Experience working with multiphase fluid & heat transport systems (Heat Pipes, Rankine Cycle Engines, Saturated Cryogenic Storage)
• Familiar with ASME BPVC Section III Div 5
• Experience building and running Finite Element Analysis (FEA) models
• Comfortable in a fast-paced environment with rapid design iteration loops

Before you apply

• Applicant must be a U.S. citizen or national, U.S. lawful permanent resident, Refugee, or Asylee, or be eligible to obtain required authorizations from the U.S. Department of State

About the company

Antares is building mass-producible, inherently safe, deployable microreactors for terrestrial, underwater, and space use. The team includes members from SpaceX, the White House, the Pentagon, and various national laboratories.