Thermal - Fluids Analyst I

About the role

Antares is developing microreactors for terrestrial and space applications to advance clean energy. You will model thermal-fluids for the R1 reactor core and power conversion systems to guide design iterations and ensure performance in extreme environments.

Key facts

What you'll do

• Evaluate subcomponent designs for heat transfer and pressure drop using CFD, hand calculations, and internal tools.
• Advise engineers on material selection and initial sizing based on analytical data.
• Document and present results, assumptions, and constraints to internal and external stakeholders.
• Partner with test teams to plan instrumentation, review data, and validate models.
• Create internal calculators to help other engineers perform rapid design assessments.
• Provide technical mentorship to team members.

Requirements

• Bachelor degree in Mechanical or Aerospace Engineering or a related field.
• Experience running CFD models using Star-CCM+, Fluent, or CFX, including conjugate heat transfer and compressible equations of state.
• Proficiency in CAD software like Siemens NX for model defeaturing and design changes.
• Scripting skills in Python, VBA, or MatLab for tool development.
• Must meet ITAR requirements as a U.S. citizen, permanent resident, refugee, or asylee.

Nice to have

• Master degree in Mechanical or Aerospace Engineering or a related field.
• 3+ years of professional thermal-fluids analysis experience.
• Familiarity with 1-D fluid network tools such as RELAP5, Sinda-Fluint, or Flownex.
• Experience with multiphase fluid and heat transport systems like heat pipes or Rankine cycle engines.
• Knowledge of ASME BPVC Section III Div 5.
• Experience with FEA modeling.
• Participation in safety-critical regulatory or certification programs.

Skills & tools

• CFD: Fluent, CFX, Star-CCM+
• CAD: Siemens NX
• Scripting: Python, MatLab, VBA
• 1-D Tools: Flownex, Sinda-Fluint, RELAP5 (preferred)

Practical notes

• This role requires the ability to work weekends and long hours to meet project milestones.
• Antares is an Equal Opportunity Employer.