Thermal Modeling Engineer (CFD)

TL;DR

Thermal Modeling Engineer (CFD): Designing and implementing thermal and CFD simulations for the Kaleidos microreactor with an accent on high fidelity, reliability, and safety. Focus on developing thermal analysis pipelines, optimizing cooling and shielding systems, and validating lower-fidelity thermal methods.

Location: Must work 100% onsite at El Segundo HQ (CA, USA). Unable to provide visa sponsorship.

Salary: $107.5K – $150K + Equity

Company

hirify.global is a startup building the world’s first mass-produced, portable nuclear microreactors.

What you will do

• Develop and execute thermal analysis and CFD to evaluate the design and performance of Kaleidos systems.
• Document analysis results to communicate clear and actionable outputs.
• Expand CFD capabilities, accuracy, and efficiencies via methods and workflow development projects.
• Own the pipeline for producing analysis geometry from mechanical design CAD.
• Develop methods and calculations to support and build confidence in lower-fidelity thermal analysis methods.

Requirements

• Bachelor’s degree in engineering, physics, or a similar field.
• 3+ years of experience with Star CCM+ or Ansys Fluent.
• Proficiency with Siemens NX CAD software.
• Strong understanding of finite element and computational fluid dynamics modeling principles.
• Must be compliant with U.S. export controls.
• No visa sponsorship available.

Nice to have

• Experience with radiation heat transport modeling.
• Knowledge of nuclear reactor design.

Culture & Benefits

• Comprehensive medical, vision, and dental insurance (100% coverage for employee).
• Substantial incentive stock plan for all full-time employees.
• Daily catered lunch, free snacks, and drinks.
• Flexible PTO policy and remote workday allocation.
• 8 weeks of paid parental leave for all parents.