Principal CFD Engineer

About the Company

PhysicsX is a deep-tech company with roots in numerical physics and Formula One, dedicated to accelerating hardware innovation at the speed of software. We are building an AI-driven simulation software stack for engineering and manufacturing across advanced industries like Aerospace & Defense, Materials, Energy, Semiconductors, and Automotive.

Responsibilities

• Lead the technical direction and delivery of complex multi-physics simulation workstreams
• Partner with customers to address complex engineering challenges through advanced CAE & AI solutions
• Build and guide the development of complex multi-physics models from geometry clean-up to post-processing
• Develop robust parametric CAD models coupled with simulation pipeline automation
• Generate high-quality simulation datasets for training Machine/Deep Learning models
• Accelerate high-fidelity modelling using cloud platforms and on-premise HPC resources
• Mentor junior colleagues and contribute to a culture of collaboration
• Travel globally (average 3-4 weeks per quarter) to work on-site with customers

Requirements

• 5+ years of industry experience (post Masters or PhD) in a commercial, non-research environment
• Deep expertise in fluid mechanics, heat transfer, and multiphase modelling
• Proficiency in Star-CCM+, OpenFOAM, or Fluent
• Ability to automate simulation tools for scalable optimisation workflows
• US citizenship required due to aerospace and defense work

Preferred Qualifications

• Experience in parametric CAD modelling (NX or CATIA)
• Coding proficiency in Python or Java
• Experience integrating experimental data for model validation

Benefits

• Equity options
• 5% 401(k) contribution
• Private health insurance
• Enhanced parental leave (3 months paternity, 6 months maternity full pay)
• 20 days annual leave plus public holidays
• Subsidized Gympass / Wellhub
• Flexible Spending Account (FSA)
• Free team lunch once per week