Principal CFD Engineer — AI-Driven Multiphysics & On-site

PhysicsX; Singapore; On-site; SGD 180,000 - 240,000; Full time

Job summary

PhysicsX is building its Singapore presence from the ground up, seeking a Principal CFD Engineer (Delivery) to lead high-fidelity simulations and work directly with customers to define engineering challenges and deliver practical CAE/AI solutions.

You will combine deep fluid mechanics expertise with automation of CFD workflows and multi-physics modelling across industries, traveling to client sites up to 2–3 weeks per quarter and mentoring junior engineers as the team grows.

Qualifications

• 5–7 years of industry experience in a commercial environment.
• Deep expertise in fluid mechanics, heat transfer and multiphase modelling.
• Proficiency with Star-CCM+, OpenFOAM or Fluent; scripting in Python/Java.
• Experience with parametric CAD modelling (NX or CATIA) and automation of CAE workflows.

Responsibilities

• Independently build complex multi-physics models from geometry clean-up and meshing, to simulating and post-processing complex real-world phenomena, integrating experimental data for model validation.
• Build robust parametric CAD models (NX or CATIA) coupled with simulation pipeline automation, for performing advanced design optimization and DoE studies.
• Partner with customers to address their most complex engineering challenges through CAE & AI solutions; present results clearly and recommend actionable next steps.
• Generate high-quality simulation datasets for training ML/DL models; apply data sampling to capture design space efficiently and reduce cost.
• Accelerate high-fidelity modelling using Flux and on-premise HPC resources to achieve performance gains.
• Continuously improve engineering practices and adapt CFD setups for DL surrogates.
• Mentor junior engineers and contribute to a culture of collaboration and growth.
• Travel globally (North America, Europe, Asia, Oceania) up to 2–3 weeks per quarter to work on-site with customers.

Skills

Fluid mechanics

Heat transfer

Multiphase modelling

CFD simulations

Python

Java

Automation of CFD workflows

Education

Masters or PhD in Mechanical Engineering or related field

Tools

Star-CCM+

OpenFOAM

Fluent

NX

CATIA

Python

Java

Job description

PhysicsX is building its Singapore presence from the ground up, seeking a Principal CFD Engineer (Delivery) to lead high-fidelity simulations and work directly with customers to define engineering challenges and deliver practical CAE/AI solutions.

You will combine deep fluid mechanics expertise with automation of CFD workflows and multi-physics modelling across industries, traveling to client sites up to 2–3 weeks per quarter and mentoring junior engineers as the team grows.