Senior Thermal Engineer (AI)

TL;DR

Senior Thermal Engineer (AI Infrastructure): Leading thermal design and optimization of AI Factory infrastructure with an accent on liquid cooling architectures and high-density thermal management. Focus on executing large-scale CFD simulations in ANSYS Fluent and developing ML-driven predictive digital twins for operational optimization.

Location: Sydney, Australia

Salary: £180,000 - £200,000

Company

A provider of revolutionary AI Factory infrastructure utilizing state-of-the-art high-performance computing clusters.

What you will do

• Lead thermal design and optimization for AI systems exceeding 100kW per rack density using A100 and A400 GPU clusters.
• Design and validate cutting-edge liquid cooling architectures, including direct-to-chip, immersion, and hybrid solutions.
• Execute large-scale, high-fidelity CFD simulations using ANSYS Fluent.
• Develop predictive thermal models and comprehensive digital twins incorporating ML capabilities for operational optimization.
• Lead experimental validation campaigns and drive sustainable cooling innovation to minimize Power Usage Effectiveness (PUE).
• Provide technical leadership to cross-functional teams across all heat transfer modalities and length scales.

Requirements

• Higher level degree in Mechanical Engineering, Thermal Engineering, or a related field with a focus on heat transfer and fluid dynamics.
• Minimum 8 years of experience in thermal management for data center and high-performance computing (HPC) applications.
• Deep expertise in ANSYS Fluent for executing complex, large-scale CFD simulations.
• Extensive experience with liquid cooling technologies, including cold plates and heat exchangers.
• Proven track record of thermal design for electronic systems with power densities >50W/cm².
• Proficiency in CAD software (SolidWorks, AutoCAD) and programming languages (MATLAB, Python).

Nice to have

• Strong publication record in peer-reviewed journals and conference presentations.
• Experience with multi-physics simulations combining thermal, fluid flow, and structural analysis.