BIM Engineer/Senior BIM Engineer/ Principal BIM Engineer in Sheffield

The Principal Thermofluids Engineer is responsible for the design, analysis and optimisation of advanced liquid-cooling solutions for high-performance IT equipment, including CPUs, GPUs, FPGAs, ASICs, DIMMs, storage and networking hardware. The role ensures Iceotope’s systems deliver best-in-class thermal performance, energy efficiency and reliability, while enabling circularity and energy reuse in data centre and edge applications.

Key Responsibilities:

• Own the end-to-end thermal and fluid design of novel liquid-cooling solutions for high-power IT hardware, from concept through to validation and deployment.
• Specify and select internal components (heatsinks, cold plates, heat exchangers, pumps, valves, manifolds and hydraulic circuits) to achieve target temperatures, flow distribution and pressure drops.
• Define and recommend external system components (CDUs, chillers, dry coolers, strainers, heat rejection units) so that Iceotope equipment receives coolant at the correct temperature, pressure, flow rate and quality.
• Perform CFD and 1D system simulations (e.g. for immersion tanks, cold plates, manifolds and facility loops), including model setup, solution strategies, post-processing and correlation with test data.
• Provide technical leadership on fluid mechanics, heat transfer and liquid-cooling technologies, acting as the go-to subject matter expert for engineering, product and customer-facing teams.
• Work closely with Mechanical, Electronics, Systems and Manufacturing Engineering to integrate liquid-cooling solutions into product designs, balancing performance, cost, manufacturability and serviceability.
• Define test plans and support lab and field validation of thermal and hydraulic performance; Prepare high-quality technical documentation, design reports, specifications and customer-facing materials that clearly communicate system performance and design intent.
• Act as a technical point of contact in customer and partner engagements, including data centre operators, hyperscalers, OEMs and technology partners.
• Mentor and coach junior engineers in thermofluids, CFD methods, design processes and good engineering practices.

Qualifications:

• Degree (or equivalent) in Mechanical Engineering or a closely related discipline, with Fluid Mechanics and Thermodynamics as core components; a higher degree or PhD in a relevant area is advantageous.
• Extensive industrial experience (10+ years) working on heat transfer and fluid-flow calculations, ideally in electronics, data centre, power, automotive, aerospace or similar high-performance applications.
• Deep understanding of convective and conductive heat transfer, boiling and phase-change behaviour, and the key parameters that drive thermal performance across different materials and geometries.
• Hands-on experience with commercial CFD tools (3D and/or 1D) for thermal and flow simulations.
• Track record of working effectively in multi-disciplinary engineering teams, concise communication and a collaborative approach.
• Experience in electronics cooling, high-density compute, data centres or telecoms infrastructure, particularly with immersion, cold-plate or direct-to-chip liquid-cooling technologies.
• Proficiency with mechanical CAD (e.g. SolidWorks) for communicating and reviewing designs with the wider engineering team and suppliers.
• Familiarity with dielectric fluids, two-phase cooling, or other advanced cooling technologies used in next-generation IT and power electronics.
• Exposure to controls, monitoring and diagnostics for cooling systems (e.g. sensors, flow/pressure/temperature monitoring, alarms and control logic).

At Iceotope, you’ll be part of a forward-thinking team that is transforming the landscape of data center cooling.