Senior Mechanical Engineer

Bridging the gap between Tech & Data and Life Sciences - UK, USA & Europe Overview Ref: 114442 Senior / Lead / Principal Mechanical Engineer / remote with travel – 80/20 split Incredible opportunity to join a rapidly scaling company as a senior/lead/principal Mechanical Engineer to own the cooling systems design for next-generation AI/HPC data centres. You will define the Mechanical Standard, lead high-efficiency air and liquid-cooled system design, and ensure integration with electrical, structural, and architectural systems. Responsibilities Owning the Mechanical Basis of Design (BOD) for AI/HPC campuses Designing and specifying air‑cooled chillers, CDUs, liquid‑to‑chip cooling, and hydronic loops Performing CFD airflow modelling, hydraulic calculations, and equipment de‑rating for extreme heat conditions Reviewing EPCM mechanical submittals, P&IDs, control sequences, and CFD models Conducting field validation: equipment placement, piping/duct routing, clearance, and QC Qualifying long‑lead mechanical equipment (chillers, pumps, CDUs, buffer tanks) Leading Integrated Systems Testing (IST) and handoff to Operations with SOPs Person Specification Bachelor’s in Engineering, Construction Management, or related technical field 5+ years in mechanical systems for data centres, industrial, or mission‑critical facilities Expertise in cooling systems, HVAC, hydronics, air‑and‑liquid‑cooled chillers, DX/refrigerant cycles Experience with CFD (6Sigma, TileFlow) and hydraulic modelling Understanding of BMS control strategies, equipment sequencing, and thermal performance validation Ability to review and manage EPCM engineering packages Next Steps Apply by contacting Ciaran Ahern, View email address on click.appcast.io FPSG is committed to equal opportunities regardless of gender, race, disability, sexual orientation, religion or belief and age. Seniority level Director Employment type Full‑time Job function Data Infrastructure and Analytics #J-18808-Ljbffr FPSG