NES Fircroft
Senior Mechanical Engineer (Data Centre)
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Role: Senior Mechanical Engineer (must have right to Work in UK)
Project: Major UK data centre programme involving modifications to existing facilities to support AI workloads.
Salary: Competitive hourly rate
Engagement: Contract
Work Pattern: Hybrid role (three days in office)
Location: London, UK
Start Date: ASAP
Responsibilities
- Lead mechanical engineering activities for facility upgrades designed to support AI compute loads.
- Develop and optimise liquid cooling systems to manage increased thermal output from high‑density racks.
- Assess existing mechanical infrastructure and define upgrade paths for chilled water systems, heat rejection equipment, and distribution networks.
- Produce and review mechanical calculations, specifications, drawings, and technical documentation.
- Coordinate with electrical, HVAC, BMS, fire safety and architectural teams to ensure seamless integration of upgraded systems.
- Support commissioning, testing and performance validation of new cooling solutions.
- Act as a subject‑matter expert throughout the project lifecycle, advising on mechanical resilience and efficiency.
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Requirements
- Degree in Mechanical Engineering or Building Services Engineering.
- Strong experience with high‑density cooling in mission‑critical environments, ideally data centres.
- Background in retrofit or upgrade projects involving chilled water, liquid cooling, or advanced thermal management.
- Ability to collaborate across multiple technical disciplines and manage interfaces.
- Experience producing and reviewing technical documentation and leading mechanical packages independently.
- Strong communication skills and confidence in client‑facing environments.
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