Plumber and Pipefitter - Cooling Systems and Piping Installation £50,000 - £55,000 + Benefits Permanent Full-time, site-based Hertfordshire with UK and European travel We''re looking for an experienced Plumber and Pipefitter or Mechanical Engineer to join a delivery team installing, testing and commissioning cooling systems and piping infrastructure in hyperscale and AI data centres. This is a hands-on, site-based role working from engineering drawings and specifications to deliver critical cooling infrastructure to the highest standards of safety, quality and workmanship. You''ll be based out of Hertfordshire and work across project sites in the UK, Portugal, Germany, the Netherlands (Amsterdam) and Norway as projects require. Flights and accommodation are paid, plus a daily allowance of approximately £50. What You''ll Be Doing Installing and assembling piping networks for data centre cooling systems to project specifications and drawings Fabricating and installing structural supports for pipework Supporting the installation and commissioning of Coolant Distribution Units (CDUs) and rear-door heat exchangers Interpreting technical drawings, blueprints and specifications to plan installations Pressure testing and inspecting installed systems, and finding and fixing leaks and defects Assisting with flushing, cleaning and chemical dosing of cooling loops Supporting commissioning and client handover, completing test records and documentation accurately Working alongside ..... full job details .....