Mechanical Commissioning Engineer - Gävle, Sweden (On-site)€80,000 – €90,000 per year + Accommodation + Transport + Rotation 17/4 + €1,300 Net Living Allowance per MonthEU Passport Holders OnlyA leading European contractor is seeking a Mechanical Commissioning Engineer to support delivery of HVAC and mechanical commissioning on a major hyperscale data centre project in Sweden.Key ResponsibilitiesSupport mechanical commissioning planning and programme deliverySupervise installation works prior to testingWitness FATs, SATs and Integrated Systems TestingCommission mechanical plant (Chillers, AHUs, CRAHs)Manage vendors, subcontractors, and site coordinationOversee documentation, snagging, and final handoverEnsure all works meet strict H&S and quality standardsRequirementsDegree in Mechanical Engineering / Building Services or relevant trade background5+ years commissioning experience in mission-critical projectsData centre or pharma experience highly beneficialStrong communication and organisation skills