Commissioning Lead (Mechanical) – Liquid Cooled Data CentresSilent Aire – DublinWhat you will doWe are seeking a Senior Mechanical Commissioning Engineer to own and lead the commissioning strategy for liquid‑cooled mechanical systems within next‑generation data centre deployments. This role sits within a central commissioning function, responsible for developing commissioning methodology, authoring procedures, and ensuring consistent, high‑quality execution across regional site teams.The successful candidate will be a recognised technical authority in liquid cooling and mission‑critical mechanical systems, with the credibility and experience to govern commissioning activity from design review through IST, client demonstration, and handover.How you will do itCommissioning Strategy & Technical LeadershipDevelop and own the mechanical commissioning strategy for liquid‑cooled data centre productsDefine commissioning philosophy, test levels (L1–L5), hold points, and acceptance criteriaProvide design-for-commissioning input during early design and product development phasesAct as final technical authority for mechanical commissioning issues and risk resolutionSystems ScopeDirect‑to‑Chip (DTC) liquid cooling systemsCoolant Distribution Units (CDUs)Facility and secondary heat rejection systems (dry coolers, chillers, plate heat exchangers)Pumps, valves, pipework, filtration, water treatmentLeak detection and containment systemsIntegration with IT thermal loads and controlsProcedure & Documentation DevelopmentAuthor and maintain:Mechanical commissioning plansPre‑commissioning and flushing proceduresPressure testing and leak testing scriptsThermal performance and load validation test scriptsDefine measurable pass/fail criteria for all mechanical systemsSite & Regional Team OversightProvide governance and technical oversight to regional mechanical commissioning teamsAudit commissioning execution for compliance with strategy and standardsWitness Factory Acceptance Tests (FAT), Site Acceptance Tests (SAT), and critical onsite testsSupport regional teams with complex fault finding and system tuningIntegrated Testing & HandoverCollaborate with electrical and controls leads during:Integrated Systems Testing (IST)Failure‑mode and redundancy testingSupport client demonstrations and formal handoverEnsure readiness for live IT load introductionWhat we look for10+ years’ experience in mechanical commissioning of mission‑critical facilitiesDemonstrable experience commissioning liquid‑cooled data centre systems.Strong working knowledge of:Hydronic system design and commissioningControls and BMS / PLC interactionRedundancy and failure‑mode analysisExperience working across multiple geographies with regional teamsRelevant engineering qualification (Mechanical Engineering or equivalent)Calm and authoritative under pressureStrong technical documentation skillsPragmatic, outcome‑focused approach to commissioningWillingness to travel to support FATs and critical site activitiesAble to challenge unsafe or non‑compliant commissioning practices#AVRIL#LI-Onsite