PThe Senior Commissioning Engineer leads and coordinates all commissioning activities for mission-critical data centre power, electrical and mechanical systems in Madrid, ensuring full operational readiness and compliance with client, regulatory and quality standards. This includes developing execution plans, managing test phases (FAT/SAT/IST), resolving commissioning issues, and driving safe energisation and successful handover into operations. /ppbr/ppbResponsibilities: /b /pulliLeading the full commissioning lifecycle of electrical mechanical systems on a large data centre project. /liliDeveloping and executing detailed commissioning scripts, test plans, and procedures through FAT/SAT and integrated systems testing. /liliCoordinating with construction, QA/QC, vendors/contractors and client teams to ensure systems are installed, tested and operating per design. /liliDriving issue resolution, punch lists, reporting and documentation toward successful energisation and handover. /liliEnsuring compliance with quality, safety and operational standards in a mission-critical environment. /liliPlan, witness and manage Factory Acceptance Tests (FAT) with OEMs and suppliers. /liliLead Site Acceptance Testing (SAT) and functional performance testing onsite. /liliDrive Integrated Systems Testing (IST) to validate redundancy, failure scenarios and system resilience. /liliEnsure issues identified during testing are tracked, resolved and re-tested. /li /ulpbr/ppbRequirements: /b /pullibFluency in Spanish is a necessity /b /liliProven track record delivering commissioning on large data centre projects. /liliDeep knowledge of mission-critical systems (MEP electrical) and commissioning documentation. /liliStrong leadership, communication, and coordination skills. /liliComfortable working onsite in Italy with international teams. /lili8+ years commissioning experience in data centres or similar mission-critical facilities. /liliStrong understanding of UPS, switchgear, generators, MV/LV infrastructure and integrated systems testing. /liliAbility to interpret single line diagrams, control philosophies, and technical documentation. /liliExcellent coordination, reporting and stakeholder management skills. /li /ul