SiteCore Recruitment is currently seeking an experienced Electrical Commissioning Engineer for an immediate contract start on a major data centre infrastructure development in the Greater London area. As our Commissioning Engineer, you will be at the heart of project delivery, ensuring systems and technical processes are integrated seamlessly, thoroughly tested, and safely operated to the highest standards before project takeover. Key Responsibilities: Lead the electrical testing and commissioning phases of critical data centre infrastructure packages. Verify, inspect, and sign off on high-voltage (HV) and low-voltage (LV) electrical distributions. Coordinate and supervise on-site testing activities, including Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT), alongside dry and wet commissioning. Maintain rigorous safety standards, compliance tracking, and adherence to operational readiness metrics on a fast-paced live site. Support the upkeep of critical systems, including plant equipment, switchgear, and Building Management Systems (BMS). Requirements: Proven track record within critical environments, data centre infrastructure, or heavy MEICA projects. Valid JIB/ECS Gold Card in an appropriate electrical discipline. Relevant electrical testing and verification qualifications (City and Guilds 2391 or equivalent). Full PPE, own calibrated testing tools, and a structured approach to plant commissioning. Full UK driving licence. To Apply: Please submit ..... full job details .....