Service & Commissioning Engineer Competitive Salary (DOE) 25 days' annual leave, pension & private healthcare Location: London & South of England (regional projects, with travel outside London as required) Full-time | Permanent The Opportunity We are looking for a skilled Service & Commissioning Engineer to join a growing Building Management Systems (BMS) team. This role combines planned preventative maintenance (PPM), small works commissioning, and reactive call-outs across a range of BMS platforms. You'll work both independently and as part of a wider service team, with opportunities to mentor junior engineers and share technical knowledge. If you're looking for a role where you can take ownership, build strong client relationships, and work on varied projects - this could be the right next step. What You'll Be Doing Carry out PPM, small works commissioning and call-outs on BMS systems Commission and configure systems such as Trend, Tridium, Siemens, Schneider, and ALC (training provided where needed) Produce site reports, commissioning files, O&M documentation, and handover packs Maintain accurate backups, LAN maps, and site records in line with company standards Supervise junior engineers and subcontractors, ensuring safe working practices Support projects from installation through to commissioning and handover Ensure compliance with H&S policies, risk assessments, and method statements Deliver strong client communication and maintain long-term relationships What We're Looking For Essential skills & experience: Proven experience working with at least one major BMS system (Trend, Tridium, Siemens, Schneider, or ALC) Ability to interpret, modify, and commission BMS control strategies Strong understanding of HVAC systems Electrically competent with sound technical problem-solving skills Excellent communication, organisation, and time management skills Ability to work independently and as part of a collaborative service team Desirable: Knowledge of Niagara-based systems Experience leading small projects or supervising junior engineers Commercial awareness within the BMS industry