Engineer – Building Services Salary: Up to £48,000 paid overtime & callout Location: Liverpool Street, London (with occasional paid travel to Chelmsford) Pareto FM has an opportunity for an experienced Building Services Engineer to join our on-site team at a premium commercial office environment, working with a high-end insurer in the heart of the City. This is a hands-on role, ideal for an engineer who enjoys taking responsibility for their work, supporting the wider team, and playing a key part in keeping a busy, high-profile site running safely and efficiently. What you’ll be doing day to day You’ll be part of a small on-site engineering team, carrying out a mix of planned and reactive maintenance, with responsibility for ensuring building systems remain compliant, operational and well maintained. Key activities include: Carrying out PPM and reactive maintenance across M&E and building services systems Fault-finding and resolving issues across HVAC plant including AHUs, FCUs, VAVs, pumps and motors Monitoring and responding to BMS alarms, UPS systems and critical plant Completing statutory inspections and ensuring compliance tasks are carried out and recorded Updating CAFM systems accurately with works completed and follow-on actions Supporting and coordinating subcontractors on site when required, including permits to work Acting professionally as a day-to-day point of contact on site, working closely with the client and wider Pareto FM team While this is not a management role, you’ll be trusted to take ownership of tasks, support colleagues when needed, and demonstrate leadership through professionalism, reliability and technical competence. Where you’ll work & the environment Predominantly based Liverpool Street area in London Occasional, paid travel to a satellite building in Chelmsford A fast-paced, high-quality commercial office environment Working directly with a prestigious, high-end insurer A lively site where no two days are the same and standards are high Working hours, overtime & callout 40 hours per week, Monday to Friday Alternating shift pattern: Early shift: 07:00 – 16:00 Late shift: 09:00 – 18:00 Plenty of paid overtime available, including evenings and weekends Optional on-call rota, currently 1 in 3 £100 standby payment per on-call period Minimum 4 hours paid per callout, at overtime rates Team & support Part of a close-knit on-site engineering team Supported by a site-based Technical Manager and wider contract support Weekly team meetings and regular face-to-face communication A collaborative “one-team” culture where engineers support each other Essential experience & skills Experience working within a Building Services / Facilities Management environment Strong background in PPM and reactive maintenance Confident fault-finding across mechanical and electrical systems Experience with HVAC plant, BMS monitoring, emergency lighting and compliance checks Comfortable using CAFM systems and IT tools Calm under pressure, flexible in approach and professional when dealing with clients Qualifications Trade background in electrical or mechanical engineering Trained to City & Guilds or equivalent standard City & Guilds 2330 (Electrical) Level 2 & 3 or City & Guilds 6035 Level 3 (Plumbing/Mechanical) or equivalent Legionella L8 awareness (or willingness to be trained) Why engineers choose this role A single, high-profile site rather than constant multi-site travel A supportive team and strong on-site management Interesting, varied work in a premium environment Paid overtime and clear callout structure Subsidised food allowance plus unlimited tea and coffee on site Training and development opportunities with progression available within Pareto FM If you’re a hands-on Building Services Engineer who takes pride in their work, enjoys being trusted on site, and wants to be part of a professional, well-run contract — we’d love to hear from you.