Commercial Plant Senior Engineer

Senior Engineer (Commercial Plant Rooms)

Salary: £42,750 – £50,000 base (depending on experience) + Discretionary Performance Bonus + Company Vehicle (with private use permitted)

Location: London & South UK (Field-based across operational heat networks)

Full-time, Permanent | 40-hour working week | On-call rota required (typically 1 in
4)

Due to hiring timescales, sponsorship is not available for this opportunity

Are you an experienced Commercial Plant Engineer looking to advance your technical expertise at the forefront of low-carbon district energy schemes within a rapidly expanding industry leader?

A Leading Specialist in low-carbon district energy networks is expanding its operations and seeking a highly skilled Senior Engineer (Commercial Plant Rooms) to cover London and the South of the UK. This is a pivotal role offering the chance to deliver planned maintenance, project works, and critical plant repairs across large-scale energy centres exceeding 1MW, directly supporting multi-million-pound urban decarbonisation developments.

You will play a vital role in delivering operation and maintenance services to optimise reliability and network efficiency across a growing fleet of heat networks. Your day‑to‑day remit involves:

• Completing planned preventative maintenance (PPM) schedules across pumps, actuators, plate heat exchangers, pressurisation units, and degassers.
• Carrying out fault‑finding, mechanical diagnostics, and repairs to commercial plant rooms and associated pipework.
• Attending reactive site call‑outs to diagnose root causes of operational failure and safely reinstate heat services.
• Managing site‑based project installations and scopes of work for commercial plant remediation while maintaining robust online maintenance records.

• Base salary of £42,750 – £50,000 + discretionary bonus + fully equipped company vehicle with private mileage allowance.
• 25 days annual leave plus statutory bank holidays (with option to buy/sell up to 5 days) + comprehensive company pension scheme.
• Private healthcare provision, health & well‑being support, cycle to work scheme, and electric car lease scheme.
• Dedicated continuing learning and development programmes with structured pathways to progress technical certifications.
• Full company tooling and tech pack provided: company laptop, tablet, and mobile phone.

To be successful, you must demonstrate high‑level technical proficiency:

• Mandatory: NVQ Level 2–3 in Gas or Plumbing; willingness to hold or work towards a valid Commercial Gas certificate.
• Compliance/Systems: Strong understanding of safe mechanical and electrical isolation; ability to interpret P&IDs, technical drawings, and mechanical schematics; basic electrical competency.
• Experience: Minimum of 3 years' experience operating within commercial plant rooms or energy centres in excess of 1MW; background servicing pumps, valves, strainers, and pressurisation units (district heating network exposure advantageous).
• Mobility: Full UK driving licence held valid for a minimum of 12 months.

Take the next step in your Energy & Building Services career with a market leader that prioritises clear communication, technical excellence, and the continuous development of its people

Commercial Plant Senior Engineer
• London, South East, UK