Mechanical Engineer

Full-time Permanent Mid-level Senior

Posted 08 May 2026

Mobile Mechanical Engineer

Salary: Depending on experience £35k - £50k with O.T.E

We’re looking for a proactive Mechanical Maintenance Engineer to handle planned and reactive maintenance across the building, ensuring work is completed safely, on time, and to technical standards. As a Mechanical Engineer, you will manage day‑to‑day tasks, respond to call‑outs, and keep site documentation accurate and up to date. This role suits a hands‑on Mechanical Engineer with strong mechanical fault‑finding skills and the ability to work independently.

You’ll also support small projects and ensure seamless service delivery as a key on‑site Mechanical Engineer.

What We Offer

• Uniform
• Overtime opportunities
• 20 days holiday (increasing) + Bank Holidays

Key Responsibilities

• Reactive & planned maintenance
• Fault finding & ad‑hoc repairs
• Keeping plant rooms, workshops & stores tidy and stocked
• Maintaining logbooks & compliance records
• Liaising with tenants and clients
• Identifying additional repair needs
• Following Health & Safety and completing RAMS

Technical Knowledge

• HIUs (training provided but strong mechanical diagnostics required)
• UFH manifold repairs
• FCU fault finding
• Pumps, boilers, LTHW, chillers, pressurisation units

Keywords

Maintenance Engineer, Reactive Maintenance, Planned Maintenance, HIU, FCU, Pumps, Chillers, Mechanical Engineer, Building Services, PPM, BMS Controls, HVAC, Fault Finding, Pressurisation Units, M&E Engineer, Site Maintenance.

All offers are subject to pre‑employment checks and a DBS check.

If you have not heard from us within 30 days, please assume you have not been successful on this occasion. We encourage you to apply for future opportunities.

Polyteck is a family-owned building services company with over 20 years’ experience across London and the UK. We deliver construction, maintenance and M&E services for commercial, public and residential clients, known for doing things properly, valuing people, and taking pride in the quality of our work.