Mechanical Maintenance Engineer

As specialist Facilities Management recruiters, we are delighted to be supporting a highly prestigious London-based organisation in the appointment of a Mechanical Maintenance Engineer on a temporary basis.

This is an excellent opportunity to join a large, complex and operationally busy site where engineering standards, compliance and service delivery are paramount. The role offers real responsibility, autonomy and the chance to play a key part within a professional and well‑established facilities team.

Reporting directly to the Chief Engineer, you will take ownership of mechanical maintenance and water hygiene compliance across the site. This is a hands‑on position with leadership responsibilities, including supervising engineers and managing subcontractors when required. You will play a key role in ensuring statutory compliance, plant reliability and operational continuity within a live operational environment.

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• Deliver planned and reactive mechanical maintenance across HVAC systems, plant rooms, pumps, valves and water systems.
  
• Act as Responsible Person for Water Hygiene, managing Legionella risk assessments and remedial actions.
  
• Oversee weekly flushing regimes, temperature monitoring and compliance documentation.
  
• Conduct daily plant inspections and BMS checks.
  
• Raise and manage permits for high‑risk works (hot works, confined spaces, working at height).
  
• Supervise subcontractors including inductions and safety briefings.
  
• Support facilities requirements during live operations.
  
• Assist with compliance activities including emergency lighting, fire alarms, RCD testing and statutory inspections.
  
• Contribute to quarterly, six‑monthly and annual PPM programmes including boiler servicing, HVAC inspections, gas safety checks, pressure testing and documentation reviews.
  
• Participation in an emergency on‑call rota is required.
  

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• Level 3 NVQ/Diploma in Mechanical Engineering (or recognised apprenticeship).
  
• IOSH Working or Managing Safely.
  
• Legionella / Water Hygiene certification.
  
• Several years of hands‑on mechanical maintenance experience.
  
• Experience leading engineers and managing contractors.
  
• Strong working knowledge of statutory compliance and SFG20 standards.
  
• Experience using CAFM systems.
  
• Excellent communication skills and a proactive approach.
  
• Desirable qualifications include NEBOSH, Gas Safe, F‑Gas, CSCS, LOLER/PUWER awareness and experience within complex or live operational environments.