Mechanical Maintenance Engineer

BGIS; Greater London; On-site; GBP 42,000 - 56,000; Full time

Job summary

BGIS is seeking a Mechanical-bias Maintenance Engineer (plumber/plumbing preferred) for our Central London site at Trafalgar Square. You will maintain M&E systems, monitor the BMS, and carry out Planned Preventative Maintenance (PPM) and reactive work to ensure reliable building operation.

The role requires hands-on technical knowledge, problem-solving skills, and the ability to work with subcontractors and client representatives, with a focus on safety and accurate record-keeping in systems

Qualifications

• Formal training in mechanical systems (City & Guilds or NVQ).
• Strong knowledge of heating, ventilation and air conditioning systems.
• Experience maintaining pumps, valves and pipework.
• Ability to diagnose faults in chillers, boilers and AHUs.
• Familiarity with Building Management Systems (BMS) and safety permits.

Responsibilities

• Monitor and manage the BMS to maintain internal conditions.
• Lead investigations into environmental conditions and faults.
• Carry out PPM and reactive maintenance on M&E plant.
• Diagnose issues with air conditioning, generators, LV systems.
• Ensure health and safety procedures and permits to work.
• Maintain maintenance records (e.g., Maximo) promptly.
• Supervise subcontractors and BGIS-standards compliance.
• Keep plant rooms secure, clean and organized.
• Support continuous improvement initiatives.

Skills

HVAC knowledge

Plumbing maintenance

BMS monitoring

Pumps and valves

Chillers and boilers

AHUs and ventilation

Health and safety

Maintenance records

Education

City & Guilds / NVQ in mechanical systems

Tools

Maximo CMMS

Microsoft Excel

Job description

Mechanical-bias Maintenance Engineer (plumber/plumbing preferred)

Location: Trafalgar Square, Central London

SUMMARY

We are seeking a skilled and proactive Building Services Engineer to join our team at BGIS. In this role, you will be responsible for maintaining optimal office environmental conditions and ensuring the smooth operation of all mechanical and electrical (M&E) systems. You will monitor and manage the Building Management System (BMS), respond to reactive maintenance requests, and carry out planned preventative maintenance (PPM) to keep our facilities running efficiently. This is a hands-on position that requires strong technical knowledge, problem-solving abilities, and the ability to work collaboratively with colleagues, subcontractors, and client representatives.

KEY DUTIES AND RESPONSIBILITIES

• Monitor and manage the BMS to maintain acceptable internal conditions.
• Lead investigations into environmental conditions, system failures, and faults.
• Carry out PPM and reactive maintenance on M&E plant and equipment.
• Diagnose and resolve issues with air conditioning, UPS, generators, and LV systems.
• Ensure compliance with health and safety procedures, including permits to work.
• Maintain accurate records in the maintenance system (e.g., Maximo) and complete all required documentation promptly.
• Supervise subcontractors and ensure all work meets BGIS standards.
• Keep plant rooms secure, clean, and well-organized.
• Support continuous improvement initiatives and proactively identify areas for enhancement.

KNOWLEDGE AND SKILLS

• Formal training in mechanical systems (City & Guilds or NVQ equivalent), ideally with a focus on HVAC or plumbing.
• Strong understanding of heating, ventilation, and air conditioning systems and associated controls.
• Experience in maintaining and repairing pumps, valves, pipework, and other plumbing components.
• Ability to diagnose and resolve faults in mechanical plant, including chillers, boilers, and air handling units.
• Familiarity with Building Management Systems (BMS) for monitoring and troubleshooting environmental conditions.
• Good knowledge of health and safety practices, including permits to work and risk assessments.
• Excellent communication skills and basic IT proficiency for updating maintenance records.

At BGIS we believe that diversity and inclusion is a key business driver, such that we never lose sight of its importance as it is woven into the fabric of our organisation. We are committed to maintaining a barrier-free recruitment process by providing equal employment opportunities through recruiting and retention of individuals of all backgrounds. We recognize that promoting diversity is an essential component of our continuing pursuit for organisational success! #BGISUK