Mobile Commercial Gas Engineer in London

• Competitive salary based on qualifications and experience

• Overtime at enhanced rates plus standby allowance

• 25 days annual leave plus 8 bank holidays

• Salary protection through sickness and accident cover

• Life assurance (2x annual salary)

Job Title: Mobile Commercial Gas Engineer Location: Central & Greater London (within the M25) Job Type: Permanent Hours: 8:00am - 5:00pm Salary: £48,000 - £55,000 Overtime: Time and a half or double time + £150 standby allowance Call-Out Rota: 1 in 7 weeks Reporting to: Operations Manager

Valoris Group is looking for a skilled Mobile Building Services Engineer with a strong commercial gas bias to join a well-established HVAC and building services provider. This is a key role within the service delivery and operations team, responsible for maintaining, fault-finding, and improving mechanical and gas systems across multiple commercial sites throughout London and the Home Counties.

This mobile position requires flexibility and a proactive approach, including occasional work outside standard hours to support essential services.

• Lead gas and mechanical maintenance, fault diagnosis, and compliance across commercial sites

• Carry out planned preventative maintenance (PPM) and reactive works on boilers, plant rooms, and associated equipment

• Attend multiple sites as directed to meet operational requirements

• Respond promptly and safely to breakdowns and emergency callouts

• Maintain accurate documentation, including service reports and gas safety records

• Provide clear on-site technical updates and recommendations

• Follow and promote all health and safety and gas compliance standards

• Continue developing technical skills and knowledge of new technologies

• Planned, reactive, and statutory maintenance on commercial boilers, heating systems, pumps, valves, and plant equipment

• Fault finding, isolation, and repair of gas and mechanical systems

• Testing, purging, and commissioning in line with Gas Safe regulations

• Support installation works, upgrades, and plant refurbishments

• Complete service and safety certification accurately and on time

• Provide basic multi-skilled support across electrical, HVAC, and plumbing systems where required

• Attend and resolve gas or mechanical emergencies across sites

• Access to a private GP service

• Confidential Employee Assistance Programme (24/7 support)

• Annual eye care reimbursement

• Access to a structured training academy and mentoring support

• Ongoing opportunities to enhance technical skills and qualifications

• Company van and fuel card

• Uniform and safety equipment

• Phone and tablet

• Parking apps and company debit card

• Proven experience in commercial gas maintenance and HVAC plant environments

• Strong fault-finding, repair, and commissioning experience on commercial gas systems

• Experience delivering both PPM and reactive maintenance

• Ability to work independently across multiple sites

• Commercial Gas certifications (COCN1, CODNCO1, CIGA1, CORT1, ICPN1, TPCP1A or equivalent)

• NVQ Level 3 in Mechanical Engineering or equivalent practical experience

• Full UK driving licence

• Right to work in the UK

• Strong diagnostic and problem-solving capability

• Ability to read mechanical drawings and plant schematics

• Good communication and reporting skills

• IT literate and confident using mobile devices and job management systems

• Able to work both independently and as part of a team

• Reliable and committed to high-quality workmanship

• Flexible and adaptable to changing work demands

• Professional and customer-focused approach

• Strong team player with a collaborative mindset

• Physically fit and able to lift equipment

• Comfortable working at height and in confined spaces

• Willing to travel across multiple locations and participate in an on-call rota

• Strong understanding of gas safety regulations and compliance standards

• Commitment to safe working practices

• Proactive in identifying hazards and managing risks