DMG Delta – London
DMG Delta Ltd has been delivering trusted HVAC services for over 30 years. We’re proud to work with a prestigious range of clients across London and the Home Counties. Our head office is near Stansted Airport, but most of your work will be within the M25 and Central London.
Are you looking for a rewarding career with a well-established company that truly values its engineers? At DMG, we’re passionate about supporting our team and providing opportunities to grow.
We’re hiring a Mobile Building Services Engineer (Commercial Gas Bias) to join our growing team. This is a key role within our service delivery and operations team, responsible for maintaining and improving mechanical and gas systems across client sites.
About the Role:
If you’re passionate about delivering top-notch service and want to join a supportive and forward-thinking team, we’d love to hear from you!
As a Mobile Building Services Engineer, you will:
- Lead on gas and mechanical maintenance, fault resolution, and compliance across commercial client sites.
- Carry out PPMs and reactive works on boilers, plant rooms, and associated systems
- Attend multiple sites as directed by the Service Desk to meet operational needs
- Support wider building services, including basic electrical, plumbing, or HVAC tasks as required
- Respond to breakdowns and emergencies promptly and safely
- Maintain accurate documentation, including gas safety records and service reports
- Provide professional client updates and technical advice on site
- Follow and champion all health and safety practices and gas safety regulations
- Continuously develop your skills and keep up to date with new technologies and standards
This is a mobile role requiring flexibility, including potential work outside standard hours to ensure essential services remain operational.
Key tasks include:
- Planned, reactive, and statutory maintenance on commercial boilers, heating systems, pumps, valves, and associated plant
- Fault diagnosis, isolation, and repair of gas and mechanical issues
- Testing, purging, and commissioning in line with Gas Safe requirements
- Support installation works, upgrades, and plant refurbishments
- Complete all service and safety certification accurately
- Assist with multi-skilled support when required (electrical, HVAC, plumbing)
- Attend and resolve mechanical or gas emergencies promptly
- Salary: £48,000 – £55,000
- Hours: 8am – 5pm
- Job Type: Permanent
- Location: Central & Greater London (within the M25)
- Overtime: Time and a half or double time, plus £150 standby allowance
- Call-Out Rota: 1 in 7 weeks
- Head Office: Bishop’s Stortford
- Reporting to: Operations Manager
Benefits:
Our People are the driving force behind our success, which is why we offer an industry-leading package designed to support your career and personal well-being, including:
-
- Competitive Salary based on qualifications and experience
- Overtime Rate: Time and a half or double time, plus a £150 standby allowance
- Generous Annual Leave: 25 days plus 8 bank holidays
- Sickness and Accident Protection: Generous salary insurance protection
- Life Assurance: 2x your annual salary
- Health & Wellness:
- Access to a private GP service
- Confidential Employee Assistance Programme (24/7/365 support)
- Annual eye care reimbursement
- Reward & Recognition: Employee of the Quarter and Manager’s Incentive Scheme
- Training & Development:
- Access to our Training Academy and Mentor Initiative
- Opportunities to enhance your technical skills
- Fully Equipped:
- Company van, uniform, safety equipment, phone, tablet, fuel card, parking apps, and a company debit card
About You:
We’re looking for someone who has:
- Proven experience in commercial gas maintenance and HVAC plant operations
- Competence in fault finding, repair, and commissioning of commercial gas systems
- Experience with both planned maintenance and reactive callouts
- Desirable: mobile role experience, multi-discipline building services background
Essential Qualifications:
- Commercial Gas qualifications (COCN1, CODNCO1, CIGA1, CORT1, ICPN1, TPCP1A or equivalent)
- NVQ Level 3 in Mechanical Engineering or equivalent experience
- Full UK driving licence
- Eligibility to work in the UK
Desirable Qualifications:
- Domestic gas (CCN1)
- F-Gas or HVAC awareness
- Electrical qualification (18th Edition or similar)
- IPAF / PASMA
Skills & Abilities:
- Strong diagnostic and problem-solving skills
- Ability to read mechanical drawings and plant schematics
- Clear communication and reporting skills
- IT literate for mobile devices and job management software
- Ability to work independently and collaboratively
Personal Attributes:
- Reliable, committed to high-quality workmanship
- Adaptable and flexible
- Strong customer focus and professional approach
- Team player with a collaborative mindset
Physical Requirements:
- Physically fit for lifting, working at height, and confined spaces
- Willingness to travel across multiple sites and participate in on-call rota
Health & Safety:
- Strong awareness of gas safety and compliance standards
- Commitment to safe working practices
- Proactive in hazard identification and risk management
To Apply:
- You must be living and authorised to work in the UK to apply for this position.
- Commute to office