Overview
Post Title: Mobile Building Services Engineer (Commercial Gas Bias). Hours: 8am - 5pm. Contract: Permanent. Location: 99% within M25. Head Office: Bishop's Stortford. Call-out Rota: 1 week in 7. Overtime: Time and a half or double time, plus £150 standby allowance. Reporting to: Operations Manager.
About DMG Delta
DMG Delta is a leading provider of building services, supporting a wide range of commercial and residential sites. We take pride in delivering high-quality, reliable services, and our engineering team is at the heart of this commitment. We are seeking 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.
Why Work With Us?
- 25 days annual leave + 8 bank holidays
- Generous sick pay and accident insurance
- Loyalty bonus after 2 years\' service
- Life assurance (2x salary)
- Private GP access and 24/7 counselling via EAP
- Annual eye care reimbursement
- Reward & recognition schemes (Employee of the Quarter, Manager incentives)
- Training Academy and mentor programme for ongoing development
- Tech Desk support to help you in the field
- Company events
The Role
- Lead on gas and mechanical maintenance, fault resolution, and compliance across commercial client sites.
- Carry out planned preventive maintenance (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 Responsibilities
- 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.
Essential Qualifications
- Commercial Gas qualifications (COCN1, CODNCO1, CIGA1, CORT1, ICPN1, TPCP1A or equivalent)
- NVQ Level 3 in Mechanical Engineering or equivalent
Desirable Qualifications
- Domestic gas (CCN1)
- F-Gas or HVAC awareness
- Electrical qualification (18th Edition or similar)
- IPAF / PASMA
Experience
- 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
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
If you are a qualified, motivated, and flexible commercial gas engineer looking to progress your career in building services, we want to hear from you.
Job Details
- Job Types: Full-time, Permanent
- Pay: £48,000.00-£55,000.00 per year
- Benefits: Company events, Company pension, Employee mentoring programme, Health & wellbeing programme, Life insurance, On-site parking, Referral programme, Sick pay
- Experience: Commercial gas: 3 years (required)
- Licence/Certification: Driving Licence (required), COCN1 Commerical Gas Safety (required)
- Work authorisation: United Kingdom (required)
- Work Location: On the road