Job Description

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?

We know that a great package is more than just pay. At DMG Delta, you'll benefit from:

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

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 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 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

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 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:

Electrical: 3 years (required)
Licence/Certification:

Driving Licence (required) Electrical qualifications (required)
Work authorisation:

United Kingdom (required)
Work Location: On the road