Commercial Gas Engineer

Acorn; Croydon; On-site; GBP 50,000 - 61,000; Full time

Benefits offered by this job

25 days annual leave

Salary sacrifice pension

Ongoing training

Wellbeing support

Job summary

Acorn is seeking an experienced Mobile Commercial Boiler Engineer to join our team, delivering servicing, maintenance and repairs across South & SE London. The role is mobile and requires independent work across client sites, maintaining Gas Safe compliance and safety standards.

You will hold CCN1 and CODNCO1, with a Full UK driving licence, and work 41.25 hours per week with overtime opportunities. Competitive salary, 25 days leave, pension, and ongoing training are offered.

Qualifications

• Strong knowledge of commercial boiler and combustion systems.
• Proven Gas Safe compliance experience.
• Good all-round understanding of HVAC and building services environments.
• Sound knowledge of Health & Safety in a mobile engineering role.

Responsibilities

• Carry out commercial boiler and combustion servicing, maintenance, and repairs across multiple client sites.
• Deliver planned preventative maintenance (PPM) and reactive works in line with Gas Safe regulations and company standards.
• Diagnose faults, undertake performance testing, and recommend remedial actions.
• Ensure all works comply with Health & Safety requirements and safe systems of work.
• Complete accurate job reports and certification documentation.
• Liaise with Contracts Managers, the helpdesk, and administrative teams to ensure smooth job delivery.
• Communicate professionally with clients, suppliers, and subcontractors.
• Participate in the out-of-hours emergency call-out rota when required.
• Maintain tools, test equipment, and certification to required standards.

Skills

Gas Safe compliance

Commercial boiler systems

HVAC knowledge

Health & Safety

Education

CCN1

CODNCO1

Full UK driving licence

Job description

At Acorn, people are at the heart of everything we do. With over 40 years’ experience delivering market‑leading engineering and compliance services across London and the South East, we have built a reputation based on trust, technical excellence, and long‑term partnerships with our clients.

We are seeking an experienced Mobile Commercial Boiler Engineer to join our growing management team, delivering high-quality servicing, maintenance, and repair of commercial boiler and combustion systems across South & SE London

This is a mobile role suited to a proactive, technically competent engineer who can work independently, manage their own workload, and represent the business professionally across client sites. You will play a key role in maintaining Gas Safe compliance and ensuring all works meet current legislative and safety standards..

Location: Croydon and the surrounding areas

Salary: up to £55000

Hours: 41.25 per week (Opportunity to work overtime)

Competitive salary with regular reviews

25 days annual leave

Salary sacrifice pension scheme (Scottish Widows), subject to eligibility

Ongoing training and development opportunities

Supportive team environment within a growing organisation

Access to wellbeing support and employee assistance resource

Key Responsibilities

Carry out commercial boiler and combustion servicing, maintenance, and repairs across multiple client sites

Deliver planned preventative maintenance (PPM) and reactive works in line with Gas Safe regulations and company standards

Diagnose faults, undertake performance testing, and recommend remedial actions

Ensure all works comply with Health & Safety requirements and safe systems of work

Complete accurate job reports and certification documentation

Liaise with Contracts Managers, the helpdesk, and administrative teams to ensure smooth job delivery

Communicate professionally with clients, suppliers, and subcontractors

Participate in the out-of-hours emergency call‑out rota when required

Maintain tools, test equipment, and certification to required standards

About You

You will be an experienced commercial boiler engineer who is organised, safety‑conscious, and customer‑focused. You take pride in delivering high standards of workmanship and compliance while working autonomously across multiple sites.

Essential Skills and Experience

Strong working knowledge of commercial boiler and combustion systems

Proven experience working within Gas Safe compliance

Good all‑round understanding of HVAC and building services environments

Sound knowledge of Health & Safety in a mobile engineering role

Qualifications Required

CCN1

CODNCO1

Full UK driving licence

Strong IT skills, including Word, Excel, Outlook, and PowerPoint

Package and Benefits

Competitive salary with regular reviews

25 days annual leave

Salary sacrifice pension scheme (Scottish Widows), subject to eligibility

Ongoing training and development opportunities

Supportive team environment within a growing organisation

Access to wellbeing support and employee assistance resources

We are an Equal Opportunity Employer and do not discriminate against any employee or applicant for employment because of race, colour, sex, age, national origin, religion, sexual orientation, gender identity, status as a veteran, and basis of disability.

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When you apply, we may conduct a background check using public databases and websites and utilising a web search engine. Your CV may be retained for a maximum period of one year.

Need more info?

Our TA Executive Dale will answer your questions.

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