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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Need more info?
Our TA Executive Dale will answer your questions.
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