86 Best site reliability engineer Jobs in London (July 2025)

F-Gas Certified Engineer (Subcontractor)

£2000–£6000 monthly

About Us: We are a growing air conditioning installation and service business serving residential and commercial clients across London. We pride ourselves on delivering high-quality installs and excellent customer service. As we expand, we are seeking experienced F-Gas certified engineers to join us on a subcontractor basis. Role Overview: You will be responsible for the installation, servicing, and maintenance of air conditioning systems (primarily split and multi-split units). You will represent the company at customer sites, ensuring all work is carried out to the highest standards and in full compliance with health & safety regulations. Responsibilities: Installation of new AC systems (primarily split and multi-split) at domestic and commercial sites Fault-finding, diagnosis, and repair of AC units Routine servicing and maintenance Ensuring all works comply with F-Gas regulations Completing job reports and documentation Providing excellent customer service and upholding company reputation Liaising with office team for job scheduling and updates Adhering to all relevant health & safety guidelines on-site Requirements: Valid F-Gas certification (Category 1 preferred) Proven experience installing and servicing AC systems Own tools and transport (van preferred) Public liability insurance UTR number (for subcontractor payment) Strong communication and problem-solving skills Professional, reliable, and customer-focused What We Offer: Competitive per-installation rates (£200–£600 per install, depending on job size) Regular pipeline of work (especially during peak season) Flexible schedule—accept jobs that fit your availability Prompt payment Support from our office team

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6 Bullbanks Road

Plumber and Heating & Ventilation Installer

About Us SANDHU A1 CONSTRUCTION LTD is an established and ambitious construction company based in Belvedere, England. With a strong commitment to quality workmanship and client satisfaction, we are laying the foundation for a solid presence in the UK's construction sector. As we expand, we are seeking a reliable and organised Office Manager to take charge of our administrative operations and help us grow efficiently. About the Role: We are seeking a qualified and experienced Plumber and Heating & Ventilation Installer to join our growing team. The successful candidate will be responsible for the installation, maintenance, and repair of plumbing and heating systems across a range of commercial and domestic properties. This role plays a key part in delivering essential services for both new-build and renovation projects under long-term client contracts. Key Responsibilities: • Install and maintain plumbing, heating, and ventilation systems • Conduct fault-finding and repair work on boilers, pipework, and radiators • Work to technical drawings and specifications • Ensure all work complies with relevant safety and building regulations • Liaise with site managers and clients where required • Maintain a clean and professional working environment Requirements: • Minimum NVQ Level 2 (or equivalent international qualification) in Plumbing/Mechanical Engineering • Proven experience in plumbing and HVAC installation • Gas Safe certification (preferred but not essential) • Strong understanding of UK building regulations • Valid UK driving licence (or willing to obtain one) • Ability to work independently and as part of a team • Good communication and problem-solving skills

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