MPI are looking for a Permanent Commercial Gas Engineer, for our client based in London Salary: £45k - £55k depending on experience Reporting to: PPM Contracts Manager Start Date: Immediate Working Hours: Mon – Fri, 8am – 5pm Job Location: Site-based – Various (Greater London) This is a mobile role requiring flexibility, including potential work outside standard hours to ensure essential services remain operational. Role overview and responsibilities * Lead on gas and mechanical maintenance, fault resolution, and compliance across commercial client sites. * Carry out PPMs and reactive works on boilers, plant rooms, commercial Kitchens and associated systems. * Attend multiple sites as directed by the Mechanical Maintenance 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. * 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 * Commercial Gas qualifications (COCN1, CODNCO1, CIGA1, CORT1, ICPN1, TPCP1A or equivalent) * Commercial Gas catering qualifications (CODC1, COMCAT1, COMCAT2, COMCAT3, COMCAT). * Domestic Gas qualifications (CCN1, CENWAT, CKR1 HTR1) * Full UK driving license * 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 * Ability to read mechanical drawings and plant schematics Desired * F-Gas or HVAC awareness * Electrical qualification (18th Edition or similar) * IPAF / PASMA * Part G3 Unvented Hot Water * mobile role experience, multi-discipline building services background