About the Role Our client is seeking an experienced Mobile Combustion Engineer to cover the Greater London and Home Counties region. This is an excellent opportunity to join a growing organisation that places strong emphasis on technical excellence, safety, and long-term career development. The role involves delivering high-quality maintenance and repair services across a commercial gas contract portfolio, ensuring full compliance with statutory regulations, contractual requirements, and service standards. Key Responsibilities Maintenance & Service Delivery Carry out maintenance of boilers, combustion systems, and associated building services equipment across assigned sites. Complete Planned Preventative Maintenance (PPM) and reactive works as allocated by the Helpdesk. Deliver services in line with agreed Service Level Agreements (SLAs) and planned/reactive maintenance schedules. Perform first-line fault diagnosis and plan remedial works as required. Identify spare parts requirements and notify the Helpdesk accordingly. Accurately complete and submit all planned and reactive maintenance documentation within required timescales.Compliance & Quality Ensure full compliance with Commercial Gas procedures and ISO 9001, ISO 14001, and OHSAS 18001 standards. Carry out all regulatory and contractual activities in accordance with the company’s Quality Management System (QMS). Adhere to best practice standards for planned, reactive, an...