HIU Engineer (Foot-Mobile) London £35,000 to £55,000 DOE + Benefits Permanent | Monday to Friday | 8:00am to 5:00pm We are recruiting an experienced HIU Engineer to join a specialist mechanical and energy services business working across high-rise residential and commercial developments throughout London. This is a foot-mobile position, travelling between sites using the London transport network. No driving licence is required. It is an ideal opportunity for an engineer who prefers city-based work without van driving, while still operating on high-value, technically interesting systems. This role offers long-term stability, structured support, and strong earning potential within a professional and well-organised engineering environment. Role Overview You will be responsible for the servicing, maintenance, and fault-finding of Heat Interface Units across energy centres and plant rooms in residential and commercial buildings. The role combines technical problem solving with client-facing professionalism. Key Responsibilities * Service, maintain, and fault-find HIUs * Work within plant rooms and energy centres * Diagnose system faults and carry out effective repairs * Ensure compliance with safety, performance, and site standards * Communicate clearly with residents, site teams, and clients * Complete service records, job sheets, and reports accurately * Support colleag...