Mobile Lead Maintenance Engineer London - Multiple sites Overview We are looking for an experienced and proactive Lead Maintenance Engineer to provide technical expertise and support across multiple sites in London. This role is ideal for an electrically biased engineer who enjoys working autonomously, leading maintenance activity, and ensuring the reliability, safety, and performance of critical building systems. You will act as the technical point of escalation for engineering issues, support site teams, and ensure all maintenance is delivered to a high standard. Key Responsibilities Provide technical leadership across multiple sites, supporting engineering teams with fault diagnosis, maintenance planning, and system performance. Lead both planned preventative maintenance (PPM) and reactive maintenance activities across electrical and mechanical systems. Deliver expert fault-finding and root cause analysis on: Low Voltage (LV) electrical systems UPS systems Generators HVAC / air conditioning systems

Use graphical interfaces, alarm data, and technical information to identify and resolve system faults. Monitor building performance using BMS systems, ensuring optimal environmental conditions. Ensure plant faults and defects are addressed promptly to maintain uninte...