Lead Mechanical Engineer / Working Supervisor Corporate Office Building 4 Floors Location: Liverpool street Hours: 40 hours per week Standard shift: 8:00am 5:00pm Flexibility required between 7:00am 7:00pm in line with site activity and wider team Occasional out-of-hours overtime required to support PPMs Security Requirements: Basic DBS required & confidentiality agreement The Role We are recruiting for a mechanically biased Lead Engineer / Working Supervisor to take responsibility for the day-to-day maintenance operations of a 4-floor corporate office building. This is a hands-on leadership role ideal for a strong mechanical engineer ready to step up or an experienced lead engineer who enjoys remaining technically involved while supervising a small on-site team. You will lead from the front, ensuring statutory compliance, high service delivery standards, and smooth coordination of contractors and reactive works. Strong experience with commercial lighting systems and lighting controls is essential, alongside mechanical building services expertise. Experience with BMS systems and Simtronic lighting control systems is highly desirable. Key Responsibilities Technical & Operational Oversee and deliver all Planned Preventative Maintenance (PPMs) Mechanical systems maintenance including: Fan Coil Units (FCUs) TMVs Tap temperature checks POU water heaters Emergency lighting (EML) testing and lighting fault diagnostics First response to reactive works with hands-on fault finding and repair Ensure statutory compliance across all systems Support and interface with BMS and lighting control systems Supervision & Leadership Direct supervision of: 1 x Apprentice (including structured development and training plan) 1 x Fabric Technician Allocate daily workloads and monitor performance Maintain high engineering and housekeeping standards Act as site technical lead and escalation point Contractor & Compliance Management Issue Authorities to Work (ATW) Manage contractor attendance and compliance Oversee specialist subcontractors Ensure all works are completed safely and to standard About You Mechanically biased with strong HVAC/building services background Proven experience in a Lead Engineer or Supervisory capacity Strong knowledge of commercial lighting systems and controls Experience working in corporate/commercial office environments Confident managing contractors and junior engineers Strong fault-finding and problem-solving ability Professional and client-facing