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Job Title: Technical Engineering ManagerLocation Middlesex / Greater London Salary: 75,000 - 80,000Package availability Car AllowanceBonus Up to 20%Private HealthcarePensionHoliday 25 days plus bank holidayJob oversight A leading provider of mission-critical engineering and maintenance services is seeking a Technical Manager to oversee operations at a data centre facility based in Middlesex / Greater London This is a site-based role responsible for the delivery of both operational and commercial aspects of a high-availability environment. The successful candidate will have strong leadership experience within critical environments, ideally with a data centre or mission Critical EnvironmentResponsibilitiesOwn the day-to-day operational and commercial delivery of the site-based contract.Ensure the continuous operation of critical building services and systems.Act as the Senior Authorised Person for HV systems.Lead root cause analysis and post-incident reviews for technical faults.Deliver scenario-based drills and technical training for engineering staff.Act as the key client interface, maintaining strong relationships and ensuring satisfaction.Ensure planned maintenance is delivered to a high standard and meets all SLA and compliance requirements.Plan and oversee system shutdowns and major project work.Manage all reactive repairs, ensuring swift, safe, and effective resolution.Oversee subcontractor performance, including pricing, auditing, and compliance.Work closely with the permit manager to maintain rigorous permit-to-work controls.Maintain stock of essential spares and materials.Ensure accurate and complete maintenance records are kept.Support the Account Manager with statutory compliance and Quality Management System documentation.Ensure preparation of risk assessments and method statements for all works.Supervise subcontractors and ensure adherence to site safety and operational procedures.Promote and ensure a safe and healthy working environment in line with company and site-specific policies.RequirementsElectrically qualified with a strong background in M&E engineering.Demonstrable experience managing operational contracts within critical environments (data centre experience strongly preferred).Proven ability to lead site teams, manage subcontractors, and deliver service excellence.Comfortable acting as the client-facing lead for all technical matters.Experience with high-voltage systems and permit-to-work processes.Strong understanding of statutory compliance and risk management in critical infrastructure.Excellent interpersonal and leadership skills.Must live within a commutable distance to North Essex / Hertfordshire area (this is a fully site-based role).