Commissioning Manager

Mitie Group plc.; Greater London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading facilities management company is seeking a Commissioning Manager to oversee the commissioning of various life safety and data infrastructure systems across multiple sites in the UK. This role requires a minimum of 5 years' experience in commissioning, strong leadership skills, and an ability to manage engineering teams effectively. Candidates should be proficient with commissioning tools and have a background in compliance with applicable standards. This is a site-based role with extensive travel involved.

Qualifications

• Minimum 5+ years senior commissioning experience on large commercial or Data Centre projects.
• Strong leadership and planning skills.
• Experience managing multi-discipline commissioning teams.

Responsibilities

• Oversee the commissioning of various systems across multiple sites.
• Develop detailed commissioning plans and schedules.
• Lead and mentor commissioning engineers on site.

Skills

Project Management

Team Leadership

Attention to Detail

Communication Skills

Problem Solving

Organizational Skills

Education

CSCS Card and SMSTS training

Tools

Commissioning tools and software

Job description

Job Title: Commissioning Manager
Based from: Various sites across the UK
Region covered: UK Wide
Reports to: Contracts Manager

Role Overview

The Commissioning Manager will oversee the commissioning of Life Safety, Fire Detection, Fire Suppression, Sprinkler, Security, and Data Infrastructure systems within large‑scale Industrial, Commercial, Residential and Data Centre environments. The role provides technical leadership, challenges design information, manages multi‑discipline commissioning teams, and ensures all systems are integrated, validated and handed over in accordance with all relevant standards, legislation, project‑specific guidelines and client timelines.

Responsibilities

Planning & Coordination

• Develop detailed commissioning plans, programmes, procedures and schedules for ELV systems (Life Safety, CCTV, Access Control, Intercom, etc).
• Review design drawings, specifications and scope documents to identify commissioning requirements.
• Coordinate with design teams, project managers, subcontractors and vendors to ensure readiness for commissioning.
• Conduct commissioning meetings and prepare progress reports for management and clients.
• Review resource requirements and skill sets for each project/system and ensure they are in place as per the commissioning plan/programme.
• Plan across multiple projects to keep commissioning plans/resources aligned and prevent one project from overrunning another.
• Coordinate and manage integration workshops between life‑safety systems, security systems, sprinklers, fire suppression and data systems.

Commissioning Execution

• Lead and supervise commissioning engineers on site in conjunction with the project site team.
• Carry out weekly checks with commissioning engineers to ensure programme adherence and monitor progress/resource issues.
• Oversee programming, system configuration and integration between multiple ELV systems (e.g., linking fire alarm with access control or BMS).
• Ensure all issues identified during testing are logged, rectified and re‑verified before system handover.
• Implement and manage commissioning gateways, punch list management and closure.

Quality Assurance & Compliance

• Verify compliance with Specifications, BAFE, BS, EN, and GBEC Policies and procedures.
• Support standardisation of commissioning processes across multiple sites.
• Coordinate third‑party testing, inspections and approvals with relevant agencies or consultants.
• Maintain QA/QC documentation, including checklists, test reports and witness sheets.
• Ensure commissioning activities follow safety and quality management procedures.
• Review and validate commissioning scripts, method statements and integrated test plans.

Documentation & Handover

• Prepare and maintain complete commissioning documentation, including test sheets, commissioning logs and defect reports.
• Manage and support the preparation of as‑built drawings, O&M manuals and training sessions for client representatives.
• Oversee final acceptance testing (FAT), site acceptance testing (SAT) and system handover to the client.
• Ensure all commissioning evidence is captured through approved digital platforms (e.g., Dalux, BIM360, Cx software, ATP).

Leadership & Team Management

• Lead, mentor and train commissioning teams and engineers.
• Drive project close‑outs and communicate risks early, escalating blockers and resolving issues to protect milestones.
• Support end‑user training and handover of fully validated systems.
• Coordinate with other trades (mechanical, electrical, BMS, lifts, etc.) for smooth integration.
• Provide technical support and troubleshooting throughout project execution.

Working Conditions

• Primarily site‑based role with travel between multiple project locations.
• May involve extended working hours to meet project deadlines.
• Must comply with all site safety and company policies.

Person Specification

• Minimum 5+ years senior commissioning experience on large commercial or Data Centre projects.
• Deep understanding of ELV and life safety systems architecture and integration.
• Strong leadership, planning and team coordination skills.
• Highly organized with strong urgency, attention to detail and commitment to zero‑defect execution.
• Proficiency in commissioning tools, system diagnostic software and network configuration.
• Excellent communication and documentation abilities.
• Analytical mindset with strong troubleshooting and problem‑solving capabilities.
• Ability to manage multiple projects and meet deadlines under pressure.

Essential Requirements

• Hold CSCS Card and SMSTS safety trained.
• Experience commissioning Fire Detection, Voice Alarm, Disabled Systems, Access Control, CCTV, Intruder systems to applicable British, European and NACOSS Standards and knowledge of BAFE/BRE codes of practice.
• Up‑to‑date knowledge of new technologies and regulatory standards relevant to the design process.
• Plan and monitor work to tight time scales and deadlines.
• Multitask across multiple projects.
• Good verbal and written communication skills, including the ability to prepare reports.
• Work creatively and innovatively dealing with core issues with customers.
• Form good working relationships with colleagues, customers and stakeholders.
• Strong understanding of redundancy philosophy, fire strategies for data halls and operational uptime commissioning procedures.
• Experience managing multi‑discipline commissioning teams and running commissioning meetings/workshops.
• Influence, persuade and negotiate effectively.
• Understand and disseminate specifications and technical drawings.
• Display initiative and strong attention to detail.
• Highly motivated and oriented with a strong drive to deliver and succeed.
• Good organisational and time management skills.
• Good presentation and customer‑facing skills.
• PC literate and good understanding of Microsoft products.

Desirable

• FIA/NACOSS Training (Advanced Installer & Advanced Commissioner).
• First Aid Training.
• System knowledge/experience: Fire Alarms – Gent/WINMAG/DRAX/Advanced/Siemens/FAAST/Xtralis/Apollo; PAVA – Honeywell/Baldwin Boxall; Disabled Systems – Baldwin Boxall/C‑TEC; Security System – Milestone/Xplan/CCure/AMAG/Lenel/Hikvision/Axis/Galaxy/Comelit/Commend.
• Previous experience working within Fire, Security or Data Infrastructure industry.
• M&E coordination experience.

Group Compliance & Legal Requirements

• Compliance with all legislative and British Standard requirements.
• Compliance with accreditation bodies schemes from NSI, BAFE, LPCB, FIA and others as required.
• Maximise customer satisfaction with the services provided by GBE Converge.
• Work to reduce, renew and recycle waste on and off sites, including offices.
• Protect the environment and avoid use of toxic materials where possible.
• Work to best safety practice and ensure actions do not cause harm to employees or others.
• Employees will not tamper with issued PPE or plant machinery that may cause harm.
• Ensure all minimum training requirements are met in compliance with relevant ISO standards.
• Ensure any IT incidents are reported and resolved in a timely fashion (internally or externally).
• Maintain a clear desk and screen at all times.
• Compliance to ensure no deliberate breaches in security information and/or systems.

Equal Opportunity Statement

We are an equal opportunity employer and value diversity. All employment is decided on the basis of qualifications, merit and business need.