Commissioning Manager in London

Based from: Various sites across the UK

Region covered: UK Wide

Reports to: Contracts Manager

The Role

This role will oversee the commissioning of Life Safety, Fire Detection, Fire Suppression, Sprinkler, Security, and Data Infrastructure systems specifically within large-scale Industrial, Commercial, Residential and Data Centre environments. The Commissioning Manager will provide technical leadership, challenge design information, manage multidiscipline commissioning teams, and ensure all systems are integrated, validated, and handed over in accordance with all standards, legislation, project specific standards and client timescales.

Duties and 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 set for each project/system and ensure they are in place as per the commissioning plan/programme.
• Plan across multiple projects to ensure commissioning plans/programme/resources are in place and that one project doesn’t fail due to another project over-running.
• Coordinate and manage integration workshops between life safety systems, security systems, sprinklers, fire suppression and data systems.

• Ensure the project commissioning plan is in place and lead and supervise commissioning engineers on site in conjunction with the project site team.
• Carry out weekly checks with commissioning engineers to ensure programme being adhered to 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 reverified before system handover.
• Implement and manage commissioning gateways, punch list management, and closure.

• Verify compliance with Specifications, BAFE, BS, EN, and GBEC Policies and procedures.
• Support standardization 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.

• 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, BIM, Cx software, ATP).

• Lead, mentor, and train commissioning teams and engineers.
• Demonstrate a key focus in driving force to deliver project close outs.
• Communicate risks early, escalate blockers, and drive issue resolution to protect milestones.
• Support end-user training and handover of fully validated systems.
• Ensure coordination with other trades (mechanical, electrical, BMS, lifts, etc) to ensure smooth integration.
• Provide technical support and troubleshooting throughout project execution.

• 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.

No job description can be entirely comprehensive and the jobholder will be expected to adapt and carry out such other duties as may be required from time to time, on the understanding that they will be within the individual's remit and capability, and consistent with the status and responsibilities of the role within the business.

Person Specification

• Skills & Competencies

• Minimum 5+ years senior commissioning experience on large commercial or Data Centre projects.
• Deep understanding of ELV and life safety systems architecture and integration.
• Presenting & demonstrating commission delivery position to senior management teams.
• 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.

• Hold CSCS Card and SMSTS Safety Trained.
• Experience in working on and commissioning Fire Detection, Voice Alarm, Disabled Systems, Access Control, CCTV, Intruder systems to the applicable British, European and NACOSS Standards and knowledge of all relevant BAFE/BRE codes of practice.
• To be conversant with and up to date in respect of new technologies and regulatory standards that are relevant to the design process.
• Minimum of 5+ Years Experience Commissioning Medium/Large Projects.
• 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 to have strong attention to detail.
• Be highly motivated and orientated with a strong drive to deliver and succeed.
• Have good organisational and time management skills.
• Good presentation and customer facing skills.
• PC Literate and Good understanding of Microsoft Products.

• 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 of working within Fire, Security or Data Infrastructure industry.
• M&E Co-ordination experience.

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

Working Conditions

Primarily site-based role with travel between multiple project locations (this may also include projects outside the UK). The position demands the capability to work across a wide range of challenging site environments, including construction areas, restricted technical spaces, live data halls, and high-security facilities. The Commissioning Manager must consistently operate under intense time pressures, strict programme deadlines, and critical-path conditions where commissioning activities directly impact project completion and client operations, this may involve working additional hours, evenings and weekends to meet these deadlines. The ability to remain calm, organised, and decisive in high-pressure scenarios is essential to ensure safe, efficient, and successful project delivery.

Group Compliance

As part of the companies compliance to The Health & Safety at Work Etc Act, ISO for Quality, ISO for Environmental and ISO for Information Technology, there are several key objectives that are issued each year upon management review that we expect all staff to work towards in order for the company to meet these objectives and include but are not limited to:

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

Our market-leading offering provides you with benefits that suit your lifestyle. We have a virtual GP on hand for you and members of your household. So you can get expert advice by video or phone without having to leave your home. We offer financial wellbeing assistance through our Salary Finance scheme. For example, you could access 50% of your earned pay before payday for a small fee. Salary Finance also offers competitive loans.

When you join us, we’ll give you a link to our flexible lifestyle benefits platform, Choices. You might choose to purchase up to five extra days’ holiday each year. You might buy critical illness insurance, seek dental treatment or buy technology products at an affordable cost. There are many choices!

We give you access to high street discounts from thousands of well-known retailers, gyms and more through our MiDeals platform. And we have a cycle-to-work scheme. Life cover of up to four times your salary is available. We also offer enhanced pension contributions, a save-as-you-earn scheme, and a Mitie Matching Share Plan (you could even be awarded free shares in Mitie).

We award our employees with Mitie Stars as recognition for their hard work. There are cash prizes up for grabs each month and at the end of the year there’s a chance to scoop a top prize of £10!

Our success is a direct result of the experience and quality of our people. Progressing your career is therefore a top priority for us. We offer a diverse variety of training and development avenues via a wide selection of learning resources to suit you.

We are committed to ensuring our recruitment process is inclusive and accessible to all. If you have a disability or long-term condition (for example dyslexia, anxiety, autism, a mobility condition or hearing loss) and need us to make any reasonable adjustments, changes or do anything differently during the recruitment process, please let us know by emailing at.