Commissioning Manager in Waltham Cross

Operating for over 45 years, King & Moffatt Building Services provide complete Mechanical and Electrical services across all sectors of the construction industry including Industrial, Logistics, Food, Pharmaceutical, Data Centre, Mining, Healthcare, Commercial, Hotel & Leisure, High-End Residential, Public, and Energy. From design stage to the installation and the ongoing maintenance of their facilities, our valued and highly skilled workforce provide our clients with an efficient, reliable and best in class service. A Deloitte Best Managed Company Award winner for eight years running, we pride ourselves on being a full building services solutions provider and have successfully delivered multiple large-scale projects in Ireland, the UK & mainland Europe.

This role is critical in ensuring all systems — including HVAC, electrical distribution, life safety, and BMS are fully tested, verified, and handed over in line with project specifications and industry standards. Acting as the bridge between installation and completion, the Commissioning Manager will ensure a smooth, compliant, and defect-free transition to the client.

• Lead the development and implementation of project commissioning strategies and plans
• Review MEP designs to ensure systems are fully commissionable, identifying requirements for testing, access, and control
• Manage and coordinate commissioning programmes in line with overall project timelines
• Oversee specialist commissioning subcontractors (e.g. water treatment, air balancing, BMS), ensuring quality and accuracy
• Lead and coordinate witnessing of all plant and system testing with clients, consultants, and third-party validators
• Manage Integrated Systems Testing (IST), ensuring all systems operate effectively together
• Identify, troubleshoot, and resolve system performance issues during commissioning phases
• Provide regular progress reports, tracking commissioning status, outstanding activities, and certification
• Liaise closely with clients, consultants, and project teams, providing technical assurance throughout
• Chair commissioning and progress meetings as required
• Oversee delivery of technical training to client teams to support system operation and handover
• Ensure all commissioning documentation is complete, accurate, and included within O&M manuals
• Capture lessons learned to support continuous improvement across future projects

• Minimum 8 years’ experience in commissioning or a senior project engineering role within building services (M&E)
• HNC/HND or Degree in Building Services Engineering, Mechanical, Electrical, or related discipline
• Strong knowledge of commissioning processes across HVAC, electrical, and life safety systems
• Excellent understanding of CIBSE Commissioning Codes and BSRIA guidelines
• Strong leadership and stakeholder management skills
• Excellent problem-solving and technical troubleshooting ability
• Strong communication skills with the ability to produce clear technical reports
• Commercial awareness of project delivery and the impact of commissioning on programme and cost
• Membership of the Commissioning Specialists Association (CSA) at Grade 4 or above
• Experience delivering commissioning on large-scale or complex projects (e.g. Data Centres, Pharmaceutical, Industrial)
• Experience managing integrated systems testing (ISTs)
• Experience leading multi-disciplinary commissioning team

This role reports to the Operations Director or Project Manager and involves managing internal commissioning engineers, technicians, and specialist subcontractors.

At King and Moffatt, we believe in the power of diversity and inclusion to drive innovation, creativity, and success. We are committed to creating a workplace where all employees feel welcomed, valued, and respected regardless of their race, ethnicity, gender, sexual orientation, age, religion, disability, or any other dimension of diversity. We strive to build a culture that celebrates differences, encourages open dialogue, and promotes equal opportunities for growth and advancement. By embracing diversity and fostering an inclusive environment, we not only strengthen our organisation but also enrich the lives of our employees and the communities we serve.