Mechanical Commissioning Manager We are seeking a Mechanical Commissioning Manager to join a major Commercial Project in London. This is an opportunity to play a key role on a high-profile site, leading the mechanical commissioning and ensuring all systems are tested, validated, and delivered to the highest standards, helping drive project excellence through to successful project completion. Your Team You''ll join a hardworking, ambitious, and supportive team where your ideas matter and your development is genuinely prioritised. At Dornan, we invest in long-term career growth through structured progression pathways and continuous training support. The Role Reporting to the Project Director, the Mechanical Commissioning Manager will lead the planning, coordination, and delivery of commissioning activities, ensuring all systems are inspected, tested, and commissioned in line with project specifications and industry standards. As a Mechanical Commissioning Manager, you will act as an ambassador for the company and its values, leading by example while promoting the highest standards of safety, quality, and performance on site. You will be responsible for overseeing commissioning activities across the project, coordinating subcontractors and project teams to ensure systems are delivered fully operational and ready for handover to the client. Responsibilities Lead and coordinate all mechanical commissioning activities to deliver fully tested and operational MandE systems to the cl