Senior Mechanical Project Manager (Site-Focused) | M&E Building Services | Southampton area | £65,000£80,000 Car Allowance Benefits This is a fantastic opportunity for an experienced Mechanical Project Manager to join a respected M&E Building Services contractor delivering projects from £200k to £5m across the commercial, office fit-out, healthcare, education, industrial, and leisure sectors. The company has built a strong reputation for delivering high-quality mechanical installations and is known for its collaborative culture, technical capability, and long-standing client relationships. With a secure pipeline of repeat business and continued growth, they are now looking to strengthen their project delivery team. Projects are predominantly within commercial and office fit-out environments, alongside selected healthcare and education works. Mechanical packages typically include HVAC systems, heating and cooling plant, ventilation, pipework, public health services, and plantroom installations. This is a site-focused Senior Project Manager role, working closely with a site-based Contracts Manager and wider delivery team to ensure projects are delivered safely, on time, and to the highest standards. The Role Senior Mechanical Project Manager As Senior Mechanical Project Manager, you will play a key role in the successful delivery of mechanical building services projects, taking responsibility from initial handover through to completion. This is a hands-on, site-led role where you will be heavily involved in day-to-day project delivery, working closely with site teams, subcontractors, and clients. You will be responsible for managing projects individually or supporting across multiple smaller projects, ensuring smooth coordination, strong communication, and high-quality delivery throughout. Key responsibilities include: Managing mechanical building services projects from handover through to completion Overseeing projects typically ranging from £200k to £5m Working closely with a site-based Contracts Manager and supporting wider site teams Coordinating subcontractors, suppliers, and on-site labour Managing programme, progress, and day-to-day delivery on site Acting as a key point of contact for clients and stakeholders Ensuring all works are delivered in line with technical specifications and standards Monitoring project costs, variations, and overall commercial performance Supporting collaboration between site, design, and pre-construction teams Contributing to a positive and productive site environment Candidate Requirements The successful candidate will have a strong background in Mechanical Building Services project delivery and will be comfortable operating in a site-focused environment. Experience as a Mechanical Project Manager, Senior Mechanical Project Manager, or Mechanical Site Manager ready to step up Strong background within M&E or Mechanical Building Services contracting Proven experience delivering mechanical projects, typically up to £5m Strong technical understanding of HVAC systems, plant, pipework, and associated services Experience coordinating site teams, subcontractors, and project stakeholders Good commercial awareness with the ability to manage costs and variations Strong organisational, communication, and leadership skills This role requires experience within mechanical installation contracting. Candidates from FM, maintenance, or service-only backgrounds will not be suitable. We are looking for individuals with a stable employment background who can demonstrate consistent delivery across previous roles. Remuneration Package Senior Mechanical Project Manager £65,000 £80,000 Car Allowance Company Pension Scheme Life Cover (Death in Service) Employee Wellbeing Support Company-Funded Training and Development Genuine Career Progression Opportunities Additional Benefits This role would suit candidates currently working as: Mechanical Project Manager, Senior Mechanical Project Manager, Mechanical Site Manager, Mechanical Supervisor, M&E Project Manager, Mechanical Building Services Project Manager. Next Steps Please apply online today, or contact Rob at David Leslie Ltd for an informal and confidential discussion. About David Leslie Ltd David Leslie Ltd is a family-run construction recruitment consultancy with over 20 years experience connecting professionals and employers across the UK. Specialising in the Building, Fit-Out, and M&E Building Services sectors, our approach is built on trust, integrity, and long-term partnerships, ensuring both clients and candidates receive a service that is personal, transparent, and expertly delivered.