Assistant Mechanical Project Manager

Assistant Mechanical Project Manager Opportunity – Commercial & Data Centre Projects - London We are working with a leading M&E Contractor is seeking an Assistant Mechanical Project Manager to join their London team for commercial fitouts and data centres in London. Operating as the Principal Contractor, this organisation has built a strong reputation delivering complex schemes across the data centre, commercial fit-out, and critical infrastructure sectors. With a robust pipeline of secured work and continued growth, this is an excellent opportunity to join a business known for its high-performance culture, quality delivery, and investment in its people.

The Role

As Assistant Mechanical Project Manager, you will share responsibility for the mechanical package on various projects with an established Mechanical Project Manager, ensuring delivery from pre-construction through to commissioning and handover. Key responsibilities include:

• Managing the full lifecycle of mechanical installations on a major data centre scheme
• Coordinating with design teams, subcontractors, and client stakeholders
• Overseeing programme, cost control, and quality assurance
• Driving health & safety standards across site operations
• Leading commissioning and handover processes in line with critical environment requirements
• Reporting into senior leadership and contributing to overall project strategy

About You

• Proven experience as a Mechanical Site Manager/Supervisor within M&E / building services
• Strong background delivering data centre, mission-critical, or large-scale commercial projects
• Experience working for a main contractor or principal contractor environment
• Excellent stakeholder management and leadership skills
• Strong technical understanding of mechanical systems and commissioning processes
• Ability to manage complex programmes in fast-paced environments The Company:
• Established leading M&E contractor with a strong UK presence
• Extensive track record across data centres, commercial fit-out, and critical infrastructure
• Operating as Principal Contractor on major projects
• Known for repeat business, technical excellence, and delivery capability
• Continued growth with a strong pipeline of high-value projects What’s on Offer:
• Highly competitive salary and package (among the best in the market)
• Clear and structured career progression from day one
• Opportunity to work on flagship, high-profile data centre projects
• Supportive, culture-driven business that values its people
• Long-term career stability with a growing contractor If you’re a Mechanical Site Manager/Supervisor looking to step into a forward-thinking contractor, this is a standout opportunity