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