18-Month Contract | -320 per day CIS Sole Trader

We are currently recruiting for an experienced Mechanical Supervisor to join a major construction project in Northamptonshire on an 18-month contract basis.

This is an excellent opportunity to join a well-established M&E contractor delivering a high-profile project. The successful candidate will have a strong ductwork background, progressing from the tools into supervision, with extensive knowledge of commercial ventilation systems, fire damper installations, and industry compliance standards.

As Mechanical Supervisor, you will be responsible for overseeing all mechanical ventilation and ductwork installation activities on site, ensuring works are delivered safely, efficiently, and to the highest quality standards.

• Supervising mechanical and ductwork installation works across the project
• Managing site operatives and specialist subcontractors
• Coordinating ductwork installations in line with design specifications and programme requirements
• Reviewing and managing VCDs (Ventilation Commissioning Documentation)
• Overseeing the installation, inspection, and compliance of Fire Dampers
• Carrying out quality inspections and site audits
• Liaising with project managers, consultants, and other trades on site
• Supporting commissioning, testing, and handover activities
• Ensuring compliance with all health & safety procedures and industry standards

To be considered for this role, you must have:

• Proven experience working as a Mechanical Supervisor on commercial construction projects
• Previous hands-on experience as a Ductwork Fitter
• Strong knowledge and experience installing Galvanised Commercial Ductwork
• A solid background within HVAC and ventilation systems
• Experience reviewing and managing VCDs (Ventilation Commissioning Documentation)
• Knowledge of Fire Dampers, including installation requirements, testing, and compliance procedures
• Strong understanding of TR19 and DW144 standards
• Ability to interpret mechanical drawings, specifications, and installation details
• SSSTS or SMSTS
• CSCS Card
• Relevant mechanical or ductwork qualifications

• -320 per day
• CIS Sole Trader payments
• 18-month contract
• Long-term project with excellent continuity of work
• Immediate start available
• Opportunity to work on a flagship construction scheme in Northamptonshire

If you are a Mechanical Supervisor with a proven ductwork background, experience as a Ductwork Fitter, and a strong understanding of galvanised commercial ductwork, VCDs, Fire Dampers, TR19 and DW144 standards, we would like to hear from you.

Apply today with your latest CV or contact us for a confidential discussion.