Location: Hemel Hempstead, London
Contract: Freelance / Contract (June - October)
Rate: Negotiable (Outside IR35)

An experienced Assistant Site Manager is required to support the delivery of a self-storage warehouse development in Hemel Hempstead. This role will involve assisting the Site Manager in overseeing day-to-day site operations on a steel frame construction project, ensuring works are completed safely, on programme, and to a high standard.

• Support the Site Manager in managing all on-site construction activities
• Supervise and coordinate subcontractors, with a strong focus on steel frame erection and associated trades
• Monitor progress against programme and assist in driving works to meet key milestones
• Enforce strict health & safety standards in line with CDM regulations
• Carry out site inductions, toolbox talks, and daily briefings
• Ensure quality control through regular inspections and snagging processes
• Assist with managing site documentation, including RAMS, permits to work, and daily reports
• Coordinate site logistics, deliveries, and material storage
• Maintain clear communication with subcontractors, suppliers, and the wider project team

• Proven experience as an Assistant Site Manager or Site Supervisor within construction
• Strong background working on steel frame / structural steel projects (essential)
• Experience on industrial, warehouse, or self-storage builds highly desirable
• Solid understanding of construction sequencing, site logistics, and programme management
• SMSTS or SSSTS certification
• Valid CSCS card
• First Aid qualification (preferred)

• Strong organisational and coordination skills
• Proactive, hands-on approach to site management
• High standards of health & safety awareness
• Ability to manage multiple trades and priorities simultaneously
• Good communication and problem-solving abilities

• June 15th start date
• Project running through to October
• Competitive, negotiable day rate
• Outside IR35

Please click here to find out more about our Key Information Documents. Please note that the documents provided contain generic information. If we are successful in finding you an assignment, you will receive a Key Information Document which will be specific to the vendor set-up you have chosen and your placement.

To find out more about Progressive please visit (url removed)

Progressive Recruitment, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC(phone number removed) England and Wales