SMSTS Site Supervisor (Mechanical Preferred)

Job type:Contract
Town/City:London
County:Greater London
Discipline:Supervision & Technical
Job ref:KL-12
Post Date:28. 07. 2026
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About the Role

Mechanical Site Supervisor (SMSTS) | £306 Per Shift | 6-Week Contract | London
Location: EC2Y, London
Job Type: Contract (6 Weeks)
Rate: £306 per shift
Hours: 16:00 – 23:00
Start Date: Immediate

About the Role

1st Step Solutions are currently recruiting for an experienced Mechanical Site Supervisor with a valid SMSTS certificate to join a prestigious project in London.

This is a 6-week night shift contract where you will be responsible for overseeing subcontractors carrying out flame proofing works within a plant room, ensuring all work is completed safely, efficiently and in line with site Health & Safety procedures.
We are ideally looking for candidates with a Mechanical background, however applicants with an Electrical background and relevant supervisory experience will also be considered.

Key Responsibilities
  • Supervise subcontractors carrying out flame proofing works.
  • Ensure all works are completed in accordance with Health & Safety legislation and site procedures.
  • Monitor compliance with RAMS and safe systems of work.
  • Carry out regular site safety inspections and address any issues promptly.
  • Liaise with the site management team and subcontractors to ensure works progress safely and efficiently.
  • Maintain high standards of housekeeping and site safety throughout the project.
  • Report any incidents, hazards or non-compliance to the relevant management team.
Requirements
Essential
  • Valid SMSTS certificate.
  • Previous experience supervising Mechanical or M&E subcontractors.
  • Excellent understanding of Health & Safety regulations and site compliance.
  • Strong communication and leadership skills.
Desirable
  • Mechanical background.
  • Valid First Aid at Work qualification.
  • Experience working within live plant rooms or similar environments.
If you have the required experience and are available for an immediate start, we'd love to hear from you.

Apply today with your CV or contact the team at 1st Step Solutions for more information.

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