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Mechanical Supervisor

5 day weekBest Companies UK '25Onsite · Kent, UK

The 4-day week in United Kingdom

About the role

CMDP+ is looking for a Site Supervisor (Mechanical Bias) to join our Southern Water Framework. MWH Treatment and Costain Group are part of the CMDP+ joint venture that will deliver a range of construction schemes to maintain and improve Southern Water’s water supply and wastewater treatment works within the South and Southeast regions.

At Costain, we believe diverse perspectives drive innovation. If you’re passionate about making a positive impact and think you can bring value to our team, we’d love to hear from you—even if you don’t tick every box. Your unique skills and experiences could be exactly what we need.

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  • Supervision of site mechanical installations

  • Ensuring SHE standards are maintained and safe systems of work are being adhered to

  • Ensuring a high-quality product is being produced in line with current standards and specifications.

  • Attend site inductions and toolbox talks.

  • Ensure mechanical safety rules are adhered to and supporting documentation is produced in line with CMDP mechanical safety rules.

  • Carry out regular mechanical safety inspections on temporary and permanent equipment.

  • Assist with compilation

Knowledge, Skills, and Experience:

Essential

  • HNC or higher within Mechanical Engineering discipline

  • Previous water/wastewater site experience

  • SSSTS or SMSTS

  • AAW

  • Membership within a relevant professional

  • HNC or higher within Mechanical Engineering discipline

  • SSSTS or SMSTS

About Costain

The FTSE-listed infrastructure solutions company behind UK rail, road, water and energy programmes — #9 Best Big Company to Work For in the UK (2025), 165+ live roles.

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