Site Agent – Wastewater

Company: Red Sky Personnel Ltd
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Job Description:

Red Sky Personnel are recruiting an experienced Site Agent to be based in Brighton and deliver wastewater and sewage treatment works projects across the Southern Water region. This is a hybrid role: three days a week on site and two days a week working from home.

The Role

  • Leading the day-to-day delivery of civil engineering works at wastewater and sewage treatment works for Southern Water, from mobilisation through to completion and handover.
  • Managing multiple projects across the region, splitting your time between sites three days a week and home-based planning and reporting two days a week.
  • Producing and managing programmes, monitoring progress against plan and resolving delays or clashes early.
  • Managing the commercial position of your projects, including costs, valuations, variations and change.
  • Acting as the day-to-day point of contact for the client, building strong working relationships and keeping them informed.
  • Managing and directing site teams, supervisors and subcontractors, and ensuring work is delivered safely, to quality and on time.
  • Ensuring compliance with CDM 2015 and health, safety and environmental requirements on live operational sites.

What We’re Looking For

  • Proven experience as a Site Agent, Engineer or Sub Agent or similar on civil engineering projects, ideally at wastewater or sewage treatment works or in the wider water sector.
  • A civil engineering qualification (degree preferred) or equivalent experience.
  • Strong planning skills, with the ability to build, manage and report on programmes.
  • Strong commercial awareness, with experience managing costs, valuations and change.
  • Confident dealing directly with clients on live operational sites.
  • SMSTS and a valid CSCS card (Manager level), with a good understanding of CDM 2015.
  • A full UK driving licence and the right to work in the UK. You will need to be able to travel to sites across the region.

Pay & Contract

  • Salary of £60,000 to £67,000, depending on experience.
  • Car allowance.
  • Salary sacrifice schemes.
  • Hybrid working: three days a week on site, two days a week from home

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Posted: October 22nd, 2026