About this role

Sub Agent (Water Treatment / Heavy Civils)

Location

Southampton, Hampshire

Contract Rate

£400 - £450 per day (LTD - IR35 Determination Pending)

Duration

Long-Term Contract (AMP8 Framework)

Start Date

Immediate / ASAP

Project Overview

We are seeking an experienced

Sub Agent to join a major delivery contractor managing a multi-million-pound capital upgrade at a key Water Treatment facility in Southampton.

This long-term position offers excellent stability within the newly launched AMP8 framework. Reporting directly to the Site Agent / Project Manager, you will take operational ownership of heavy civil engineering workstreams-including deep drainage, reinforced concrete (RC) structures, temporary works, pipework packages, and earthworks-driving site execution safely, efficiently, and to high quality standards.

Key Responsibilities

Operational Site Delivery

Lead daily site operations for major civils workstreams, coordinating site engineers, general foremen, direct labor, and specialist sub-contractors.

Programming & Lookaheads

Manage 3-to-6 week lookahead programmes, monitoring progress, managing resource allocation, and proactively resolving operational bottlenecks.

Technical & Design Interface

Oversee technical queries (TQs), RFIs, and temporary works management, ensuring alignment between design teams, site operations, and client standards.

Quality & Assurance

Implement and enforce Inspection and Test Plans (ITPs), oversee quality sign-offs, track non-conformances, and maintain comprehensive site records.

Health,

Safety & Environment

Review and sign off on RAMS, issue Permits to Work/Dig, manage environmental compliance, and champion a zero-harm site culture.

Requirements & Qualifications

Experience

Proven track record as a Sub Agent or Senior Site Engineer delivering heavy civils or water infrastructure schemes (WTW / WwTW) under UK AMP frameworks.

Technical Knowledge

Strong background in reinforced concrete structures, deep excavations, underground pipework networks, and temporary works on operational water sites.

Qualifications

HND, HNC, or Degree in Civil Engineering (or equivalent practical industry experience).

Mandatory Certifications

Valid CSCS Card (Black / Gold)

SMSTS

EUSR National Water Hygiene Card

First Aid at Work

Desirable

Temporary Works Coordinator (TWC) and Confined Spaces certification.

Randstad CPE values diversity and promotes equality. No terminology in this advert is intended to discriminate against any of the protected characteristics that fall under the Equality Act 2010. We encourage and welcome applications from all sections of society and are more than happy to discuss reasonable adjustments and/or additional arrangements as required to support your application.

Candidates must be eligible to live and work in the UK.

For the purposes of the Conduct Regulations 2003, when advertising permanent vacancies we are acting as an Employment Agency, and when advertising temporary/contract vacancies we are acting as an Employment Business.

Sub Agent

Key information