Site Agent

Location

Rickmansworth

Permanent Full Time (45 hours/week)

We are seeking an experienced Site Agent / Site Manager with a strong focus on project delivery, commercial awareness, and programme control to lead civil engineering projects within the infrastructure sector. This is not a purely operational site role; it requires someone who operates confidently across cost management, contract administration, programme delivery, and stakeholder coordination alongside site leadership responsibilities.

The successful candidate will take ownership of site-based delivery performance, ensuring works are delivered safely, efficiently, and in line with contractual requirements, while also supporting project leadership teams in achieving commercial and programme objectives. You will act as a key link between site operations, commercial teams, and project management, ensuring alignment across all aspects of delivery.

Our client is one of the UK’s leading privately owned civil engineering and infrastructure contractors, with over four decades of experience delivering complex, high‑value projects across both regulated and non‑regulated environments. They operate nationally across major infrastructure frameworks, joint ventures, alliances, and standalone projects, acting as a tier‑one delivery partner to blue‑chip organisations, public sector bodies, and regulated utility clients.

Their core operations span water infrastructure, transport infrastructure, and wider civil engineering works, including highways, rail interfaces, utilities diversions, and major infrastructure upgrades. They also deliver built environment schemes such as public realm improvements and large‑scale development projects, alongside energy and utilities infrastructure.

A key strength of the business is its self‑delivery model, supported by a substantial in‑house workforce and specialist capability across civil engineering disciplines, temporary and permanent works design, and engineering support functions. The organisation is built on long‑standing values and a strong people‑first culture, with a clear focus on development, retention, and internal progression. It is also a Gold Investors in People accredited organisation, reflecting its commitment to training, wellbeing, and continuous improvement.

In terms of project and site delivery, the role involves leading day‑to‑day site activities for civil engineering works in accordance with programme, specification, and quality requirements. You will be responsible for managing site teams, subcontractors, and suppliers to ensure efficient and coordinated delivery while maintaining compliance with RAMS, temporary works procedures, environmental controls, and quality standards. You will also support the development and ownership of construction programmes and short‑term lookahead planning while driving safe, efficient, and buildable delivery solutions in collaboration with engineering and design teams.

From a programme and planning perspective, you will take ownership of programme performance, ensuring progress is actively tracked, reported, and managed. You will identify risks to programme delivery and implement mitigation strategies, while coordinating sequencing of works to optimise productivity and reduce delay.

Commercially, the role requires active involvement in cost control, forecasting, and project financial reporting. You will support subcontractor account management and contribute to change management processes, working closely with commercial teams on NEC contract administration including early warnings and compensation events. You will also identify value engineering opportunities and drive cost efficiency without compromising quality or safety standards.

Stakeholder management is a key part of the role, acting as the main site‑based representative for clients and stakeholders. You will be responsible for maintaining strong professional relationships, ensuring expectations are managed and met, and chairing or contributing to site meetings where progress, risks, and actions are clearly communicated.

Reporting and…