Commercial Manager Location: Slough or Surrey Contract: 6-Month Contract (Inside IR35 – Umbrella) Hybrid working
Rate: Up to £650/day Umbrella Sector: Water / Wastewater – Sewage Treatment Works Client-Side Role
Role Overview We are recruiting a Commercial Manager for a client-side position on major Sewage Treatment Works infrastructure projects across Slough and Surrey. Working closely with the Senior Project Manager and Senior Technical Manager, you will provide full commercial leadership to ensure projects are proactively managed, fully governed, and deliver strong value for money.
This is a hands-on role responsible for the accurate forecasting of VOWD, cost control, contractual governance, reporting and assurance across the project lifecycle. You will also support junior commercial staff where required.
Key Responsibilities Lead the project's commercial management as it progresses through the client Stage Gate governance process .
Provide commercial oversight, assurance and proactive cost management throughout delivery.
Ensure full compliance with financial governance and internal commercial processes, contributing to governance and contract approval papers.
Prepare and issue Monthly Cost Forecast Reports, tracking expenditure versus budget and identifying risks, issues and mitigations at an early stage.
Manage and report on contingency and risk allowances .
Review and approve monthly payment applications and invoices, including identifying audit requirements and ensuring actual costs align with agreed scope, schedule and outputs.
Ensure accurate and timely payments and support the agreement of Final Accounts in line with contract requirements.
Lead and resolve commercial claims as required and provide commercial advice to the wider business.
Provide guidance regarding Purchaser/Project Manager duties and other contractual obligations under the contract.
Conduct contract administration duties, including:
Issuing and responding to formal correspondence
Monitoring and recording changes, risks and contractor performance
Capturing and communicating contractual lessons learnt
Actively promote value-for-money decision making across project delivery.
Provide commercial mentoring and guidance to junior team members as required.
Essential Requirements Degree in Quantity Surveying, Commercial Management or a related discipline.
Strong experience in client-side commercial management on infrastructure or construction projects (water sector experience advantageous).
Proven capability managing:
Cost forecasting (VOWD)
Change control
Claims resolution
Final account negotiation
Commercial governance processes
Excellent commercial reporting and stakeholder management skills.
Desirable MRICS or working towards chartered status.
Experience working within regulated utilities or large programme delivery environments.
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