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Senior Quantity Surveyor
Costain Group
Source: Headcount Labs · original listing ↗
Job data: Headcount Labs, ODbL 1.0. Job descriptions belong to their employers.
Source date: 10/14/2026
About this role
Job Description CMDP, a Joint Venture between Costain and MWHT, have been selected by Southern Water to deliver essential infrastructure solutions for its next AMP8 investment programme. The award is for an initial seven-year term worth at least £500m to Costain, with an option to extend by up to five years. The strategic delivery partner framework will deliver upgrades to water and wastewater assets, including treatment sites, pumping stations and reservoirs, during Asset Management Period 8 (AMP8) and beyond. Southern Water expects that its AMP8 programme, which runs from 2025 to 2030, will be the largest it has ever undertaken. The role of a Senior Quantity Surveyor is to manage all assigned commercial activities within the project environment. The Senior Quantity Surveyor will be involved with all aspects of the project lifecycle, seeking to minimise the costs of a project and enhance value for money whilst achieving the required standards and quality in accordance with contract and Customer’s and/or Contract Leader expectations. This role may work independently, managing a small commercial team or under the direction of and report to a more senior commercial designation. LI-AL1 Undertaking the efficient and effective management and issuing of accurate, timely and compliant notices and correspondence. Ensuring contractual and commercial risks and opportunities are identified to the Contract Leader. Preparation and agreement of applications for payment or the assessment & preparation of payment certificates. Maintaining registers of variations, delay, extension times and claims. Compliant and consistent implementation of the Company's commercial policies and procedures. Assist with preparation of monthly progress valuations and claims for work completed. Interfacing with Customer’s commercial and project teams. Produce pre-Contract tender negotiations & reports where necessary. Produce monthly cost reports, forecasts, and Contract Leader Reports. Review value management and advise on Risk management. Prepare supply chain enquiries, negotiate, administer, and finalise / close out supply chain contracts. Plan and implement change management and cost control. Monitor and update supply chain procurement plan including benchmarking Ongoing liaison with site team, supply chain and Customers’ representatives. Provide contractual advice to the project / site team as and when appropriate. Maintaining awareness of the different construction contracts in current use. Understanding the implications of health, safety, and environmental regulations. Ensure all health, safety and environmental risk situations are brought to the attention of Contract Leader / Project Manager Knowledge, Skills and Experience Post-graduate commercial experience in the construction industry with demonstrable track record of achievement Demonstrable financial and commercial acumen. Practical approach, logical thought process and a methodical way of working. Extensive experience of setting up and/or operating office management systems including filing systems and document control and distribution. Extensive experience of technical minute taking at contractual meetings and able to demonstrate the ability to collate information, prepare reports, payment certificates and interim financial reports and closeout reports. Extensive experience of drafting effective contractual correspondence and the facilitation of collaborative solutions Proven negotiating and team-working skills with the ability to motivate and lead a team Strong analytical skills Demonstrable legal, contractual and construction knowledge Confidence and ability to assert influence Essential: Holds an RICS / CICES accredited degree Desirable: Senior Quantity Surveyors will hold or be nearing completion of Full Membership with RICS / CIEC Costain helps to improve people’s lives with integrated, leading edge, smart infrastructure solutions across the UK’s energy, water, transportation and defence markets. We help our clients improve their business performance by increasing capacity, improving customer service, safeguarding security, enhancing resilience, decarbonising and delivering increased efficiency. Our vision is to be the UK’s leading smart infrastructure solutions company. We will achieve this by focusing on blue chip clients whose major spending plans are underpinned by strategic national needs, regulatory commitments, legislation or essential performance requirements. We offer our clients leading edge solutions that are digitally optimised through the following five services which cover the whole lifecycle of their assets: future-shaping strategic consultancy; consultancy and advisory; digital technology solutions; asset optimisation and complex programme delivery. Our culture and values underpin everything we do. Costain appreciate the time and effort taken when applying for one of our positions but, due to the high volume of responses, we are unable to provide individual feedback on candidates at application phase. We do share individual feedback following an interview. A Disability Confident employer will generally offer an interview to any applicant that disclose they have a disability and meets the minimum criteria for the job as defined by the employer. It is important to note that in certain recruitment situations such as high-volume, seasonal and high-peak times, the employer may wish to limit the overall numbers of interviews offered to both disabled people and non-disabled people. For more details please go to the Disability Confident website: https://www.gov.uk/government/collections/disability-confident-campaign Job Info Job Identification 103420 Job Category Commercial Posting Date 11/05/2026 Degree Level Bachelor's Degree Job Schedule Full time Locations Chatham, Kent, United Kingdom (Hybrid) Contract Type Permanent Driving Required Yes Security Clearance Required No