Senior Quantity Surveyor

Company: Costain
Apply for the Senior Quantity Surveyor
Location: Kent
Job Description:

Overview

In this Senior Quantity Surveyor role, you will manage all commercial activities for the AMP8 project with Southern Water, ensuring value for money and compliance with contract standards. You will work within the project team to identify risks, control costs, and support timely payments and reporting. The position may lead a small commercial team or report to a more senior commercial leader, depending on project needs. This opportunity lets you shape large-scale water infrastructure delivery and work on a landmark AMP8 programme. You will operate in a collaborative, safety-conscious environment that values clear governance and proactive commercial leadership.

Responsibilities

  • Manage notices, correspondence, and contract administration accurately and timely
  • Identify contractual risks and opportunities and report to Contract Leader
  • Prepare and agree payment applications and certificates; maintain variation/delay/extension and claim registers
  • Ensure compliance with company commercial policies and procedures
  • Assist with monthly progress valuations, claims, and cost reports
  • Interface with customer’s commercial/project teams and prepare pre-Contract tender reports
  • Produce monthly cost forecasts and Contract Leader reports
  • Provide contractual advice to project/site teams; monitor health, safety, and environmental risk
  • Prepare supply chain enquiries, negotiate and close out contracts
  • Plan and implement change control and cost management; monitor procurement plans
  • Maintain document control and office management systems; track minutes and reports
  • Liaise with site teams, supply chain and customer representatives
  • Maintain awareness of current contracts and health/safety regulations

Key requirements

  • Post-graduate commercial experience in construction with a demonstrable track record
  • Strong financial and commercial acumen
  • Practical, methodical approach and structured working style
  • Experience in office management systems, filing and document control
  • Extensive experience in contractual correspondence, reports, and payment certificates
  • Negotiation and leadership abilities to motivate a team
  • Strong analytical skills and knowledge of legal/contractual frameworks
  • Confidence to influence and collaborate with multiple stakeholders
  • Negotiation
  • Team-working
  • Analytical thinking
  • RICS / CICES accredited degree
  • Contractual and commercial governance
  • Cost reporting and forecasting

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Posted: October 16th, 2026