Quantity Surveyor HS2 Rail and CivilsLocation: West Ruislip / North Ruislip (HS2 Site Office)Rate: 500 - 600 per day (Inside IR35)Working Pattern: Hybrid (3 Days On-Site / 2 Days WFH)Sector: Rail and Heavy Civil EngineeringClient: Tier 1 Main Contractor / JVThe Opportunity:We are looking for an experienced Quantity Surveyor to join a Tier 1 flagship project on the HS2 central section. Based out of the West Ruislip/North Ruislip hubs, you will be responsible for the commercial management of multi-million-pound work packages spanning major rail infrastructure and heavy civil engineering.This is a long-term contract opportunity offering a market-leading day rate and a flexible hybrid working model, perfect for a commercial professional used to the fast-paced environment of a "mega-project."Key Responsibilities and DutiesWorking as part of a high-performing commercial team, your duties will include:NEC4 Contract Administration: Manage the day-to-day administration of NEC4 (Option C/E) subcontracts, ensuring strict adherence to the project''s Target Cost and Gain/Pain mechanisms.Commercial Reporting: Lead the monthly Cost Value Reconciliation (CVR) process, providing accurate financial forecasting and variance analysis to the Commercial Manager.Change Management: Proactively identify, notify, and value Compensation Events (CEs) and manage the Early Warning (EWN) register to mitigate project risks.Subcontractor Management: Oversee the full lifecycle of specialist rail and civils su