Quantity Surveyor, Site-based, UK Salary: FlexibleContract: Permanent, Full time (36.5 hours per week)(Early Friday Finish)Clearance: Security Cleared or willing to undergo vettingThe Company A UK construction engineering business specialising in HVAC and mechanical systems for complex, safety-critical projects. With decades of experience, we deliver technically challenging work across Energy, Defence, Transport, and other industrial sectors, supporting high-profile infrastructure programmes.The Role We are looking for a Quantity Surveyor to manage all contractual and financial aspects of site-based projects. You will handle contract administration, cost forecasting, monthly reporting, and client liaison, ensuring budgets, programmes, and risks are effectively monitored and mitigated. This is a mechanical/HVAC-focused role working across multiple high-profile sites.Key Responsibilities Administer contracts and manage variations/claims under NEC/JCT frameworks. Prepare monthly financial reports, cost analysis, and forecasting. Produce applications for payment and manage cash flow. Conduct meetings, site tours, and maintain strong stakeholder relationships. Support project teams in monitoring budgets, programmes, and risks. Experience andamp; Qualifications Essential: ONC/HNC in Building Services, Construction Management, or Quantity Surveying. Experience in mechanical installations/HVAC and measuring drawings for cost estimation. Proficient in NEC contract administration. S