Quantity Surveyor

NANOAIR CONTROL PTE. LTD.Singaporemycareersfuturepublished 10/14/2026

1. Quantity Surveying & Cost Estimation

  • Prepare detailed quantity take-offs, cost estimates, budgets and quotations for process piping, mechanical piping and ducting works.
  • Review engineering drawings, specifications, P&IDs, isometric drawings and tender documents to determine project requirements.
  • Measure and calculate quantities of piping, fittings, valves, supports, insulation, ductwork and associated materials.
  • Prepare Bills of Quantities (BOQ), material take-off (MTO) and cost breakdowns.
  • Evaluate material, manpower, equipment and subcontractor costs to ensure competitive pricing.

2. Tendering & Procurement

  • Prepare and submit tender proposals, quotations and supporting documentation.
  • Review tender specifications and identify potential cost risks, discrepancies and variations.
  • Source and obtain quotations from suppliers, vendors and subcontractors.
  • Evaluate supplier and subcontractor quotations and negotiate competitive pricing.
  • Assist in preparing purchase requisitions, purchase orders and subcontract agreements.

3. Project Cost Control & Budget Management

  • Monitor project expenditure against approved budgets.
  • Track material usage, labour costs, equipment expenses and subcontractor payments.
  • Prepare monthly cost reports, cash-flow forecasts and project financial summaries.
  • Identify potential cost overruns and recommend cost-saving measures.
  • Maintain accurate records of project costs, commitments and financial performance.

4. Process Piping & Ducting Works

  • Review piping layouts, process flow diagrams, P&IDs, shop drawings and ducting layouts.
  • Carry out quantity measurements for stainless steel, carbon steel and other process piping systems.
  • Calculate quantities for pipes, elbows, reducers, flanges, valves, pipe supports and related accessories.
  • Measure HVAC ducting, exhaust ducting, ventilation systems, fittings, dampers, insulation and supports.
  • Coordinate with engineers and site teams to verify actual site measurements and installation progress.
  • Assist in evaluating costs for fabrication, installation, testing, commissioning and associated works.

5. Variation Orders & Progress Claims

  • Identify, evaluate and prepare Variation Orders (VO) for additional or modified works.
  • Prepare progress claims and payment applications based on completed work.
  • Verify subcontractors' progress claims and payment requests.
  • Maintain records of site instructions, changes in scope and additional works.
  • Assist in preparing final accounts and resolving commercial discrepancies with clients and subcontractors.

6. Project Coordination & Documentation

  • Coordinate with project managers, engineers, consultants, clients and subcontractors.
  • Attend project meetings and site inspections when required.
  • Ensure all quantity measurements and cost calculations comply with project specifications.
  • Maintain proper documentation of quotations, contracts, drawings, purchase orders and cost reports.
  • Support project teams in resolving commercial, contractual and technical matters.
  • Ensure timely submission of claims, reports and project documentation.