Quantity Surveyor

Job title: Quantity Surveyor (Plumbing & Sanitary / Irrigation) — Junior Classification: Construction → Quantity Surveying Work type: Full time Salary: S$2,800 – S$4,000 per month About us Koon Seng Engineering & Construction is a Singapore M&E specialist contractor in plumbing & sanitary, automatic irrigation, and rainwater harvesting systems. The role You will handle the commercial side of P&S, irrigation and RWH packages: measurement, progress claims, supplier and subcontractor negotiation, variations, and cost control. You report to the Head of QS directly and work daily with project managers and Accounts. What you will do • Take off quantities from M&E drawings for P&S, irrigation and RWH works • Prepare and submit monthly progress claims; track claimed vs certified • Issue RFQs, compare quotations, and negotiate commercial terms with suppliers and subcontractors • Prepare and assess variation orders with proper substantiation • Maintain project cost trackers and material reconciliation • Support subcontract award, back-charges and final accounts • Work with Accounts on DO-to-invoice verification and payment certification What we are looking for • Diploma or Degree in Quantity Surveying, Building, Civil or Mechanical Engineering, or related • 1–3 years' QS experience. M&E or P&S exposure is an advantage; strong fresh graduates will be considered • Able to read M&E drawings and specifications • Solid Excel. Google Sheets, AutoCAD or Bluebeam is a plus What we offer • S$2,800 – S$4,000 per month • Clear Career Progression • Medical Insurance • 5 Day Work Week • Office in Jurong