Tantawan Construction and Service Co.,Ltd.
Estimation Engineer
19 days ago
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Important information
Contract type:
Permanent
Location:
Rayong, Mueang Rayong District, Rayong, Thailand
Work mode:
Onsite
Published on:
8 October 2026
What they need
About the role
This role involves cost estimation and quantity take-off for construction and fabrication projects. You will study scope of work, drawings, specifications, and RFQ/ITT documents to identify work items requiring price assessment. The position requires extracting quantities, preparing cost estimates, and developing pricing schedules while managing data from suppliers and subcontractors.
Key responsibilities
- Study Scope of Work, Drawings, Specifications and RFQ/ITT documents to identify work items requiring price assessment
- Extract quantities and prepare Quantity Take-off/MTO by separating according to drawings, systems, sizes or work types with verifiable reference sources
- Prepare cost estimates for labour, materials, consumables, tools, equipment, subcontractors, transportation and related expenses
- Assess Man-hours, Productivity and work duration considering work methods and constraints of Onshore/Offshore work
- Prepare quotation data from Suppliers and Subcontractors, coordinate with Procurement and compare prices against scope and specifications
- Prepare Cost Breakdown, Unit Rate Build-up and Pricing Schedule according to company and client formats for Proposal team review
- Identify missing data, unclear quantities and cost risks, and prepare Assumptions, Exclusions and Clarification requests
- Revise estimates when drawings, scope or client clarifications change, recording Revisions and verifying completeness of pricing items
- Support delivery of cost data to project team after contract award and improve price database and Productivity from actual project performance
About you
- Bachelor's degree in Mechanical Engineering, Civil Engineering, Industrial Engineering or related field
- Minimum 3 years experience in Cost Estimation or Quantity Take-off for Construction or Fabrication work
- Able to read Structural, Piping Isometric and General Arrangement drawings, Specifications and BOQ/MTO
- Able to extract work quantities such as steel structure weight, pipe length, number of welds and Diameter-inch, painting area and related material items
- Understanding of Fabrication and Installation processes including labour costs, materials, tools, NDT equipment and Testing
- Proficient in Microsoft Excel for Cost Breakdown preparation and formula verification; able to use drawing reading software such as AutoCAD or PDF Measurement Tools
- Able to read technical documents and communicate in English via email, with attention to detail and ability to meet deadlines
- Experience in Oil & Gas, Offshore or Brownfield Modification work will be given special consideration
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