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Job ID : 1599032 Date Updated : June 26th, 2026

PR/119760 | Proposal Engineer

Location Thailand, Chon Buri
Job Type Permanent Full-time
Salary Negotiable, based on experience

Job Description

Position:                                   Proposal Engineer

Salary:                                     50,000 – 70,000 THB / month

Welfares:                                 Bonus, PVF, Housing, COLA, and others                        

Location:                                   Sriracha, Chonburi

Working Day:                           Monday to Friday 

Responsibilities:

  • Assist in reviewing RFQs, ITBs, and RFPs to identify scope and requirements.

  • Prepare draft technical and commercial inputs.

  • Compile compliance statements, method outlines, and basic execution plans.

  • Coordinate with vendors/subcontractors for quotations and technical clarifications.

  • Support in preparing BOQs, cost breakdowns, and man-hour estimates.

  • Work with supply chain and engineering teams to gather cost data.

  • Participate in pre-bid meetings and site visits with senior engineers.

  • Handle routine proposal clarifications and documentation.

  • Develop skills in proposal writing, cost estimation, and contract review.

 

Qualifications:

  • Bachelor’s degree in Mechanical, Chemical, or related Engineering discipline.

  • 1–2 years of experience in proposal, tendering, or engineering support (oil & gas preferred).

  • Strong MS Office skills (Excel, Word, PowerPoint); familiarity with AutoCAD or similar tools is a plus.

  • Good communication and organizational skills.

  • Eagerness to learn and ability to work under deadlines.

  • Fluent in English.

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General Requirements

Minimum Experience Level Over 1 year
Career Level Mid Career
Minimum English Level Business Level
Minimum Japanese Level None
Minimum Education Level Associate Degree/Diploma
Visa Status No permission to work in Japan required

Job Location

  • Thailand, Chon Buri

Work Conditions

Job Type Permanent Full-time
Salary Negotiable, based on experience
Industry Other (Manufacturing)

Job Category