Lead Estimator

Descon; Lusail; On-site; QAR 180,000 - 300,000; Full time

Job summary

Descon Engineering Qatar LLC is seeking a Lead Proposal Engineer / Lead Estimator to drive the entire bid and estimation cycle for major Oil & Gas maintenance, shutdown, turnaround, brownfield, and EPC projects in Lusail, Qatar.

The candidate will review tender documents, assemble technical and commercial proposals, and develop detailed cost estimates, coordinating with engineering, procurement, planning, HSE, QA/QC, and commercial teams to deliver competitive bids.

Qualifications

• Bachelor’s degree in Mechanical engineering is required.
• 4–8 years of experience in Proposal Engineering / Estimation in Oil & Gas.
• Experience with maintenance contracts, shutdowns, turnarounds, brownfield projects, and plant services.
• Strong knowledge of tendering, contracts, and bid preparation processes.
• Proficiency in Excel and estimation tools; strong technical writing, analytical, negotiation, and presentation skills.

Responsibilities

• Review tender documents and client requirements.
• Lead the preparation of technical and commercial proposals for Oil & Gas projects.
• Develop comprehensive cost estimates covering manpower, equipment, subs, MTOs, materials, logistics, and overheads.
• Coordinate with engineering, procurement, planning, HSE, QA/QC, and commercial teams to shape bid strategy.
• Attend site visits, pre-bid meetings, and client presentations as required.
• Evaluate risks, prepare execution methodologies, schedules, and write-ups.
• Obtain supplier quotations and perform commercial evaluations; review scope deviations and terms.
• Maintain estimation databases and benchmarking data; ensure compliance with tender requirements.

Skills

Tendering / bid processes

Excel

Estimation tools

Technical writing

Analytical skills

Negotiation

Presentation skills

Maintenance contracts

Shutdowns & Turnarounds

Brownfield projects

Plant services

Static & rotating equipment

Piping, mechanical & fabrication

Education

Bachelor’s degree in Mechanical engineering

Tools

Microsoft Excel

Estimation tools

Job description

LEAD PROPOSALS / LEAD ESTIMATOR

Location: Lusail, Qatar

Company: Descon Engineering Qatar LLC

Position Type: Full-Time | Long-Term

Location: Lusail

Descon Engineering Qatar LLC is seeking an experienced and highly motivated Lead Proposal Engineer / Lead Estimator to join our growing team. The successful candidate will play a key role in securing major Oil & Gas Maintenance, Shutdown, Turnaround, Brownfield, and EPC projects by leading the entire proposal and estimation process from bid evaluation to final submission.

Key Responsibilities

• Review and analyze tender documents, ITTs, RFQs, contracts, and client requirements.
• Lead the preparation of technical and commercial proposals for Oil & Gas maintenance, shutdown, turnaround, and brownfield projects.
• Develop comprehensive cost estimates including:
  • Manpower requirements
  • Equipment utilization
  • Subcontractor costs
  • Material take-offs (MTOs)
  • Consumables and logistics costs
  • Indirect and project overhead costs
• Coordinate with engineering, operations, procurement, planning, HSE, QA/QC, and commercial teams to develop competitive bid strategies.
• Attend site visits, pre-bid meetings, tender clarification meetings, and client presentations when required.
• Evaluate project risks and opportunities and incorporate mitigation strategies into proposal submissions.
• Prepare resource loading plans, project execution methodologies, schedules, and technical write-ups.
• Obtain quotations from suppliers and subcontractors and perform commercial evaluations.
• Review and negotiate scope deviations, qualifications, assumptions, and commercial terms.
• Maintain and update estimation databases, historical cost records, and benchmarking data.
• Ensure proposals are compliant with client specifications, company procedures, and tender requirements.
• Support management during bid reviews and approval stages.
• Participate in handover meetings with project execution teams upon award of contracts.

Minimum Requirements

• bachelor’s degree in Mechanical engineering
• Minimum 4-8 years of experience in Proposal Engineering / Estimation within the Oil & Gas industry.
• Strong experience in:
  • Maintenance Contracts
  • Shutdowns & Turnarounds
  • Brownfield Projects
  • Plant Services
  • Static & Rotating Equipment Maintenance
  • Piping, Mechanical & Fabrication Works
• Proven experience handling tenders from major Oil & Gas operators and EPC contractors.
• Strong understanding of project execution methodologies, productivity norms, and cost control principles.
• Excellent knowledge of commercial tendering, contract requirements, and bid preparation processes.
• Proficiency in Microsoft Excel and estimation tools.
• Strong technical writing, analytical, negotiation, and presentation skills.
• GCC experience, particularly in Qatar, will be highly preferred.