Senior Estimation Engineer - Fabrication Industry (Pressure Vessels, Skid Packages, Heat exchangers)

Sigma Engineering Works, a company of Mazrui Energy is seeking a Senior Estimation Engineer to join our Fabrication Team in Mussafah Industrial Area , Abu Dhabi, UAE .

Sigma Engineering Works is an engineering service company, offering fabrication, manufacturing, service & repair, and other services to the energy industry. Established in 1996, Sigma Engineering is qualified to engineer and fabricate a full range of products based on customer specification, raising the bar in safety standards and reliable delivery. Sigma Engineering Works is part of Mazrui International, a privately-held diversified holding company that operates across numerous industries and asset classes.

Job Responsibilities

Receipt & Review of Enquiries

• Receive and review enquiries from the Sales Department or directly from clients.
• Study ITBs, RFQs, specifications, drawings, and scope documents to fully understand technical and commercial requirements.
• Clarify technical queries with clients and internal teams, referencing applicable codes and standards such as:
• ASME Section VIII Div. 1 & 2, API 650 / API 620, ASME B31.3 / B31.8
• BS EN 12079, DNV 2.7-1, and other project-specific standards

Preliminary Design & Estimation

• Coordinate with Engineering to obtain preliminary design inputs based on client design parameters.
• Prepare Bills of Materials (BOM), Material Take-Offs (MTOs), and weight calculations for:
• Pressure vessels and static equipment
• Heat exchangers and skid-mounted packages
• Develop preliminary layouts and cutting plans using AutoCAD, where required, to optimize material utilization and reduce wastage.
• Define execution assumptions, fabrication methods, and scope boundaries for accurate pricing.

Material & Subcontracting Coordination

• Coordinate with the Procurement Department to obtain material prices and delivery timelines.
• Collect and evaluate subcontractor quotations for machining, NDT, PWHT, coating, HDG, E&I works, transportation, and site activities.
• Conduct market surveys to track material prices, subcontract rates, and productivity norms.

Production Cost Estimation

• Estimate production resources and man-hours by coordinating with Production, Fabrication, and Machine Shop teams.
• Reference historical data, time-study charts, and productivity benchmarks to determine:
• Fabrication man-hours, Machining hours, E&I installation and testing hours
• Prepare complete cost build-ups covering:
• Materials, Labor and supervision, Subcontracting, Consumables, Overheads, Risk allowances and profit margins

E&I and Skid Package Estimation (Key Requirement)

• Prepare cost estimates for Electrical & Instrumentation scopes including:
• Instrument supply, mounting, tubing, and hook-up
• Electrical panels, JBs, cabling, termination, and earthing
• Loop checks, calibration, and commissioning activities
• Ensure E&I scopes are fully integrated with mechanical and skid layouts to avoid gaps or overlaps.

Quotation Preparation & Internal Approval

• Prepare complete quotation packages including:
• Technical and commercial covering letters
• Detailed cost sheets and BOQs
• Assumptions, exclusions, and qualifications
• Present estimates and sales summary sheets to the Engineering Head and Sales Department for review and approval.
• Support pricing strategy discussions, margin analysis, and value engineering proposals.

Client Coordination & Contract Review

• Ensure quotations are submitted within the stipulated tender timelines.
• Support Sales during technical discussions, clarifications, and negotiations with clients.
• Upon receipt of Purchase Orders, conduct technical contract reviews and provide feedback to Sales before PO acceptance.

Post-Award Handover

• After PO acceptance, hand over complete estimation and tender documentation to the assigned Project Engineer, including:
• Approved cost sheets and assumptions, Vendor and subcontractor quotations
• BOMs, MTOs, and execution notes
• Support smooth transition from estimation to project execution.

Qualifications

• Education - Mechanical Engineering
• Minimum 12–15 years of experience in estimation and tendering for oil & gas, EPIC, or industrial projects.
• Proven experience in fabrication, skid packages, pressure vessels, heat exchangers, and E&I estimation .
• At least 8–10 years of Middle East experience with EPCs, fabricators, or package vendors
• Sound knowledge of fabrication processes, welding, NDT, PWHT, testing, and surface protection.

If this sounds like you, please apply to this job with your updated CV.