Sigma Engineering Works, a company of Mazrui Energy is seeking a Senior Estimation Engineer to join our Fabrication Teamin 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 1215 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 810 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.
