Marconi is a service platform at disposal for all the players in the Oil & Gas and Renewable Energy industries. Designed and equipped to aggressively pursuing the wider market for both large and medium sized projects.​Marconi strategic focus is on delivering world-class services that adhere to international standards while full in compliance with local regulatory frameworks and fostering local content.​

Marconi is set to be an EPCI powerhouse and Logistic Base supporting Africa’s industries requirements with innovative approach and combined with strategic partnerships to serve diverse clientele – from small local businesses to global industry leaders​.

We are recruiting to fill the position below:

Job Title: Cost Estimator

Location: OD Rumuolumeni Fabrication Base, Port Harcourt, Rivers
Job Type: Full Time

Job Objective / Purpose

  • To prepare accurate, competitive and commercially sound cost estimates for EPC tenders, proposals, RFQs and other commercial opportunities, ensuring that quantities, vendor quotations, labour, equipment, logistics, indirect costs, risks, taxes and applicable commercial requirements are properly evaluated and incorporated.

Job Duties / Responsibilities / Accountabilities

  • Review ITTs, RFQs, BOQS, MTOs, drawings, specifications, scope of work and commercial conditions to establish the estimating basis.
  • Develop detailed cost estimates for fabrication, procurement, construction, installation, engineering, logistics and other applicable EPC scope.
  • Extract and quantify materials, equipment, labour and services from MTOS. drawings, specifications and tender documents.
  • Prepare and issue RFQs to vendors/subcontractors for required materials, equipment and specialist services, in coordination with the Proposal Manager/ Bids Engineer.
  • Receive, analyse and compare vendor/subcontractor quotations; identify exclusions, deviations, assumptions, validity, lead time and commercial risks. Build estimate sheets covering direct materials, labour, equipment, subcontractors, logistics, temporary works and other direct costs.
  • Develop indirect cost provisions including supervision, site/fabrication overheads, project support, mobilisation/demobilisation and other applicable project costs. Apply approved allowances, contingency, risk provisions, overheads, profit, taxes and other commercial factors in line with the approved bid strategy.
  • Maintain clear estimating assumptions, exclusions, qualifications and basis-of- estimate records for each tender.
  • Support bid clarifications by providing cost impact assessments for technical and commercial changes, options and client clarifications.
  • Update estimates following revised drawings, MTOS, addenda, clarifications, vendor quotations or changes in scope.
  • Conduct estimate checks, arithmetic verification and cross-checks against. historical/project cost data and available benchmarks.
  • Support preparation of the commercial price sheet, pricing schedules and tender submission documents within required deadlines.
  • Maintain an organised database of vendor quotations, historical rates, productivity rates, material prices and other estimating references.
  • Ensure all estimating activities comply with Marconi procedures, tender instructions, approved commercial strategy and confidentiality requirements.

Job Specifications
Education:

  • Qualification: Bachelor's degree/HND in Quantity Surveying, Engineering, Construction Management, Cost Engineering. Economics, Accounting or a related discipline.

Professional:

  • Qualification: Professional certification/ membership in Quantity Surveying, Engineering, Cost Engineering or a related professional body is an advantage.

Experience/Skill and Competencies

  • 3-8 years' relevant experience in cost estimating. tendering, commercial proposals or project cost control, preferably within EPC, oil & gas, fabrication, construction or engineering services.
  • Strong ability to read engineering drawings, BOQS and MTOS and convert technical scope into cost.
  • Practical experience with vendor/subcontractor RFQs, quotation analysis and price comparison.
  • Good knowledge of materials, fabrication, construction activities, labour, equipment and logistics costing.
  • Strong Excel skills, including formulas, lookups, data analysis and structured estimating workbooks.
  • Ability to work with tender deadlines, multiple estimates and changing scope while maintaining accuracy.
  • Good commercial awareness, attention to detail, analytical ability and documentation discipline.

Apply for this role

Closes Friday 23 October · 1 day left

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How to apply

Application Closing Date
23rd October, 2026.

How to Apply
Interested and qualified candidates should send their CV to: r***@marconi.ng using the Job Title as the subject of the email.

What to submit

  • CV / résumé

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