Quantity Surveyor at O.K.I. (Nig) Limited

O.K. Isokariari (Nigeria) Limited is seeking an experienced Quantity Surveyor to support the commercial, financial and contractual management of its construction projects in Port Harcourt, Rivers State.

Employer: O.K. Isokariari (Nigeria) Limited
Job Title: Quantity Surveyor
Location: Port Harcourt, Rivers State
Employment Type: Full time
Industry: Building and Construction / Civil Engineering
Experience: 7 to 10 years
Qualification: BSc or HND in Quantity Surveying or a related discipline
Salary: Not specified
Application Deadline: 25 November 2026

Job Overview

O.K. Isokariari (Nigeria) Limited is seeking an experienced Quantity Surveyor to support the commercial, financial and contractual management of its construction projects in Port Harcourt, Rivers State.

The successful candidate will oversee project cost planning, cost estimation, budget monitoring, procurement scheduling and cost reporting. The role also involves preparing Bills of Quantities (BOQ), evaluating contractor claims, managing contract variations and coordinating project schedules with procurement, cash flow and site execution activities.

The Quantity Surveyor will work closely with project managers, engineers and procurement teams to ensure construction projects are delivered within approved budgets and agreed timelines.

About O.K. Isokariari (Nigeria) Limited

O.K. Isokariari (Nigeria) Limited is an Engineering, Procurement and Construction (EPC) company established in 1970 and incorporated in 1972.

The company has over 50 years of experience in civil engineering and building projects. Its operations include infrastructure development, highways, bridges and residential construction.

The company also operates asphalt and mixing plants, quarry operations and transport fleets to support its construction activities. It serves government agencies and private sector clients.

Key Responsibilities

1. Cost Estimation and Budget Management

• Prepare detailed cost estimates, budget forecasts and Bills of Quantities (BOQ) for civil engineering, infrastructure and building projects.
• Monitor project budgets throughout the construction lifecycle.
• Conduct material take-offs and cost analysis using engineering drawings and site specifications.
• Prepare periodic financial and cost reports.
• Identify budget variances and recommend appropriate cost control measures.

2. Project Planning and Scheduling

• Develop baseline project schedules and Work Breakdown Structures (WBS) in collaboration with Project Managers and Site Engineers.
• Align material procurement and labour resource schedules with the master construction timeline.
• Coordinate procurement, cash flow and resource allocation with site execution milestones.
• Monitor project schedule progress against cost performance using Earned Value Management.
• Identify schedule variances, potential delays and budget overruns.

3. Contract Administration and Commercial Management

• Review construction contracts and contractual variations.
• Manage variation orders, site instruction evaluations and contractor claims.
• Evaluate extension of time (EOT) claims and conduct financial risk assessments.
• Prepare and manage interim valuations and site measurements.
• Prepare payment applications for clients and subcontractors.
• Perform final account reconciliations with clients, subcontractors and suppliers at project handover.

4. Procurement and Tender Management

• Prepare tender documentation for construction projects.
• Evaluate subcontractor quotations and negotiate subcontract agreements.
• Support bid evaluations and procurement decisions.
• Coordinate procurement activities with project schedules and financial requirements.
• Identify opportunities to secure optimal commercial value for construction projects.

5. Cost Control and Reporting

• Maintain accurate project cost records and commercial documentation.
• Monitor cost performance against project schedules and approved budgets.
• Conduct Cost Value Reconciliation (CVR).
• Prepare periodic financial reports and cost performance updates.
• Support continuous improvement in commercial and cost management practices.

Requirements and Qualifications

Applicants should possess the following:

• BSc or HND in Quantity Surveying or a related discipline.
• 7 to 10 years of proven experience in commercial cost control and project planning.
• Relevant experience in civil engineering, infrastructure and heavy construction projects.
• Strong knowledge of project scheduling, cost planning, cost estimation and contract administration.
• Experience preparing Bills of Quantities, interim valuations, payment applications and final accounts.
• Good understanding of construction contracts, contractor claims and variation management.

Technical Skills and Software Requirements

Project Planning Tools

• Advanced expertise in Primavera P6.
• Advanced expertise in Microsoft Project.
• Knowledge of Work Breakdown Structures, baseline scheduling and Critical Path Method.

Costing and Measurement Standards

• Advanced Microsoft Excel skills, including financial modelling, formulas and conditional tracking.
• Knowledge of standard methods of measurement, including BESMM, CESMM and NRM.
• Understanding of Cost Value Reconciliation (CVR).
• Knowledge of FIDIC and standard Nigerian construction contract terms.

Costing and Design Tools

• AutoCAD.
• CostX.
• PlanSwift.
• QuickScale.

Professional Memberships and Certifications

Registration or membership with any of the following professional bodies is an added advantage:

• Nigerian Institute of Quantity Surveyors (NIQS).
• Registered Quantity Surveyor (RQS).
• Project Management Institute (PMI).
• Project Management Professional (PMP).
• PMI Scheduling Professional (PMI-SP).
• Equivalent recognised professional bodies.

How to Apply

Interested and qualified candidates should send their updated CV to:

Email: hr@okisokariari.com

Email Subject: Quantity Surveyor

Applicants should use the advertised job title as the subject of their email.

Application Deadline: 25 November 2026.