\ CALLMACH Engineering Services Company Limited
ISO Certified  · 

Engineering Nigeria's Future with Precision & Integrity

CALLMACH Engineering Services Company Limited delivers world-class infrastructure, oil & gas solutions, and construction excellence across Nigeria and West Africa — trusted by governments, multinationals, and leading corporations.

Scroll
What We Do

Comprehensive Engineering Solutions

From complex oil & gas infrastructure to large-scale civil works, research, agriculture, and international trade — we deliver engineering excellence across every sector.

Building & Civil Engineering
Design and construction of commercial, industrial, and institutional facilities to world-class standards.
Oil & Gas Services
Full-spectrum upstream and downstream services including pipeline construction and HSSEQ compliance.
Research & Development
Applied engineering research driving innovation, efficiency, and sustainable solutions across all sectors.
Agriculture
Modern agri-engineering, farm infrastructure development, and agro-processing facility construction.
Water Supply & Waste Management
End-to-end water supply systems and sustainable waste management infrastructure for communities and industry.
Project Management
End-to-end project oversight from feasibility through delivery — on time, within budget, exceeding expectations.
Import & Export Trade
Strategic sourcing, procurement, and international trade services for engineering materials and equipment.
Technology & Automation
Cutting-edge automation, smart infrastructure, and digital engineering solutions for the modern enterprise.
Engineering
Est. Benin City,
Edo State
About CALLMACH Engineering Services Company Limited

Trusted by Industry Leaders Across Nigeria

CALLMACH Engineering Services Company Limited has been at the forefront of engineering and construction excellence, delivering transformative infrastructure projects across Nigeria and West Africa.

ISO Certified & HSSEQ Compliant
Highest international standards in quality, safety, and environmental management.
Government & Private Sector Track Record
Proven delivery for federal agencies, state governments, oil multinationals, and corporations.
Our Founder
SO
Solomon Bayo Okuo
B.Sc (Ife), M.Sc, MNIQS, MNIM, QSRBN
Chairman / Chief Executive Officer
CALLMACH Engineering Services Company Limited
2, Amadin Street, Uwelu,
Benin City, Edo State
Ready to Start Your Next Major Project?
Partner with Nigeria's most trusted engineering firm. Let's build something extraordinary together.
Home / About Us
Our Story

Engineering Excellence
Legacy

Who We Are

A Legacy Built on Precision & Integrity

CALLMACH Engineering Services Company Limited is a foremost Nigerian engineering and construction firm, headquarters in Benin City, Edo State. The company has grown from a regional contractor to a nationally recognized engineering conglomerate spanning multiple industry verticals.
With an unwavering commitment to quality, safety, and sustainable development, CALLMACH Engineering Services Company Limited has successfully delivered complex engineering projects valued at billions of naira — including critical infrastructure for federal and state governments, oil & gas multinationals, and leading private-sector organizations across Nigeria. The company has seasoned professionals to deliver all the services it renders.

Our Founder & Chairman/CEO
SO
Solomon Bayo Okuo
B.Sc (Ife), M.Sc, MNIQS, MNIM, QSRBN
Chairman / Chief Executive Officer
CALLMACH Engineering Services Company Limited

Solomon Bayo Okuo is a distinguished Quantity Surveyor, project manager and seasoned business leader with decades of experience in engineering project delivery, cost management, and organizational leadership. He founded CALLMACH Engineering Services Company Limited with a vision to build a world-class indigenous engineering firm capable of competing with the best in Africa.

2, Amadin Street, Uwelu,
Benin City, Edo State, Nigeria
CALLMACH Engineering Services Company Limited
Timely delivery of projects efficiently and effectively with modern plants/equipments through well trained personnel, keeping to highest quality standards and work place standards of safety in the field of Engineering across every sector
Our Advantage

Why Choose CALLMACH Engineering Services Company Limited

ISO Certified

Full compliance with ISO 9001, 14001, and 45001 for quality, environment, and occupational health.

On-Time Delivery

100% on-time delivery rate through robust scheduling systems across all contract types.

Trusted Partnerships

Long-term relationships with governments, oil majors, and multinationals built on trust.

Sustainable Practice

Committed to environmentally responsible engineering with minimal ecological footprint.

Financial Strength

Solid backing enabling swift project mobilization without cash-flow interruptions.

Safety Culture

Industry-leading quality and safety record — no record of any fatal incident in all its operations.

Modern Equipment

Fully owned modern plant fleet eliminating third-party dependencies for reliable delivery.

Nationwide Reach

Operational presence in all the geopolitical zones of the country with rapid nationwide deployment capability.

Our Mission

Delivering Engineering Excellence That Transforms Lives

To provide innovative, high-quality, and sustainable engineering, construction, and technology solutions that meet the needs of our clients, communities, and nation — while maintaining the highest standards of professionalism, safety, and integrity.

We are committed to deploying our technical expertise, modern equipment, and experienced workforce to deliver projects that truly make a difference — on time, within budget, and to the satisfaction of every stakeholder.

Quality First
ISO-certified standards in every project we deliver
People-Centred
Engineering solutions that uplift communities
Safety Always
Safety culture embedded in all operations
Integrity
Honest, transparent, accountable at all times
Our Vision

To Be Africa's Most Trusted Indigenous Engineering Firm

To become the most trusted, respected, and innovative engineering services company in Africa — building world-class infrastructure, driving sustainable development, and creating lasting value for generations to come.

We envision a Nigeria — and an Africa — where indigenous engineering firms lead the way in technology, quality, and excellence; where every project we deliver becomes a monument to what Africans can achieve when given the right expertise, tools, and commitment.

Our Core Values
Excellence Integrity Innovation Safety Sustainability Professionalism
Our Journey

Strides in Building Nigeria

From a bold vision to becoming one of Nigeria's most trusted engineering firms — our growth story is a testament to resilience, expertise, and integrity.

Company Incorporation
CALLMACH Engineering Services Company Limited was incorporated in Benin City with a bold vision to transform Nigeria's engineering landscape.
First Major Contract
Landmark infrastructure contract covering road rehabilitation, building remodeling, condition survey of infrastructural facilities, feasibility studies and project management.
Oil & Gas Division Launch
Expansion into oil & gas with a dedicated division and full HSSEQ compliance framework aligned to DPR standards.
ISO Certification Achieved
Obtained ISO 9001, 14001, and 45001 certifications confirming world-class quality and safety management.
Technology & Expansion Era
Launching our Technology & Automation division and expanding operations across West Africa. Creation of database for research and development.
Ready to Work with Nigeria's Best?
Join 50+ satisfied corporate clients. Let's discuss your next project today.
Home / Services
Our Capabilities

Comprehensive Engineering
Services

What We Deliver

Ten Pillars of Engineering Excellence

Each service division is led by seasoned professionals with deep sector expertise, modern equipment, and a relentless commitment to client satisfaction.

Building & Civil Engineering
Building & Civil Engineering

Full-cycle design, procurement, and construction for commercial, industrial, residential, and institutional facilities to world-class standards.

Structural DesignRoad ConstructionBridgesDrainage
Oil & Gas
Oil & Gas Services

Upstream and downstream engineering including pipeline installation, flow station construction, and comprehensive HSSEQ management.

Pipeline WorksFlow StationsHSSEQMaintenance
Research & Development
Research & Development

Applied engineering research and development driving innovation, operational efficiency, and sustainable engineering solutions across all sectors.

Applied ResearchInnovationFeasibilityTechnology Transfer
Agriculture
Agriculture

Modern agri-engineering, farm infrastructure development, irrigation systems, and agro-processing facility construction for large-scale agricultural ventures.

Farm InfrastructureIrrigationAgro-ProcessingRural Dev.
Water Supply & Waste Management
Water Supply & Waste Management Systems

End-to-end water supply infrastructure, borehole drilling, treatment plants, and sustainable waste management systems for communities and industry.

Water TreatmentBoreholeSewerageSolid Waste
Mining
Mining & Solid Minerals

End-to-end mining services including geological surveys, mineral extraction, processing, and environmental reclamation for sustainable operations.

ExplorationExtractionProcessingReclamation
Project Management
Project Management

Rigorous PMI-aligned program management from feasibility through final commissioning — on time, on budget, and to the highest quality standards.

PlanningCost ControlRisk MgmtQA/QC
Import & Export Trade
Import & Export Trade

Strategic sourcing, procurement, customs clearing, and international trade services for engineering materials, equipment, and commodities across global markets.

ProcurementClearingLogisticsTrade Advisory
Land & Real Estate
Land & Real Estate

Strategic land acquisition, valuation, property development, and asset management for corporate and institutional clients seeking quality investments.

AcquisitionValuationDevelopmentAdvisory
Technology & Automation
Technology & Automation

Smart infrastructure, SCADA, IoT integration, and digital engineering solutions transforming operations into intelligent, connected ecosystems.

SCADAIoTAutomationSmart Grids
Our Methodology

Project Delivery Process

Our proven four-stage framework ensures every project is executed with clarity, precision, and consistent quality from inception to handover.

01
Discovery & Scoping

Client consultations, site assessments, feasibility studies, and precise scope definition before any commitment.

02
Design & Planning

Engineering design, regulatory approvals, procurement strategy, and comprehensive project scheduling.

03
Execution & Control

Rigorous site execution with real-time monitoring, QA/QC inspections, HSE enforcement, and risk management.

04
Commissioning & Handover

Testing, documentation handover, client training, and post-delivery support for long-term performance.

Certifications & Memberships

Standards That Define Excellence

CALLMACH Engineering Services Company Limited holds certifications with Nigeria's foremost professional and regulatory bodies, affirming our commitment to the highest engineering and safety standards.

ISO 9001
Quality Management
ISO 14001
Environmental Mgmt
ISO 45001
Health & Safety
COREN Registered
Engineering Council of Nigeria
NSE Member
Nigerian Society of Engineers
DPR Certified
Petroleum Compliance
Have a Project in Mind?
Speak with our senior engineers and get a tailored proposal within 48 hours.
Home / Contact Us
Get in Touch

Let's Build Something
Extraordinary

Reach Us

We're Ready to Discuss Your Project

Head Office / Headquarters
2, Amadin Street, Uwelu,
Benin City, Edo State, Nigeria
Email
pbo1030@yahoo.com
Business Hours
Mon – Fri: 8:00AM – 5:00PM
Saturday: 9:00AM – 1:00PM
Chairman / CEO
SO
Solomon Bayo Okuo
B.Sc (Ife), M.Sc, MNIQS, MNIM, QSRBN
Follow Us

Find Our Office Location