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Olalekan Sonaike

@olalekansonaike

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I build data dashboards and actionable insights for telecom sales, rollout, and customer retention.

Nigeria

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What I'm looking for

I'm looking to use data analysis, dashboards, and business insights to improve decision-making, customer retention, operational efficiency, and commercial performance.

At Globacom Nigeria, I build Power BI and Excel dashboards that turn sales, revenue, customer, and rollout data into decisions. My work has accelerated executive decision-making by 30% and improved reporting efficiency by 25%.

I improved site-data accuracy by 72% across 1,000+ telecom cell sites, creating standardized data processes that support rollout planning, lease renewals, financial obligations, and profitability reporting.

I also analyze churn, usage, sales channels, and customer behavior to identify retention and growth opportunities. My projects include a 7,043-record telecom churn analysis, where I built a multi-page Power BI dashboard and recommended targeted retention actions.

Experience

Work history, roles, and key accomplishments

Current

Rollout Information Analyst

Current

Globacom Nigeria

Nov 2025 - Present (11 months)

Identified gaps in site data collection and reporting, designed streamlined workflows, and improved site data accuracy by 72% across 1000+ telecom cell sites. Developed centralized databases and dashboards to support rollout planning and lease negotiations.

Data Analysis Data Management Process Improvement Power BI Excel SQL Dashboarding Stakeholder Management

Sales Analyst

Globacom Nigeria

Dec 2023 - Nov 2025 (1 year 11 months)

Built automated dashboards using Power BI and Excel to provide real-time sales and revenue insights, accelerating executive decision-making by 30%. Analyzed sales performance, customer demographics, and churn trends to inform resource allocation and retention strategies.

Power BI Excel SQL Data Analysis KPI Tracking Churn Analysis ARPU Dashboarding

Admin Executive

Globacom Nigeria

Jul 2016 - Dec 2023 (7 years 5 months)

Ensured compliance with statutory tax obligations and coordinated renewal of regulatory certificates, resulting in zero penalties and continuous license validity. Negotiated favorable service terms with vendors to reduce operational costs.

Compliance Vendor Management Negotiation Record keeping Regulatory Affairs

Escalation Specialist

Globacom Nigeria

Oct 2014 - Jul 2016 (1 year 9 months)

Reduced escalated complaint backlog by 28% by resolving complex billing disputes and sensitive service complaints within SLA timelines. Improved customer retention by 12% through structured negotiation and service recovery strategies.

Customer Escalation Conflict Resolution SLA Management Customer Retention Cross Functional Collaboration

Customer Care Representative

Globacom Nigeria

Sep 2012 - Oct 2014 (2 years 1 month)

Handled 60-80 inbound calls daily, improving first-call resolution by 28% and reducing billing-related escalations by 32%. Troubleshot network-related complaints and documented interactions using CRM systems.

Customer Service CRM Siebel Call Detail Records Troubleshooting Data Privacy Communication Skills

Education

Degrees, certifications, and relevant coursework

Microsoft

Microsoft Power BI Analyst, Data Analytics

Microsoft Power BI Analyst certification completed in May 2026.

Deloitte

Data Analytics Job Simulation, Data Analytics

Data Analytics Job Simulation completed in November 2025.

Google

Professional Certificate, Data Analytics

Google Data Analytics Professional Certificate completed in November 2025.

Forage

Data Labeling Job Simulation, Data Labeling

Data Labeling Job Simulation completed in November 2025.

The Data Immersed Community

Certificate, Data

Certificate from The Data Immersed Community completed in December 2024.

University of Lagos

Master of Science, Environmental Toxicology and Pollution Management

2014 - 2015

Master of Science in Environmental Toxicology and Pollution Management. Thesis on heavy metals accumulation in cattle egret tissues and their histological effects on intestine.