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Taiwo Afolayan

Taiwo Afolayan

Certified

Data Analyst

Ernst & Young | Lagos, Nigeria

Technologies

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Introduction to Python

Data scientist, turning data chaos into organized knowledge.

My Work

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Understanding Data Science

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Introduction to SQL

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Introduction to Python

My Certifications

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Data Literacy

Data Literacy

DataCamp Course Completion

Take a look at all the courses I’ve completed on DataCamp.

My Work Experience

Where I've interned and worked during my career.

Ernst & Young | Dec 2022 - Present

Senior Consultant - Data Analytics

▪ Led data analytics support for audits of clients across diverse sectors (consumer markets, financial services, oil & gas), ensuring quality and adherence to audit standards. ▪ Designed and executed data extraction and transformation strategies using SQL, ACL, Alteryx, and EY proprietary tools, significantly improving data availability for audit engagements (by 30%). ▪ Conducted revenue assurance reviews and identified business process/control weaknesses, providing actionable recommendations for improvement. ▪ Performed digital audits using automated tools, enhancing audit efficiency and effectiveness. ▪ Mentored and coached junior colleagues, resulting in a 25% improvement in their data analytics proficiency. ▪ Successfully extracted data from 10+ different ERP systems (SAP, Sage, Microsoft Dynamics, Oracle Financials, etc.).
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Bluechip Technologies Limited | Jun 2022 - Nov 2022

Senior Data Analyst II

▪ Developed and automated ETL pipelines on Big Data Interface (BDI) and BI systems, supporting critical business decisions. ▪ Created and automated daily, weekly, and monthly KPI reports, enabling data-driven decision-making for top executives. ▪ Leveraged big data technologies (Hadoop, Hive) to process and analyze large datasets. ▪ Designed and developed product performance dashboards and themes for digital channels (Alat and Wema Bank CLM). ▪ Collaborated with the service desk to reduce customer complaint resolution time by 20% and improve customer satisfaction. ▪ Maintained a 24/7 Service Level Agreement (SLA) for Network Management System (NMS) support, achieving a 95% adherence rate.

Octave Analytics & Insights Limited | Sep 2018 - May 2022

Senior Data Analyst

▪ Translated complex data into compelling narratives and actionable insights for clients using analytical and BI tools. ▪ Created and updated campaign strategies and tactical plans to achieve product and marketing objectives. ▪ Analyzed large transactional banking datasets to determine customer value and identify opportunities for growth. ▪ Performed data mining, wrangling, segmentation, and modeling using RDBMS (Oracle SQL, Microsoft SQL, MySQL). ▪ Collaborated with clients and stakeholders to understand their needs and deliver tailored data-driven solutions. ▪ Implemented new technologies to improve service efficiency and client satisfaction by 20%.

Nairtime Nigeria Limited | Feb 2016 - Aug 2018

Business Intelligence Developer

▪ Managed the Enterprise Data Warehouse, performing data warehouse/BI administration using Oracle SQL, PL/SQL, and OBIEE. ▪ Implemented process improvements, including performance tuning and workflow optimization. ▪ Developed data models for the data warehouse and contributed to project health assessment. ▪ Troubleshot and resolved data and data warehouse related issues. ▪ Implemented daily database and repository backups, ensuring data integrity and security. ▪ Designed ETL process flows, reducing data processing time by 30% and improving data quality.

My Education

Take a look at my formal education

Masters in Information ManagementAhmadu Bello University | 2025
BSc in Computer ScienceAjayi Crowther University | 2019
HND in Computer ScienceThe Federal Polytechnic Ede | 2014

About Me

Taiwo Afolayan

Experienced Data Analyst with a demonstrated history of working in the telecom, insurance, FMCG, Consulting, accounting and banking industry.

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