Oluwaseyi Odeyemi

Data Analyst

Based in Ibadan, Nigeria

About

I’m Odeyemi Oluwaseyi, a data analyst with a strong interest in transforming raw data into insights that drive real-world results. My journey began as an operations manager, where one dashboard changed how I viewed data. Since then, I’ve built skills in SQL, Excel, and Power BI, completed the Google Data Analytics Certificate, and created projects that uncover trends in sales, customer behavior, and public health. I hold a Bachelor's degree in Public Health and use my background to bring a unique perspective to both business and health data. Whether it’s boosting a brand’s growth or revealing patterns in mental health, I believe data should solve problems and create impact.

Skills

Projects

Uncovering the Hidden Links: Depression, Lifestyle, and Socioeconomic Realities in a Public Health Dataset Using SQL

This project leverages SQL to analyze a synthetic public health dataset focused on understanding the multifaceted nature of depression. Through detailed exploration of lifestyle behaviors (such as smoking, alcohol consumption, and physical activity) and socioeconomic factors (like income, education,

Driving Sales Growth and Customer Retention with Power BI: A Data-Driven Analysis of Òsó Rere

This Power BI project analyzes Òsó Rere’s sales from June 2024 to May 2025, revealing top products, key sales channels like WhatsApp, and strong performance metrics, a 39% profit margin and 32.86% repeat customer rate. The insights guide smarter decisions for growth through targeted ads.

Massachusetts Hospital Insights: A Decade of Data on Admissions, Costs & Coverage

Analyzed 10+ years of synthetic data from Massachusetts General Hospital to uncover trends in patient demographics, insurance coverage, and care costs. Key findings included high uninsured rates (48.7%) and significant out-of-pocket expenses. The project offers recommendations to improve healthcare.

Visualizing Vehicle Trends in Nigeria: A Power BI Project

Built a car market dashboard using data scraped from Cars45 to explore trends in pricing, vehicle conditions, and consumer preferences across Nigeria. Key insights revealed Toyota as the most popular brand, automatic as the dominant transmission type (94%), and Lagos with the highest vehicle reg.

Experience

2022 - 2024

Operations Manager at Perfetti Van Melle

• Analyzed daily sales, inventory, and customer data using Excel to optimize stock levels and reduce overstock • Created weekly and monthly performance dashboards, identifying top-performing products and underperforming SKUs • Leveraged customer transaction data to design personalized promotions, leading to a 10% increase in repeat purchases • Coordinated data-informed staffing schedules that reduced overtime costs • Hired and trained 8 employees, contributing to improved team efficiency and customer satisfaction

Education

2017 - 2021

BSc Public Health at Adeleke University, Ede

Relevant Courses: Probability and Statistics, Epidemiology.

2024 - Present

MPH Field Epidemiology at University of Ibadan

Relevant Courses: Data Management in Health Sciences, Modelling in Epidemiology