j
jazzyrain

Olalekan Ajadi

@jazzyrain

Data Analyst, Expert in Excel, SQL and Power BI Dashboards

Nigeria
Inglese, Yoruba
Alcune informazioni sono riportate in lingua inglese.
Chi sono
I am a Data Analyst with a background in Economics, dedicated to turning raw, messy datasets into structured, actionable insights. I specialize in end-to-end data projects—from deep-cleaning and relational database design in SQL to building interactive, high-impact dashboards in Power BI and Tableau. Whether you need to fix a broken spreadsheet or visualize complex retail and financial trends, I ensure your data is accurate, consistent, and easy to understand. My mission is to provide the reliable data foundation you need to make smarter business decisions.... Continua a leggere

Competenze

j
jazzyrain
Olalekan Ajadi
offline • 

Consulta i miei servizi

Pulizia dei dati
I will clean, organize, and prepare your data for analysis
A partire da15 USD / progettoMaggiori dettagli

Portfolio

Esperienza lavorativa

Data_Science Nigeria

Data Anlayst

Data Science Nigeria • Freelance

Aug 2025 - Dec 2025 • 4 mos

Specialization: Data Cleaning, ETL Processes, and Business Intelligence (BI) I provide end-to-end data solutions for SMEs and corporate clients, focusing on transforming fragmented raw data into structured, high-integrity databases ready for strategic analysis. Oil & Gas Operational Excellence: Developed a multi-location performance dashboard for a Nigerian energy firm, tracking Units Per Hour (UPH) and Cost Per Unit (CPU). Identified a 12% efficiency gap by correlating staff training hours with production output, leading to a revised workforce development strategy. Retail Supply Chain Optimization: Architected a relational database for a retail chain to manage inventory across multiple branches. Automated the data cleaning process for 50,000+ rows of monthly sales data, reducing manual reporting time by 70%.