Chigozie Uba

Data Analyst with nearly 2 years of experience turning sales data into decisions. I clean, model and visualise data in Excel, Power BI, SQL and Python, and my reporting has helped grow sales by up to 15% and cut manual work by 40%. I build star-schema data models and DAX measures in Power BI, analyse data in Python (pandas, Jupyter), and use AI tools such as ChatGPT and Claude to work faster. My Pharmacy degree trained me in precision and quality control.

Sales Analyst - Global Trust Consulting - Nigeria

(2025-08 - 2026-05)

• Built interactive Power BI dashboards that helped lift sales performance by 15%.
• Automated data collection from multiple sources, cutting manual processing time by 40%.
• Streamlined data cleaning with Power Query and SQL, boosting report accuracy and efficiency by 35%.
• Used ChatGPT and Claude to speed up SQL queries, Excel formulas, data summaries and reports.
• Tracked key sales metrics and shared regular performance updates with stakeholders.
• Worked with cross-functional teams to turn findings into clear business recommendations.

Sales Analyst - Kiddies Children Store - Nigeria

(2025-01 - 2025-06)

• Created Excel and Power BI reports that improved forecasting and supported a 10% rise in sales.
• Tracked sales by SKU to find the best- and worst-selling clothing types, guiding stock and reorder decisions.
• Found buying patterns and seasonal trends in large sales datasets to guide stock planning.
• Explained results to non-technical teams through simple, clear charts, and kept sales databases accurate.

Data Analyst Intern - KPMG - Remote

(2024-07 - 2024-11)

• Helped build Power BI customer segmentation dashboards used for targeted marketing.
• Cleaned and prepared raw client datasets with advanced Excel, improving data quality.
• Supported analysis and charts for client presentations.

Bachelor of Pharmacy (B.Pharm) - College of Medicine, University of Lagos

High School Diploma - Brilliant Child Secondary School