Open to opportunities

Mamah Celestina

@mamahcelestina

Detail-oriented Data Analyst turning Excel, Power BI, and SQL insights into clearer decisions and operational efficiency.

Nigeria

Message

What I'm looking for

I’m looking for a Data Analyst role where I can deliver accurate reporting and data visualization, strengthen data integrity, and use Excel, Power BI, and SQL to support service operations and business decision-making.

I’m a detail-oriented Data Analyst with a BSc in Statistics from the University of Nigeria. I analyze service-related data, resolve customer inquiries, and translate findings into accurate, decision-ready reports.

In my Alerzo Limited role, I used Microsoft Excel to prepare detailed reports, improving the accuracy and clarity of data presentation by 50%. I also support service operations through comprehensive documentation and record keeping that strengthens data integrity and accessibility.

Experience

Work history, roles, and key accomplishments

Data Entry Clerk / Sales Accountant

Alerzo Limited

Nov 2024 - Jan 2026 (1 year 2 months)

Analyzed basic service-related data to identify trends and support decision-making. Prepared detailed Excel reports, improving accuracy and clarity of data presentation by 50%, and maintained documentation and record keeping to ensure data integrity.

Excel Data Analysis Data Reporting Database Management Data Integrity Record keeping Documentation Service Support

Logistics & Transportation Analytics

Personal Project

Tracked and analyzed revenue across load types, customers, and destinations, and performed fleet maintenance cost analysis across truck brands and model years. Built a driver performance scoring system and conducted logistics network analysis to derive a profit margin for business decision-making.

Power Query Power BI Data Visualization Data Reporting Logistics Analytics