Esther Raphael

Open to opportunities

Junior Data Analyst / Data Entry Specialist

I turn operational data into accurate reports, dashboards, and actionable business insights.

NigeriaJunior Data Analyst / Data Entry Specialist at Health Implementation Program (661 NAFH)

About

At Health Implementation Program (661 NAFH), I manage, validate, and maintain large datasets with 99%+ data-entry accuracy. I use Excel-based checks and SQL queries to reduce errors and support reliable departmental reporting. I've built Power BI KPI dashboards, automated Excel reports that reduced manual reporting time by about 30%, and performed exploratory analysis to identify patterns and anomalies. I also apply Python, R, SQL, and basic machine learning to improve reporting and decision-making.

Experience

Junior Data Analyst / Data Entry Specialist
Optimized, managed, validated, and maintained large datasets, ensuring 99%+ accuracy in data entry across multiple departmental databases. Designed Excel dashboards and automated reports, reducing manual reporting time by ~30%, and built interactive Power BI dashboards for management.
ExcelSQLPower BIData CleaningData ValidationDashboard DesignPivot TablesDAXData ModelingExploratory Data AnalysisMachine LearningregressionClassificationPythonRData Governance

Education

Ahmadu Bello University
Currently pursuing a B.Sc. in Computer Science, with relevant coursework in database systems, algorithms, statistics, software engineering, and artificial intelligence.
NIIT
Completed a Diploma in Data Analytics in 2025, covering advanced Excel, statistical analysis, R programming, machine learning, SQL, and Power BI.
Completed a Diploma in Data Analytics in 2025, covering advanced Excel, statistical analysis, R programming, machine learning, SQL, and Power BI.

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About

Experience

Junior Data Analyst / Data Entry Specialist

Optimized, managed, validated, and maintained large datasets, ensuring 99%+ accuracy in data entry across multiple departmental databases. Designed Excel dashboards and automated reports, reducing manual reporting time by ~30%, and built interactive Power BI dashboards for management.

ExcelSQLPower BIData CleaningData ValidationDashboard DesignPivot TablesDAXData ModelingExploratory Data AnalysisMachine LearningregressionClassificationPythonRData Governance

Education

Ahmadu Bello University

Currently pursuing a B.Sc. in Computer Science, with relevant coursework in database systems, algorithms, statistics, software engineering, and artificial intelligence.

NIIT

Completed a Diploma in Data Analytics in 2025, covering advanced Excel, statistical analysis, R programming, machine learning, SQL, and Power BI.

About

Experience

Junior Data Analyst / Data Entry Specialist

Education

Ahmadu Bello University

NIIT

About

Experience

Junior Data Analyst / Data Entry Specialist

Education

Ahmadu Bello University

NIIT

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