Joseph Juma

Data Analyst · Business Intelligence & Reporting

Nairobi, Nairobi County, Kenya

@joseph_juma

LinkedIn GitHub

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About

Data analyst with over a year of experience in building Power BI dashboards, automating reporting workflows, and cleaning and analyzing data using SQL, Python, and Excel. Focused on turning raw data into clear business insights and decision-ready reports.

Experience

Freelance Data & Reporting Analyst

Self-Employed

Jul 2024 – Present
Junior Data Analyst Intern

Independent Electoral and Boundaries Commission

Jun 2025 – Jun 2026

Education

Bachelor of Science in Computer Science (Data Science and Analytics)

Karatina University

Computer Science · 2021 – 2025

Skills

<3 months

SQL Git MySQL NumPy Excel GitHub Python Pandas Tableau Power BI PostgreSQL SQL Server Power Query Azure Storage Microsoft Azure Azure Data Factory Azure SQL Database

Languages

Fluent

English Speak · Read

Projects

Customer Churn Analysis & Predictive Insights ↗

Python, Pandas, SQL

Analyzed customer transaction and demographic data to identify churn factors, performed EDA, built visualizations, and delivered retention recommendations.
Sales Performance Dashboard & Business Intelligence Analysis ↗

Power BI, SQL, Power Query, Excel

Built an interactive dashboard to analyze sales performance, revenue trends, customer behavior, and regional performance. Created KPIs and reduced manual reporting time by approximately 70%.

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