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NjiruDennis/README.md

LinkedIn

👋 Hi, I'm Dennis Njiru Aningu — a self-taught Data Analyst passionate about uncovering insights from data and helping teams make smarter decisions.

🔍 I specialize in:

  • Writing complex SQL queries (Snowflake, Metabase)
  • Building interactive dashboards (Power BI, Tableau)
  • Automating reports and workflows (Excel, Python)
  • Cleaning and transforming data for analysis (ETL)

📊 I enjoy solving real-world problems with data and creating dashboards that tell compelling stories. I'm always looking for ways to optimize reporting, improve decision-making, and make data more accessible.

🎯 On GitHub, you’ll find:

  • Sample dashboards and SQL projects
  • Python scripts for data cleaning and analysis
  • Personal learning projects as I grow in Power BI and Python

📚 Currently learning: Advanced Power BI & Python for Data Analysis 💬 Let’s connect or collaborate — always open to learning and sharing!

Skills and Tools

MySQL
MySQL 		PostgreSQL
PostgreSQL 		Python
Python 		Pandas
Pandas 		NumPy
NumPy 		Jupyter
Jupyter 		Power BI
Power BI 		Tableau
Tableau 		Excel
Excel 		Snowflake
Snowflake 		Metabase
Metabase

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  1. retail-sales-bi retail-sales-bi Public

    Retail Sales Performance BI Dashboard using SQL star schema, Python EDA and Tableau

    Jupyter Notebook

  2. healthcare-claims-analytics healthcare-claims-analytics Public

    End-to-end healthcare insurance claims analysis using SQL, Python and Tableau

    Jupyter Notebook 1

  3. HR-Dashboard_Report-MySQL-PowerBI HR-Dashboard_Report-MySQL-PowerBI Public

    1

  4. HR-Analytics-Dashboard-Power-Bi-Project HR-Analytics-Dashboard-Power-Bi-Project Public

    1

  5. Data-Cleaning-Python-Marketing-Campaigns Data-Cleaning-Python-Marketing-Campaigns Public

    Data cleaning pipeline for a messy marketing campaign dataset using Python, Pandas, and NumPy

    Jupyter Notebook