Ahsan Chowdhury

Data Analyst | Excel • SQL • Power BI • Python

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About Me

Hi, I'm Ahsan Chowdhury, a Data Analyst based in Bangladesh.

I enjoy working with data to answer questions, identify patterns and present information in a way that's easy to understand. My primary tools are Excel, SQL and Power BI. I'm continuing to expand my knowledge of Python through practical projects.

This portfolio showcases the projects I've built, the skills I'm developing and the work I enjoy creating as I continue growing in data analytics.

🌐 Portfolio
https://github.com/ahsan-data/portfolio

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Technical Skills

Data Analysis

• Excel
• SQL
• Power BI
• Python

Excel

• Power Query
• Power Pivot
• Pivot Tables
• XLOOKUP
• INDEX & MATCH
• Data Cleaning
• Charts

SQL

• Data Cleaning
• Joins
• Aggregate Functions
• Window Functions
• Common Table Expressions (CTEs)
• Views

Power BI

• Data Modeling
• DAX
• Power Query
• Interactive Dashboards
• KPI Reporting

Python

• Pandas
• NumPy
• Matplotlib

Version Control

• Git
• GitHub

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Featured Projects

Sales Performance Dashboard

Tools

Power BI • Excel

Highlights

• Analyzed sales trends over time
• Compared regional performance
• Identified top-performing products
• Built an interactive dashboard with KPI cards and filters

Repository

https://github.com/ahsanxdata360

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Customer Segmentation Analysis

Tools

SQL • Excel

Highlights

• Cleaned customer data
• Grouped customers based on purchasing behavior
• Identified high-value customer segments

Repository

https://github.com/ahsanxdata360

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HR Attrition Analysis

Tools

Power BI • SQL • Excel

Highlights

• Explored employee attrition patterns
• Compared departments and job roles
• Created visual reports to support analysis

Repository

https://github.com/ahsan-data

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Currently Learning

• Advanced SQL
• DAX
• Python for Data Analysis
• Statistics
• Data Visualization Best Practices

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Certifications

Currently working toward industry-recognized certifications while continuing to build practical data analytics projects.

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Recent Projects

• Sales Performance Dashboard
• HR Attrition Analysis
• Customer Segmentation
• Data Cleaning with SQL

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What You'll Find Here

• Data analysis projects
• SQL practice and case studies
• Power BI dashboards
• Excel solutions
• Python notebooks
• Portfolio projects

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Let's Connect

Portfolio
https://github.com/ahsan-data/portfolio

LinkedIn
https://www.linkedin.com/in/ahsanxdata/

GitHub
https://github.com/ahsan-data

Email
ahsanxdata@gmail.com

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Thank you for visiting my portfolio.

I hope the projects shared here provide a clear view of how I approach data analysis. If you'd like to connect or discuss opportunities, feel free to reach out.