Maruffuzzman Tanvir - Business Analyst | ContraWork by Maruffuzzman Tanvir
Maruffuzzman Tanvir

Maruffuzzman Tanvir

Data Analyst, Open to Junior & Freelance Roles

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Maruffuzzman is ready for their next project!

Followed by Gustavo D and GALLERY L

Gopalganj, Bangladesh

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Gopalganj, Bangladesh

Cover image for The Leaky Bucket: Diagnosing SaaS Churn & Growth
The Leaky Bucket: Diagnosing SaaS Churn & Growth
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Cover image for F1 Championship Metric Comparison: Vettel vs Verstappen
F1 Championship Metric Comparison: Vettel vs Verstappen
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F1 Data Analysis: Vettel vs Verstappen — SQL & Power BI A SQL + Power BI comparison of Sebastian Vettel's (2010–2013) and Max Verstappen's (2021–2024) four-title runs at Red Bull Racing — same team, different eras, very different paths to the top. Built on the Ergast F1 database: 14 SQL queries across 5 categories (dominance, race execution, consistency, teammate benchmarking), visualized in a 5-page Power BI dashboard. Key finding: Vettel converted a higher share of available points on average (69.05% vs Verstappen's 63.28%), despite winning fewer races overall. Tech Stack SQL Server · DBeaver · Power BI · Excel Full project: github.com/MZT49/four-time-champions-vettel-vs-verstappen
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Cover image for Olist-ecommerce-analysis
Olist-ecommerce-analysis
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