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My Data Portfolio

👋 About

Welcome to my data portfolio! I'm a data professional with experience in building data pipelines, data warehousing, data reporting and analytics solutions. This repository showcases some (but not all) of my knowledge in Business Intelligence, Data Analysis, and Data Engineering.

🗂️ Technical Assessment Projects

Projects developed as part of technical assessment processes, demonstrating comprehensive problem-solving abilities and technical skills.

1. Video Game Sales 🎮

Data Analyst position at a food delivery platform, developed in September 2024

A project that analyzes video game sales data to evaluate gaming partnership opportunities.

Features

  • Data extraction automation
  • Data preparation and cleaning
  • Regional sales analysis
  • Genre market share calculation
  • Platform performance tracking

Tech Stack

  • Python
  • DuckDB
  • Prefect
  • Pandas
  • wget
  • Jupyter Notebook

Skills Applied

  • Data/file extraction through HTTPS protocol
  • Data preparation
  • SQL analysis
  • Data workflow orchestration

2. School Supplies Market📚

Analytics Engineer position at a Brazilian e-commerce company, developed in March 2024

A data preparation project focusing on standardizing and integrating e-commerce school supplies sales data for planning purposes.

Features

  • Automated header validation system
  • Data quality analysis and standardization
  • SQLite database implementation

Tech Stack

  • Python
  • SQLite
  • Pandas
  • Google Sheets

Skills Applied

  • Data preparation and cleaning
  • Database operations
  • ETL processes
  • Business analytics

💡 Code Snippets & Practice Projects

Smaller-scale projects and code examples showcasing specific technical skills and tools implementation.

1. Cryptocurrencies Quotes 💰

An EL (Extract, Load) pipeline that fetches market data (price, volume, market cap) for BTC, ETH, and LTC from CoinMarketCap API and stores it in DuckDB.

Features

  • Automated data extraction from CoinMarketCap API
  • Error handling and logging system
  • Data storage in DuckDB database

Tech Stack

  • Python 3.9+
  • dlt
  • DuckDB
  • CoinMarketCap API

Skills Applied

  • API integration
  • Data pipeline development
  • SQL querying

This portfolio is actively maintained and updated with new projects and improvements.