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Jownao/README.md

Hello, World! Welcome 🚀

Hi, I'm Johnny, a Data Engineer and Analyst from Brazil 🌎 with a passion for building practical, data-driven solutions. With a background in Computer Science and a focus on BI, Big Data, and AI, I specialize in data analysis, ETL pipeline development, and data engineering.

This is where I build and share open-source projects using Python, SQL, and modern DataOps practices. Feel free to explore and get in touch!

Featured Projects

  • ETL Pipeline: An ETL pipeline to transform financial data from JSON to Parquet using Python and DuckDB.
  • CRM & Sales System: A CRM and Sales application built with Streamlit and PostgreSQL, featuring data validation and storage.
  • Sales CRUD with API: A scalable Sales CRUD system with a robust API, designed for efficiency and performance.

📊 GitHub Stats

💻 Tech Stack

Python JavaScript Postgres MySQL Oracle SQLite SQLAlchemy Pandas dbt Pandera Tableau Power BI Streamlit FastAPI Pydantic Docker AWS Visual Studio Code Git Briefer MkDocs Render Selenium

🌱 Community Contributions

I actively contribute to the open-source community by sharing practical data solutions. My goal is to help other professionals discover valuable insights and streamline their data operations.

Pinned Loading

  1. ETL_pipeline_json_to_csv_parquet ETL_pipeline_json_to_csv_parquet Public

    Este projeto tem como objetivo criar um pipeline ETL (Extract, Transform, Load) que lê arquivos JSON, realiza um cálculo de total e carrega os dados transformados em arquivos CSV ou Parquet, ou em …

    Python

  2. crudProjectAPI crudProjectAPI Public

    Este projeto é um sistema de CRUD desenvolvido com uma arquitetura robusta utilizando várias ferramentas com o objetivo de criar uma aplicação eficiente e escalável para gestão de dados em um banco…

    Python

  3. genai_streamlit genai_streamlit Public

    Este sistema é uma aplicação desenvolvida para gerenciar e validar vendas de forma simples e eficiente. A solução oferece um frontend interativo para inserção de dados de vendas e validação robusta…

    Python

  4. tweet_polarity_analysis tweet_polarity_analysis Public

    Forked from adolfoguimaraes/tweet_polarity_analysis

    Análises utilizadas para treino dos modelos Naive Bayes, SVM e Decision Three no meu Trabalho de Conclusão de Curso na Universidade Unit

    Jupyter Notebook

  5. Jownao.github.io Jownao.github.io Public

    Primeiro site que estou desenvolvendo

    JavaScript 1

  6. TelegramBotAPI_jownao TelegramBotAPI_jownao Public

    Bot do telegram que desenvolvi utilizando python .

    Python