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15 followers · 19 following

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Achievement: Pull Shark

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Achievement: Pull Shark

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Jownao/README.md

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👋 About Me

class JohnnyCosta:
    role       = ["Data Engineer", "Data Analyst"]
    location   = "Aracaju, Brazil 🌎"
    education  = "B.Sc. Computer Science + 2x Postgraduate (Data Engineering & Software Engineering)"
    languages  = {"Portuguese": "Native", "English": "B2"}
    currently  = "Building data pipelines on GCP | Learning AWS & Databricks"
    open_to    = "Remote opportunities with US-based companies"

    stack = {
        "pipelines"    : ["Python", "SQL", "BigQuery", "GCP", "AWS"],
        "analytics"    : ["Power BI", "Looker Studio", "Streamlit", "DAX", "DuckDB"],
        "engineering"  : ["ETL/ELT", "Docker", "PostgreSQL", "Spark", "dbt"],
        "ml"           : ["Scikit-learn", "Pandas", "Polars"],
    }

🚀 Featured Projects

⚙️ ETL Pipeline — JSON to Parquet

End-to-end ETL pipeline transforming financial data from JSON to Parquet using Python and DuckDB. Optimized for performance and storage efficiency.

📊 CRM & Sales System

CRM and Sales application built with Streamlit and PostgreSQL, featuring data validation, storage, and interactive dashboards.

🔌 Sales CRUD with API

Scalable Sales CRUD system with a robust FastAPI backend, designed for efficiency and performance in production environments.

🔜 More coming soon...

Currently working on new open-source projects involving GCP, Databricks and AWS. Stay tuned!

🛠️ Tech Stack

Cloud & Data Engineering

GCP BigQuery AWS Azure Docker dbt

Languages & Processing

Python SQL JavaScript Pandas DuckDB Selenium

BI & Visualization

Power BI Looker Studio Streamlit Tableau

Databases

PostgreSQL MySQL SQLite Oracle

Frameworks & Tools

FastAPI Pydantic SQLAlchemy Git MkDocs

📊 GitHub Stats

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. linkedin-search-builder linkedin-search-builder Public

    A single-page tool to generate safe boolean search queries for LinkedIn — without hitting the platform's undocumented operator limits.

    HTML 1

  3. 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

  4. 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

  5. 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

  6. Jownao.github.io Jownao.github.io Public

    Primeiro site que estou desenvolvendo

    JavaScript