I'm Jonatas Leon, a 🇧🇷 Data Engineer & Software Architect with over 10 years of experience turning complex ideas into scalable systems. I specialize in designing and building data pipelines, intelligent APIs, and LLM-powered applications that make sense of messy, unstructured information.
- 🧠 Data Engineering: Designing robust data architectures, from ETL/ELT pipelines to Medallion Architectures with tools like Airflow, Spark, Delta Lake, dbt, and PostgreSQL.
- 🤖 AI/LLM Integration: Prototyping and deploying applications using OpenAI, LangChain, and vector databases, with a focus on retrieval-augmented generation (RAG) and intelligent document processing.
- ⚙️ Python Power: My go-to for back-end logic, automation, and performance—leveraging FastAPI, SQLAlchemy, and async patterns.
- 📊 Data Visualization & GIS: Crafting rich insights using PostGIS, D3.js, Matplotlib, and interactive maps.
- ☁️ Dev & Cloud Stack: Proficient with Docker, GitHub Actions, uv, Zsh/tmux workflows, and cloud integrations (AWS, Databricks).
I'm always open to collaborating with forward-thinking people building real-world impact through data, automation, and AI.
📫 Reach out anytime: me@jonatasleon.com
🌐 Website: jonatasleon.com