I'm Jonatas — data eng & software architect from Brazil 🇧🇷, mostly building pipelines, APIs, and tools that try to make sense of messy data. Lately with a lot of LLM in the mix.
- Data pipelines with Airflow + Spark + Delta + dbt (medallion, ELT, the usual)
- Python services & APIs — FastAPI, SQLAlchemy, async patterns
- LLM-powered apps — RAG, document processing, OpenAI / LangChain + vector DBs
- Geospatial stuff with PostGIS, interactive maps, viz with D3 / Matplotlib
Python · Postgres · Docker · GitHub Actions · uv · zsh + tmux · AWS / Databricks
open-source around data engineering, automation, and AI tooling — especially anything that takes a real chunk of pain out of someone's workflow. Drop an issue, open a PR, or just say hi.



