fernandocelmer user
Python Developer
Funding Links: https://github.com/sponsors/FernandoCelmer
Fernando Celmer · Florianópolis, Brazil · @mercadolibre · 110 followers · 74 stars · 59 repositories · joined November 2022
GitHub Sponsors Profile
Hey, I'm Fernando
Senior Software Engineer at Mercado Libre, based in Florianópolis, Brazil. I've been building and
maintaining open-source projects since 2018 — tools that I needed and didn't exist, so I made them.
Projects I maintain
Owline
A social network where playlists are posts. Users curate playlists, publish
them, and engage through loves, saves, comments, and forks. Built from scratch — React web app, Expo
mobile app (iOS + Android), and a FastAPI backend running on AWS Lambda. Automatic scrobbling detects
what you're listening to from any music player.
🌐 owline.io · GitHub
LinuxProfile
CLI tool for managing Linux user profiles. Switch between terminal configurations, dotfiles,
themes, and package lists with one command. Designed for developers who work across multiple machines
or want reproducible setups. Plugin system for extensibility.
GitHub
Dotflow
Lightweight Python library for building execution pipelines. Define workflows as chains of
steps with retry, parallel execution, cron scheduling, and async support. No heavy dependencies —
just connect functions and let them flow.
PyPI · GitHub
Mkdocs Simple Blog
Blog template for MkDocs — clean, minimal, no bloat. Used by 120+ developers
and forked 13 times. Just write markdown, get a blog.
GitHub
Why sponsor?
These projects are maintained in my free time, outside of my day job. Your sponsorship helps me:
Fix bugs faster — respond to issues and ship patches
Ship new features — especially Owline, which is a full product being built in the open
Keep packages updated — dependency updates, security patches, Python version support
Write better docs — tutorials, examples, and guides
Thank you
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