Renato C
Senior Backend Engineer at Cowboy
Brussels, Brussels-Capital, Belgium
Summary
🤩
Rockstar🎓
Top SchoolRenato C is a Senior Backend Engineer with 14 years of experience building high-performance, scalable systems primarily in Ruby and PostgreSQL, with deep secondary expertise in Python, C/C++, PHP and JVM ecosystems. He has led and grown backend teams at AppTweak and now drives backend engineering at Cowboy, delivering resilient microservices and data-driven features across consumer and enterprise products. Renato contributes to notable open-source projects like Mastodon, where his backend work improved language detection and timeline behavior—showing a knack for real-world, user-facing improvements in distributed systems. His career spans fast-moving startups and large platforms (OLX, bomnegócio, UnifiedPost), where he’s routinely focused on performance, availability and pragmatic architecture. Fluent in Portuguese, English and French and based in Brussels after roots in Rio de Janeiro, he brings both international collaboration experience and hands-on systems craftsmanship.
14 years of coding experience
11 years of employment as a software developer
Bachelor's Degree Computer Science, Bachelor's Degree Computer Science at Universidade Federal do Rio de Janeiro
Portuguese, English, French
Stackoverflow
106reputation
7kreached
6answers
2questions
Github Skills (15)
ruby-rails10
rails10
ruby10
sidekiq9
activitypub8
web-development7
rake6
std6
compiler-errors6
amazon-s36
ruby-on-rails6
dockers5
federated5
microblogging5
docker5
Programming languages (22)
Github contributions (5)
mastodon/mastodon
Oct 2017 - Feb 2020
Your self-hosted, globally interconnected microblogging community
Role in this project:
Backend Developer
Backend DeveloperContributions:47 commits, 51 PRs, 163 comments in 2 years 3 months
Contributions summary:Renato primarily contributed to the backend of the Mastodon project, focusing on improving language detection, fixing bugs, and implementing new features. Their work involved modifying core Ruby files related to language filtering within statuses, fixing nil errors in sidekiq, and addressing issues with oembed. They also worked on features such as controlling the display of local toots in the timeline preview and integrating with external services like emoji-mart.
social-networkwebfingerpixelfedhosteddocker
retromeet/landing
Sep 2024 - May 2026
This is the landing page of RetroMeet, an open-source dating app
Contributions:6 reviews, 2 PRs, 34 pushes in 1 year 8 months
datingretromeet
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