René Klačan
Co-Founder at The Casuals
Slovakia
Summary
🤩
Rockstar🎓
Top SchoolRené Klačan is a seasoned software engineer and founder with 13 years of experience building community-driven web platforms and developer tools from Slovakia. He co-founded multiple ventures—including FirstLook.gg and AoE4 World—where he blends product instincts with hands-on engineering to build player-facing APIs, analytics, and moderation tools that scale large gaming communities. As former CTO of FetLife, René led engineering across backend systems and test automation while maintaining a pragmatic full-stack coding practice. His open-source contributions span game engine input handling in the widely used Cocos2d-x and test-suite modernizations for Ruby libraries, signaling a comfort with both low-level C++ and Rails ecosystems. Known for turning community needs into reliable software, he also has a track record of launching language-specific tools (Korektor.sk) and integrating playtester workflows to help studios ship with more confidence.
13 years of coding experience
14 years of employment as a software developer
Graduation, General, Graduation, General at Gymnázium Janka Matúšku GalantaBachalor, IT, Bachalor, IT at Brno University of Technology Faculty of Information Technology
English, Slovak
Stackoverflow
450reputation
131kreached
9answers
0questions
Github Skills (28)
c-language10
game-engine10
redis10
game-dev10
testing10
windows10
rspec10
feature-flags10
ruby10
game-development10
cprogramming-language10
cocos2d-x10
test-automation10
setlist9
linux9
Programming languages (22)
Github contributions (5)
fetlife/rollout
Feb 2016 - Feb 2021
Feature flippers.
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:12 releases, 120 commits, 66 PRs in 5 years
Contributions summary:René primarily refactored and updated test specifications within the Ruby on Rails feature flag library. Their commits demonstrate a focus on improving test coverage and migrating from legacy testing syntax ("should") to more modern approaches ("expect"). The user also merged branches and updated dependencies, which involved adapting the testing environment to use fakeredis for development and a real Redis instance for Continuous Integration. Finally, the user removed legacy code and refactored internal components for better maintenance.
redisrolloutrubyfeature-flagsjava
cocos2d/cocos2d-x
May 2013 - Jul 2014
Cocos2d-x is a suite of open-source, cross-platform, game-development tools utilized by millions of developers across the globe. Its core has evolved to serve as the foundation for Cocos Creator 1.x & 2.x.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:53 commits in 1 year 1 month
Contributions summary:René primarily focused on adding and modifying keyboard input functionalities within the Cocos2d-x game engine, indicating a focus on user interaction and platform compatibility. They implemented a `KeyboardDispatcher` class and integrated it with the existing director, CCEGLView, and CCLayer classes to handle keyboard events. Furthermore, the user made changes to the sample code to respect the keyboard support directive. Additionally, they made several minor fixes and improvements to file writing in samples code.
cocos2dmetalc-plus-plusiosdevelopment-tools
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