Željko Filipin
Senior Software Engineer In Test at Wikimedia Foundation
Zagreb, Croatia
Summary
👤
Senior🎓
Top SchoolŽeljko Filipin is a Senior Software Engineer in Test based in Zagreb with 17 years of hands-on experience building and maintaining robust test automation for large-scale web platforms. He has been a long-term contributor to the Wikimedia Foundation, where he shapes Selenium/WebdriverIO test suites for MediaWiki—improving test reliability, adapting to UI changes, and enhancing reporting and environments for one of the world’s most visited open-source projects. Proficient in JavaScript and Ruby, he combines deep QA instincts with practical engineering skills to debug brittle tests and add resilient automation coverage. A former contractor and founder of a small software practice, he brings both independent problem-solving and cross-team collaboration to complex, globally distributed codebases.
17 years of coding experience
16 years of employment as a software developer
Gimnazija DaruvarTehničko veleučilište u ZagrebuUniversity of Zagreb/Sveuciliste u Zagrebu
Croatian, English
Stackoverflow
56,862reputation
3.9mreached
405answers
55questions
rubygems
top-5%
selenium
top-5%
firefox
top-5%
git
top-5%
javascript
top-5%
ruby
top-1%
Github Skills (30)
mediawiki10
javascript10
webdriverio10
selenium10
testing10
selenium-ide10
ruby10
mochajs10
jenkins10
wikipedia9
rubygems9
git9
github9
filename9
stacktrace9
Programming languages (9)
Github contributions (5)
wikimedia/mediawiki
Jun 2014 - Dec 2022
🌻 The collaborative editing software that runs Wikipedia. Mirror from https://gerrit.wikimedia.org/g/mediawiki/core. See https://mediawiki.org/wiki/Developer_access for contributing.
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:113 commits in 8 years 7 months
Contributions summary:Željko primarily worked on the Selenium test suite for the MediaWiki project. Their contributions involved debugging and fixing existing tests, as well as adding new functionality. This included addressing issues related to WebdriverIO API changes, updating test configurations, and modifying test logic to handle changes in the application's UI and behavior. The user also made improvements to the test environment and reporting.
wikimediaphpwikipediacollaborative-editingruns
zeljkofilipin/pacman
Oct 2019 - Mar 2025
Automating Google Pacman
Contributions:18 PRs, 19 pushes, 2 branches in 5 years 6 months
pythongamegooglepacmanruby
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