Dariusz Rumiński
Creator
West Pomeranian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolDariusz Rumiński is a creator and seasoned software leader with 12 years of experience, currently directing engineering at Delivery Hero while maintaining PHP CS Fixer, a widely used open-source tool for enforcing PHP coding standards. He blends hands-on backend development with senior leadership, having progressed from engineer to Director of Software Engineering and led teams across large PHP ecosystems. An active contributor to major projects like Symfony, Zend Framework and PHPUnit, his niche is meticulous code quality—automating and applying CS fixes that improve readability, portability, and long-term maintainability. He holds an M.Eng. in Computer Science and brings a practical focus on test automation, internationalization, and cross-platform console robustness. Notably, his contributions often target subtle but high-impact fixes (license headers, phpdoc alignment, quoting consistency) that keep large frameworks healthy and easier to evolve.
13 years of coding experience
12 years of employment as a software developer
Master of Engineering (M.Eng.) Computer Science and Information Technology with major in IT Project Management, Master of Engineering (M.Eng.) Computer Science and Information Technology with major in IT Project Management at West Pomeranian University of Technology in Szczecin
Polish, English
Stackoverflow
544reputation
32kreached
15answers
0questions
Github Skills (76)
dependency-management10
reformatting10
url-routing10
testing10
windows10
enforcement10
phpunit10
security10
symfony-ux10
i18n-js10
coding-style10
php-cs-fixer10
cakephp10
symfony-component10
react-components10
Programming languages (22)
Github contributions (5)
php-coveralls/php-coveralls
Apr 2015 - Jan 2023
PHP client library for Coveralls API.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:21 releases, 87 reviews, 92 commits in 7 years 10 months
Contributions summary:Dariusz primarily contributed to fixing code style issues and ensuring code quality within the PHP client library. Their work involved refactoring code, correcting formatting, and applying coding standards across various files. They focused on the `src` directory to change the PHP code.
coverallsphp
PHP-CS-Fixer/PHP-CS-Fixer
Jun 2014 - Jan 2023
A tool to automatically fix PHP Coding Standards issues
Role in this project:Back-end Developer
Back-end DeveloperContributions:317 releases, 2759 reviews, 5188 commits in 8 years 8 months
Contributions summary:Dariusz primarily contributed to the codebase by modifying the PHP-CS-Fixer tool, focusing on various aspects. They implemented changes to handle new PHP syntax features, particularly related to generics, attributes, and union types. The user also added code to ensure more comprehensive testing and address identified bugs, indicating a focus on code quality and language feature compatibility.
phpstatic-analysiscode-stylecode-standards
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