Marcin Szwarc
Inżynier Ds. Oprogramowania at Wikimedia Foundation
Poznan, Greater Poland Voivodeship
Summary
👤
Senior🎓
Top SchoolMarcin Szwarc is a software engineer with nine years of experience who combines professional work at the Wikimedia Foundation with long-standing volunteer technical stewardship of Wikipedia, including localization contributions to the core MediaWiki project. He specializes in making complex systems usable and resilient—translating and localizing UI elements for Polish users, automating editor workflows with helpful scripts, and mitigating malicious activity at scale. Comfortable across open-source and institutional environments, he has built practical tooling such as a .NET processor for nonprofit banking reports and contributed features and fixes to the Renode embedded simulator. Based in Poznań, he pairs formal engineering training (Magister in Computer Software Engineering) with a hands-on approach to community-facing infrastructure and event organization, including co-organizing Wikimania 2024.
9 years of coding experience
Magister inżynier (Mgr inż.), Computer Software Engineering, Magister inżynier (Mgr inż.), Computer Software Engineering at Politechnika Poznańska
Polish, English
Github Skills (5)
polka10
php10
localization10
mediawiki10
wikipedia9
Programming languages (13)
Github contributions (5)
wikimedia/mediawiki
Oct 2022 - Oct 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:
Localization / Internationalization Specialist
Localization / Internationalization SpecialistContributions:1 commit in 1 day
Contributions summary:Marcin's primary contribution focused on translating various special page names and image options within the MediaWiki software. They translated special page names and image options into Polish, updating the `MessagesPl.php` file to reflect these changes. This demonstrates a focus on adapting the MediaWiki platform for different language users by providing localized user interface elements. The user consistently worked on the Polish localization, modifying the alias names for special pages and magic words.
collaborative-editingmediawikiphpwikiwikipedia
marcinszwarc/abusefilter-analyzer
Feb 2024 - Apr 2026
Helps to analyze what MediaWiki AbuseFilter rules fired off the filter in a given edit
Contributions:9 PRs, 114 pushes, 22 branches in 2 years 2 months
mediawiki
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