Poland
Top 100 Open Source Contributors in Poland
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Poland
Przemysław Kłys
Working on #Windows, #ActiveDirectory, #MSExchange, #PowerShell, #Office365 in random order. I like Battlefield (PS5, MadBoyEvo, I Kill You), Fallout, and Civ.
Poland, MikolowBreakdown
PolandBreakdown
Krakow, PolandBreakdown
Warsaw, PolandBreakdown

Adam Zieliński
I built WordPress Playground. WordPress Core committer. I like bouldering and improv comedy 🙂
Wrocław, PolandBreakdown

Mateusz "Serafin" Gajewski
Software Janitor
PolandBreakdown
Poland, LowiczBreakdown

Michał Pierzchała
Expert React Native dev at @callstack. Team Jest 🃏 and React Native Community ⚛️.
Krakow/Wroclaw, PolandBreakdown

Robert Pająk
@open-telemetry Go and Specification maintainer. Author of @goyek.
Poland, CracowBreakdown
Gdańsk, PolandBreakdown

Stefan Maroń
Microsoft Dynamics 365 Business Central Developer | Microsoft MVP
Olesno, PolandBreakdown
PolandBreakdown

Spicy Marinara
Saucy.
PolandBreakdown

Bartosz Kaszubowski
Full Stack Developer & UI/UX Designer. TS, JS, Swift, Rust & any form of React.
Gdańsk, PolandBreakdown

Slawomir Jaranowski
Java Developer, Open Source fun @apache Maven PMC Member
Poland, PoznańBreakdown

Lukasz Ostrowski
Principal Developer @saleor
Bielsko-Biała, PolandBreakdown

Kacper Włodarczyk
Senior AI Engineer & OSS Lead @Vstorm · Building production agentic AI in the Pydantic-AI ecosystem
PolandBreakdown

Tomek Drwięga
tomusdrw.eth
PolandBreakdown

Mateusz Konieczny
A map enthusiast.
Kraków, PolandBreakdown

Damian Legawiec
I build commerce infra at @spree
Warsaw, PolandBreakdown

Michael Murphy
System76 engineer and Pop!_OS maintainer working on COSMIC. Develops software for the Linux desktop in Rust.
Wroclaw, PolandBreakdown

Alies Lapatsin
clean coder (and code cleaner) ex @lptn
PolandBreakdown

Bartosz Fenski
*nix sysadmin
Bielsko-Biała/PolandBreakdown
Wrocław, PolandBreakdown
Poland, KrakowBreakdown

Tomasz Chabora
Godot Master Race
PolandBreakdown

Shirone
Full-stack dev (TypeScript) · Electron/Tauri desktop apps · shirone.dev
PolandBreakdown

Michał Górny
@Gentoo developer since 2010. Maintaining Python packages, LLVM, Xfce. Open-source enthusiast. Most of my projects are now in @projg2 org. I'm a cat. #NoAI.
Greater Poland, PLBreakdown
Krakow, PolandBreakdown

Hubert
Software Engineer at @ChainSafe
Poznań, PolandBreakdown

Andrzej Głuszak
That bird is a capercaillie (Głuszec in Polish)
PolandBreakdown
Kraków, PolandBreakdown

Prince Canuma
MLOps | LLMs | VLMs | Audio LMs | Ex - ML Research Engineer @arcee-ai
PolandBreakdown
Gdynia, PolandBreakdown

José Valim
Creator of @elixir-lang. Chief Adoption Officer at @dashbitco, where we build @tidewave-ai and @livebook-dev.
Kraków, PolandBreakdown
PolandBreakdown

Kamil Król
Founder & Developer of KP_Code Digital System | Building web, software and digital products | Accessibility • QA • Performance
PolandBreakdown

Piotr Kowalski
Senior Software Engineer | Trainer | Frontend & AI
Warsaw, PolandBreakdown
PolandBreakdown

marcinbojko
https://bojko.dev
PolandBreakdown

Tomasz Sapeta
Software Engineer at @Expo 🪄 Previously at @software-mansion
Kraków, PolandBreakdown
Olsztyn, PolandBreakdown

Mateusz Łopaciński
Software Engineer @software-mansion with 4 years of working experience, Open Source contributor
Cracow, PolandBreakdown

Szymon Chmal
Senior Software Magician at @callstack | Rozenite, Harness, Voltra | Microsoft MVP in Web Development.
Poland, ToruńBreakdown

Valery Piashchynski
Go/Python/Rust Software Engineer
Poland, Wrocław Breakdown
Wrocław, PolandBreakdown
Katowice, PolandBreakdown

Kamil Jarosz
Software Engineer and PhD student in Computer Science
Krakow, PolandBreakdown
Warsaw, PolandBreakdown

Dominik Lubański
JavaScript passionate. Hybrids library author. Piano player. At work, Frontend Architect.
Warsaw, PolandBreakdown

Egor Bogatov
I work on .NET JIT compiler 🚀 at Microsoft
Warsaw, PolandBreakdown

Jakub Piasecki
React Native Open Source @software-mansion
Kraków, PolandBreakdown
Kraków, PolandBreakdown

Piotr P. Karwasz
Available for Open Source contract work
Gdynia, PolandBreakdown

Maciej Szulik
Kubernout by day, Pythonista by night, open source enthusiast and amateur photographer.
PolandBreakdown

Tom Kowalczyk
Thick face, black heart practitioner Building software, sharing knowledge, always learning ⚡ #software 🕵🏻🏻 #research 🔑 #security
PolandBreakdown

Franciszek Job
Software Engineer at @software-mansion working on Starkware developer tools MS CS @AGH Member of @MLCIL
Cracow, PolandBreakdown
PolandBreakdown

Mateusz Nowak
👨💻 Software Craftsman @ AxonIQ | Domain-Driven Design | Event Sourcing | EventStorming | Event Modeling | Kotlin | Java | C# .NET | Ruby | Node.js
Wrocław, PolandBreakdown

Łukasz Holeczek
I create open-source solutions that millions of people use every day. Creator of @coreui
PolandBreakdown

Andrzej Stencel
Senior Software Engineer @Elastic, maintainer of OpenTelemetry Collector Contrib
PolandBreakdown

Adam Gąsowski
PHP & Node.js Developer
Warsaw, PolandBreakdown

Krystian Podemski
Head of Technology & Community at @PrestaShop, working across technology, product, and the open-source ecosystem
Bydgoszcz, PolandBreakdown
Warsaw, Poland, EUBreakdown

Arseny Kravchenko
ML engineer
Warsaw, PolandBreakdown

Kacper Kafara
React Native Open Source @software-mansion.
Kraków, PolandBreakdown

MasaGratoR
Self-taught coder, working as a truck driver, programming in my free time.
PolandBreakdown
Poznan, PolandBreakdown

Sylwester Arabas
researching clouds in the cloud
Kraków, PolandBreakdown

Adam Sitnik
Open Source contributor, #BenchmarkDotNet maintainer. My job on .NET Team is to make the .NET the fastest developer platform on the planet.
Gdańsk, PolandBreakdown
Poznań, PolandBreakdown

Zygmunt Krynicki
I'm a free software C/Python/Go coder, interested in system-level software, compilers and security.
PolandBreakdown

Iga Karbowiak
Python Developer
Wrocław, PolandBreakdown
Warszawa, PolandBreakdown

Rai Ives
I wanna die 🎲
PolandBreakdown

Ederson Brilhante
Software Engineering Tech Lead
Krakow - PolandBreakdown
Wrocław, PolandBreakdown

Łukasz Gryglicki
+48693582014, Senior Developer @cncf, @linuxfoundation, @kubernetes Interested in Rust, Go, Kubernetes, Helm, eBPF, SQL, Bash, Python, Ruby, C, RISC-V, Asm.
Mińsk Mazowiecki, PolandBreakdown

Stanisław Chmiela
prev. @luma-team
Kraków, PolandBreakdown

Paweł Urbanek
Ruby & Rust
PolandBreakdown
Łódź, PolandBreakdown

Michał Dudak
Turning coffee into code since 2008. Building Base UI at @mui.
Silesia, PolandBreakdown
Warsaw, PolandBreakdown

Mateusz Kwasniewski
Programmer, trainer, speaker, change agent.
PolandBreakdown

Kirill Zyusko
React Native developer (BE/Node.js/Java in the past)
Poland, WarsawBreakdown

Jonatan Witoszek
Engineer @ Bolt.new
Cieszyn, PolandBreakdown
Łódź, PolandBreakdown
Krakow, PolandBreakdown

Sebastian Pietras
not a bot
PolandBreakdown
PolandBreakdown

Piotr Magiera
Software Engineer at @software-mansion
Cracow, PolandBreakdown

Michał Bert
Software developer @software-mansion 💻 Computer Science student at AGH UST 👨🎓 Ballroom dancer 🕺
Cracow, PolandBreakdown
Kraków, PolandBreakdown

Dariusz Rumiński
PHP CS Fixer 🚀
Szczecin, PolandBreakdown
Nieborowice, PolandBreakdown
Wrocław, PolandBreakdown

Aleksander Fidelus
Teaching people GitHub through GitHub Skills @skills
PolandBreakdown
PolandBreakdown

Tomasz Pietrek
OSS Engineering Manager @ Synadia
Poland
































