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
Krakow, PolandBreakdown

Mateusz "Serafin" Gajewski
Software Janitor
PolandBreakdown

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

Robert Pająk
@open-telemetry Go and .NET Automatic Instrumentation maintainer. Author of @goyek.
Poland, CracowBreakdown
PolandBreakdown
Poland, LowiczBreakdown

Tomasz Chabora
Godot Master Race
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.
Greater Poland, PLBreakdown

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

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

Lukasz Ostrowski
Principal Developer @saleor
Bielsko-Biała, PolandBreakdown

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

ravicious
I like ice creams.
Kraków, PolandBreakdown

Hubert
Software Engineer at @ChainSafe
Poznań, PolandBreakdown
Gdańsk, PolandBreakdown

Tomek Drwięga
tomusdrw.eth
PolandBreakdown
PolandBreakdown

Damian Legawiec
@spree lead developer
Warsaw, PolandBreakdown

Majonez.exe
Hi, I'm Majonez.exe - Freelancer, Javascript enthusiast and Full-Stack Developer
PolandBreakdown

Mateusz Łopaciński
Software Engineer @software-mansion with over 3 years of working experience, Open Source contributor
Cracow, PolandBreakdown
Łódź, PolandBreakdown

Franciszek Job
23 yo CS AGH @software-mansion
Cracow, PolandBreakdown
Kraków, PolandBreakdown

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

Iga Karbowiak
Python Developer
Wrocław, PolandBreakdown

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

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

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

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

Adam Gąsowski
PHP & Node.js Developer
Warsaw, PolandBreakdown

Krzysztof G.
:envelope: gikf@pm.me
Warsaw, PolandBreakdown
Łódź, PolandBreakdown

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

Aleksander Fidelus
Doing some cool stuff with the GitHub Learn team at @github
PolandBreakdown

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

Valery Piashchynski
Golang Staff Software Engineer
Poland, Wrocław Breakdown

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

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

Jonatan Witoszek
Front-end Developer @ Saleor
Cieszyn, PolandBreakdown

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

Dariusz Rumiński
PHP CS Fixer 🚀
Szczecin, 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

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

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

Tomasz Zawadzki
Senior Software Engineer @software-mansion, React Native Open Source Contributor
Kraków, PolandBreakdown

DAYNLIGHT (✿◡‿◡)
I wanna die 🎲
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

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

Krzysztof Nalepa
Software Engineer @software-mansion | Creator of LiveDebugger | Elixir, Phoenix, LiveView
Kraków, PolandBreakdown

Sebastian Łaskawiec
An Open Source enthusiast who loves to work with interesting projects and people.
PolandBreakdown

Krystian Podemski
I'm a web developer from Poland, specializing in working with PrestaShop e-commerce
Bydgoszcz, PolandBreakdown
Wrocław, PolandBreakdown

Sylwester Arabas
researching clouds in the cloud
Kraków, PolandBreakdown

Mateusz Konieczny
A map enthusiast.
Kraków, PolandBreakdown

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

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

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

Piotr Osiewicz
I'm interested in low level programming. The opinions are my own.
Cracow, PolandBreakdown
PolandBreakdown

Jakub Romańczyk
React Native @callstack
Cracow, PolandBreakdown
PolandBreakdown
PolandBreakdown

Jakub Konka
Systems programmer
Warsaw, PolandBreakdown

Bartosz Sławecki
@python @mkdocstrings
PolandBreakdown

Omar Alshaker
Generalist
Warsaw, PolandBreakdown

Adam Twardoch
@Fontlab, @latofonts manager, Unicode, OpenType. ❤️ Claude.ai, Python, Markdown & YAML
Gdańsk, PolandBreakdown
Poznan, PolandBreakdown

Jagoda Estera Ślązak
I looove my puter. All donations will be spent on cheese.
PolandBreakdown
Wrocław, PolandBreakdown
Warszawa, PolandBreakdown

Rafał Leszko
Coder, Speaker, Writer, Bloger.
Kraków, PolandBreakdown

Jakub Grzywacz
Working on @expo SDK at @software-mansion, react-native-svg maintainer, React Native Open Source
PolandBreakdown

Paweł Tymczuk
💻 🙌 ☕️ I do work with technologies like: React, Next.js, TypeScript, NodeJS.
Kraków, PolandBreakdown

Norbert Orzechowicz
Problem solver, software architect, also working as a Data Witcher ⚔️, hunting and killing 🧌 and 🪳in data pipelines! Available for consulting & hire 💪
Kraków, PolandBreakdown
Krakow, PolandBreakdown
PolandBreakdown

Krzysztof Krysiński
PixiEditor creator, Google Code-In 2019 Runner Up, Google Code-In 2018 Finalist and Yerba mate powered code lover
PolandBreakdown

Arkadiusz Bokowy
Synergistically leveraging cutting-edge ML models to hyper-accelerate cloud-native, AI-powered solutions by pushing the boundaries of next-gen tech stacks.
Warsaw, PolandBreakdown

Kamil Kisiela
[Place for an ad]
Warsaw, PolandBreakdown

Mateusz Maćkowski
Open-source contributor, enthusiast of Rust and GNU/Linux, CTF participant, and competitive Riichi Mahjong player.
Kraków, PolandBreakdown
PolandBreakdown
Sucha Beskidzka, PolandBreakdown
PolandBreakdown

Jakub Gonet
TS, Elixir, C, Zig ツ
Krakow, PolandBreakdown

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

Arseny Kravchenko
ML engineer
Warsaw, PolandBreakdown

trag1c
swe @nokia, goofball @ghostty-org, eeping @bed
Wrocław, PolandBreakdown
PolandBreakdown
Poznań, PolandBreakdown

Duncan Ogilvie
Reverse engineer, creator of @x64dbg and 100+ other projects. Love binary analysis and Windows internals. Dreaming about doing open source full time...
PolandBreakdown

Alek Mikucki
RN engineer @software-mansion · SDK @expo
Kraków, PolandBreakdown

Sefinek
A free mind, not part of the system. Guided by logic and curiosity, not propaganda. I believe in truth, peace, and people who think for themselves.
Poland 🦅 West Pomeranian Voivodeship



























