4Developers
@4developers
4Developers: największy interdyscyplinarny festiwal technologiczny w Polsce.
ID: 111048889
http://4developers.org.pl 03-02-2010 16:53:28
2,2K Tweet
2,2K Followers
1,1K Following
Jarek
@jarek606
GitHub
@github
The AI-powered developer platform to build, scale, and deliver secure software.
Adam Dymitruk
@adymitruk
@EventModeling author, contributor to scaling #EventSourcing, CEO @AdaptechGroup, OS: @Kubuntu, #linux/#git nerd, YouTube youtube.com/@eventmodeling
Mariusz Gil
@mariuszgil
Software architect, trainer, conference speaker. DDD & EventStorming Explorer. Podcaster at bettersoftwaredesign.pl
Karol Sejka
@karolsejka
Sebastian Gębski
@liveweird
Geek, engineer, blogger, codefella, serial reader. Engineering leadership for a living. I speak here for myself only.
koziolek 🐐
@koziolek
Ja się z tobą nie kłócę, ja ci tłumaczę, dlaczego nie masz racji. I/0 ps. jakbyśmy umarli to » @[email protected] buymeacoffee.com/koziolek
Konrad ‘ktoso’ Malawski 🐟🏴☠️🇺🇦
@ktosopl
“Life is Study!”; [email protected]; Swift Actors & Distributed Systems @ Previously: Reactive Streams (TCK), @akkateam Actors, HTTP & Streams, @geecon
Niebezpiecznik
@niebezpiecznik
I know your PIN. @[email protected]
Rafał Legiędź
@rafek
Web, mobile, VR/AR passionate and developer. Conference junkie. Loves running in the wild. Drummer at heart. Co-Founder at @devconfpl.
Jakub Gutkowski
@gutek
Rafał Warzycha
@rwarzycha
IoT Solution Architect @ Softserve, blogger, podcaster
infosharepl
@infosharepl
The Biggest Tech Conference in CEE. Developers, entrepreneurs, startuppers and marketers – Let's Infoshare! Next edition: May 27-28, 2025 #ShapeTomorrowToday
Piotr Rogala
@rogalapiotr
Passionate about good music, the best solutions, clean cars. Love everything that is premium and cheap. On a daily basis associated with IT.
Paweł Łukasik 💾
@pawel_lukasik
I like making & breaking things · ostrapila.pl · youtube.com/@allthingsreve…
Svitla Systems Inc.
@svitlasystemsin
Svitla Systems is a global trusted IT solutions company headquartered in California, with business and development offices throughout the world.
meet.js
@meetjs
Series of events, meetups, and workshops regularly organised in more than 11 cities in 🇵🇱. One of the largest thriving JavaScript communities in the country.
🥼 Piotr Przybyl 🌻☮️ #StopStupidWar
@piotrprz
Java Champion. Testcontainers Champion. Software Gardener. DevAdv for @Elastic. Edutainer. Speaker. Trainer. 👨💻👨🌾 Views are mine, impressions are yours.
Kamil Grzybek
@kamgrzybek
Husband. Father. Head Of Software Engineering | Software Architect | Team Leader | Developer. Enthusiast. Software Architecture & Design. Domain-Driven Design.
Grzegorz Kotfis 🧢
@gkotfis
#opentowork | @cloudybuddyio founder | 💻 Cloud Engineer | 🌍 Freelancer | 🎙 devsession.pl
ZaufanaTrzeciaStrona @zaufanatrzeciastrona@infosec
@zaufana3strona
Sprzedawcy kitu - jak nie robić marketingu security: z3s.pl/kit
Dominik
@dominik_9n
Radosław Kosiński
@r_kosinski
Software developer at @BatmaidCom Hobbyist miniature painter. Father of two 👧👶
Kamil Najman
@kamilnajman
Senior UI&UX designer, Design System Specialist, Product Designer
Cezary Grabowski
@cpgrab
Software Engineer
Jacek Zygiel
@jzygiel
Michał Mazur
@michalmzr
Software engineer, lifehacker, productivity fan
Sekurak
@sekurak
Piszemy o bezpieczeństwie...
Konrad Kokosa
@konradkokosa
AI/LLM Agents Team Lead at @nethermindeth • Pro .NET Memory book • .NET MVP • @crowdpub_org founder • one of @dotnetosorg • skeptical fan of web3 • AFOL
Maciek Toczyłowski
@stachopresident
Instagram, snapchat: stachopresident
Michał Michalczuk
@michalczukm
Fullstack engineer & Consultant @ Tektit, Ex @Atlassian; IT trainer; #typescript #nodejs & various JS stuff.
Miłosz Smółka
@m1_10sz
I build stuff and write about what I learned. Co-founder of Three Dots Labs (watermill.io and hands-on Go trainings). Personal: theleaplog.com
Tomasz Łakomy
@tlakomy
Staff Engineer @runwayml | ex Engineering Team Lead @Stedi | AWS Hero | Co-founder at @cloudashdev | @eggheadio instructor | 2x AWS Certified | Be kind
Mike Kowalski
@mikemybytes
Software engineer building #DistributedSystems for fun and living 🤓 Tweets #Java #architecture #Kafka #craftsmanship & beyond 🚀 Mikes his own opinions & bytes
Joanna L
@jnn_len
Radek Maziarka
@radekmaziarka
I help companies deliver better digital products, by using proven engineering techniques. Engineering Manager, Solution Architect, DDD, cloud.
Jakub Nabrdalik 🇺🇦
@jnabrdalik
Software Dev Also at @[email protected] nabrdalik.dev
WarsawJS
@warsawjs
The biggest JS community in Warsaw gathers monthly to chat about the versatile world of JavaScript - from browsers to servers, dev tools to microcontrollers!
Tomasz Ducin 🇺🇦
@tomasz_ducin
developerjutra.pl student of systems 📚 software architecture 🏗️ frontend & backend 🦋 nodejs js ts react angular 🥚 bit.ly/ducin-egghead
Adam Cieloch
@adamcieloch
DevConf
@devconfza
The largest community run conference for software developers held annually. We are also on 🐘 mastodon.cloud/@devconf
Marek Matuszewski
@marezoo2
Michał
@lampart071
Anita Przybył
@anita_przybyl
Trener umiejętności społecznych, trener leadership, soft skille w IT
HackYeah
@hackyeah
HackYeah – the biggest hackathon in Europe!
Piotr Zdunek
@cyberpiotrek
marioIT
@mario54393460
Mario IT
Wojciech
@wojtekp90
Kamila Langowska
@langus_
Organizuję super eventy dla branży IT! ✨
Grajmerki
@grajmerki
Gry (głównie) kobiecym okiem 🎮 Piszemy 📝 Streamujemy 🎥 Walczymy ze stereotypami 💃 #grajmerki 👾
Oh My Hack
@omhconf
Najbezpieczniejsza konferencja cybersecurity w Polsce! Wydarzenie pod patronatem serwisu Zaufana Trzecia Strona. 2.12.2025 | PGE Narodowy | Warszawa
Sławomir Jona
@slawek_jona
yumyum
@ostrowtom
PrzekazaPiotr
@przekazapiotr
GFT Polska
@gft_pl
GFT jest pionierem transformacji cyfrowej, który tworzy zrównoważone rozwiązania, wykorzystując najnowsze technologie. 💻
Monika Fus
@mfs_dev
Carpe momentem
Big Flat Potato
@bigflatpotato
We are indie game studio from Poland, currently working on our game #Spyhack
MJ_69
@mj_69__
Paweł Tokarz
@tokarz_pawel
Doing this and that, trying to enjoy it as much as I can.
mszarl
@m_szarlinski
Software Engineering. I speak for myself, opinions are my own.
Grzegorz Sancewicz
@gsancewicz
Passionate Software Developer.
Grzegorz
@grzegorzmaksim1
Microsoft Student Partner. Leader of .NET Group at Lublin University of Technology.
Mateusz
@matty_coding
C++, GPU & 3D Graphics
Krzysztof Kędzierski
@kkedzierski87
Engineering Leader, Software Craftsman
Nieznany Ekonomista
@blizejnieznany
takie tam
Grupa XOR
@grupaxor
Oficjalny Twitter koła naukowego XOR #PolitechnikaŚwiętokrzyska #GrupaXOR #Kielce
Archi Shooters
@archi_shooters
Just a small Instagram account about architecture that has evolved to a small Twitter account too. Featuring Instagram shots and rt architecture stuff.
Patryk Omiotek
@patrykomiotek
Ask me for web applications 💻 IT Consultant, Trainer & Software Engineer
fishy
@fishy933