Josh Long

@starbuxman

Spring Developer Advocate (@Java_Champions & @Kotlin @GoogleDevExpert) @VMwareTanzu 🍃🐲 📽️ YouTube.com/@coffeesoftware

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Uncle Bob Martin

@unclebobmartin

Software Craftsman

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Greg Young

@gregyoung

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Adam Warski

@adamwarski

Sharing elegant solutions to everyday problems | R&D @ SoftwareMill | #Scala / functional programmer #FP | Blogger | #OSS developer

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Venkat Subramaniam

@venkat_s

Programmer, author, speaker, founder Agile Developer, Inc., co-founder of @dev2next Conference, professor @CSatUH

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DHH

@dhh

Father of Three, Creator of Ruby on Rails, Co-owner & CTO of 37signals, Shopify director, NYT best-selling author, and Le Mans 24h class-winner. E: [email protected]

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Brian Goetz

@briangoetz

Java Language Architect at Oracle. Author, Java Concurrency in Practice (amzn.to/2nzZnkl). Also, cats.

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Mariusz Gil

@mariuszgil

Software architect, trainer, conference speaker. DDD & EventStorming Explorer. Podcaster at bettersoftwaredesign.pl

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Martin Fowler

@martinfowler

Author on Software Development. Works for Thoughtworks. Also hikes, watches theater, and plays modern board games. He/him.

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Fatih Arslan

@fatih

Software Engineer at @planetscale. Creator of vim-go. Design addict. Photographer. Previously at @github, @digitalocean

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confidenceconf

@confidenceconf

CONFidence, a legendary cybersecurity conference taking place on 2-3 June 2025 in Krakow, Poland.

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Sebastian Gębski

@liveweird

Geek, engineer, blogger, codefella, serial reader. Engineering leadership for a living. I speak here for myself only.

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Sébastien Deleuze

@sdeleuze

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miroburn

@miroburn

Zbudowałem i sprzedałem 2 firmy - IT & Longevity. Teraz chilluję 🇵🇹 i edukuję. Buduję też sporo stronek z AI. Sprawdź mój ✉️ (dużo AI) 👇

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Róża

@rozie_pl

I don't like the bugs but the bugs like me hxxps://mastodon.online/@rozie

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lcamtuf

@lcamtuf

Substack: lcamtuf.substack.com/archive Homepage: lcamtuf.coredump.cx

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Konrad ‘ktoso’ Malawski 🐟🏴‍☠️🇺🇦

@ktosopl

“Life is Study!”; [email protected]; Swift Actors & Distributed Systems @  Previously: Reactive Streams (TCK), @akkateam Actors, HTTP & Streams, @geecon

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Marcin Kliks

@vi4m

Swift, 3D printing, Python, and coders life! Principal Software Engineer@allegrotech

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Niebezpiecznik

@niebezpiecznik

I know your PIN. @[email protected]

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Devoxx

@devoxx

Devoxx Belgium 2025 : 6 - 10 October in Antwerp ❤️ 🦋 bsky.app/profile/devoxx…

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💙💛 Oleg Kovalov

@oleg_kovalov

still I can't believe it's me / @go_perf / like == bookmark

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SoftwareMill

@softwaremill

Custom software by true engineers #ML #BigData #Scala #Kafka #Akka #Cassandra | Check @scalarconf @scalatimes & Mastodon: [email protected]

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1000

@tauzenmiles

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Node.js

@nodejs

The Node.js JavaScript Runtime. 🐢🚀 Need help with Node.js? We've got a repo for that: github.com/nodejs/help @[email protected]

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アンドレイ

@unsoundscapes

I ♥ concerts, yoga & functional programming. Product Engineer @framer (ex @arrival, @soundcloud, @zalando). He/him. 日本語を勉強しています

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Aleksander Grzyb

@aleksandergrzyb

iOS at @Spotify

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Marcin Jasiński

@mkjasinski

👨‍💻@allegrotech, I love my family & math, bigdata lover 🤪 big fan of @FriendsTV 🤗 and special forces 🥷 WW2 history 🕵️‍♂️

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the other guy

@pan_dziekan

A nerd... ventured in New York but came back to Warsaw. A dev, a mathematician, a data scientist, a chuck Fan and mtg player.

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Łukasz Byjoś - 👨‍💻🇵🇱🇪🇺

@lukaszbyjos

Elon is nazi

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Aleksey Shipilëv

@shipilev

In love-hate relationship with machines. Doing weird stuff, so you don't have to. Personal account, expect no perfection. Currently: everything OpenJDK at AWS.

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Krzysztof Śpiewek

@kspiewek

mydream.myroute.befree

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Kotlin by JetBrains

@kotlin

Discover what’s going on in the Kotlin ecosystem | @JetBrains Video tutorials kotl.in/video News kotl.in/news Community discussions kotl.in/slack

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Wiola

@wiolagozdzik

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Erik Meijer

@headinthebox

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Samuel Jarosiński

@samjarosinski

Android Developer. I enjoy crafting native user interfaces for Android apps. I develop a design system for @allegrotech.

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JavaScript Daily

@javascriptdaily

Sharing links, news, and humor about JS, TypeScript, and related front-end stuff 💛 Not affiliated with Oracle or Larry Ellison.

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Rafał Malinowski

@rafalmalina

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Marcin Grzejszczak

@mgrzejszczak

Tweets about #DistributedTracing #Observability #Tests and #Java Author of books, courses. Making @springframework #observability, @springcloud @micrometerio

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pWoz

@p_woz

JavaEE developer

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Paweł Mendelski

@pmendelski

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Tomasz Kamiński

@tomek120k

blog.tomek.tech

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Adam Grant

@adammgrant

Organizational psychologist @Wharton. #1 NYT bestsellers: HIDDEN POTENTIAL, THINK AGAIN. Podcasts: Re:Thinking & WorkLife @TEDTalks. Former diver and magician.

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Tomasz Fijalkowski

@tomaszfijalkows

Software engineer, around JVM

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Slack

@slackhq

On a mission to make your working life simpler, more pleasant and more productive. Need help? Send us a tweet!

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Jakub Żoczek

@zoczus

Senior Security Researcher @ Securitum

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Michał Jezierski

@tatamis83

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Zalando Technology

@zalandotech

We're the technology team at Zalando, Europe’s leading multi-brand fashion and lifestyle destination. For company updates, check out @Zalando_Press 👈

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Daniel Szymanek

@danek_szy

Front-end Developer; Information abuser; Music addict. Disfunctional programming fan.

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Krzysztof Słonka

@krzysztofslonka

Service Mesh engineer - vi/vim fan && grep -hERo

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Phoenix Framework

@elixirphoenix

The @elixirlang web framework that provides peace of mind from prototype to production

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Jakub Nabrdalik 🇺🇦

@jnabrdalik

Software Dev Also at @[email protected] nabrdalik.dev

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Kacper Kaśków

@kaskow_kacper

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NATS.io

@nats_io

#NATSio is a secure connective technology for modern distributed systems at the edge and in the cloud. #CNCF Email us [email protected]

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Code Europe

@code_europe

#CodeEurope 🦖🦖🦖 The biggest Tech Festival in Poland for IT passionates & specialists. / Największy w Polsce Tech Festival dla pasjonatów i specjalistów IT.

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Anonymous

@youranonone

We are Anonymous. We are legion. We do not forgive. We do not forget. Expect us. News. CULT.

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Demaskujemy dezinformację

@przeciw_wojnie

Publikujemy ostrzeżenia na temat dezinformacji w polskojęzycznym Internecie.

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Filip Łazarski

@felipe444f

senior software engineer; open source contributor; author of articles; speaker

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pozitive technologies

@pozitivetech

We believe technology is not just about programming languages. It's about applying different concepts, mixing paradigms...

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Jeremi Anastaziak

@jeremianastazi1

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Mateusz Jabłonowski

@_mjablonowski

#HR #employerbranding #recruitment #candidateexperience #personalbranding #socialmedia | Consultant, expert, book author

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Jakub Dyszkiewicz

@jdyszkiewicz

Software Engineer at @thekonginc 🦍. #ServiceMesh #Kotlin #Golang kuma.io

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mszarl

@m_szarlinski

Software Engineering. I speak for myself, opinions are my own.

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Jacek Sałacki

@jacek_sa

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Molecule Group

@moleculegroup

Award winning Communications and Media Consultancy 📣 Shaping Industry and Political Landscapes with Strategic Communication and Media Solutions 📈

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Warsaw Cloud Native

@wawcloudnative

Warsaw Cloud Native Group. Check our Meetup for new events meetup.com/Warsaw-Cloud-N…

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Kotlin Warsaw

@kotlinwarsaw

Official channel of Kotlin community in Warsaw. We are going to organize regular meetings, where backend, desktop and mobile developers share their experience.

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Fira Code

@firacode

Monospaced font with programming ligatures. Support further development at patreon.com/tonsky

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