Cay Horstmann @horstmann.com Nothing to see here...keep moving! Specifically, to Mastodon: https://foojay.social/@cayhorstmann
Devoxx Belgium @devoxx.com Devoxx Belgium 2026 : 5 - 9 October in Antwerp
JavaZone @javazone.bsky.social JavaZone 2026, Norwegian Java conference, takes place on September 2-3, 2026, at Nova Spektrum, Lillestrøm near Oslo.
www.javazone.no
Willem Jan Glerum @wjglerum.nl Principal Software Engineer @ Lunatech
https://wjglerum.nl
WarpStream @warpstream.com WarpStream is a diskless, Apache Kafka®-compatible data streaming platform built directly on top of object storage: zero disks, zero inter-AZ fees, zero access.
Jepsen @jepsen.mastodon.jepsen.io.ap.brid.gy Breaking distributed systems, one fault at a time.
[bridged from https://mastodon.jepsen.io/@jepsen on the fediverse by https://fed.brid.gy/ ]
Shivansh Vij @shivanshvij.com CEO @loopholelabs.io
Kostas Pardalis @cpard.bsky.social Building https://typedef.ai | host @ https://techontherocks.show | Done some cool stuff with trinodb | ex-RudderStack | previously CEO @ Blendo 
Juraci Paixão Kröhling @jpkroehling.bsky.social Founder @ OllyGarden, OpenTelemetry maintainer, CNCF Ambassador.
🇧🇷 Também escrevo em português.
Joran Dirk Greef @joran.tigerbeetle.com Creator, Founder and CEO of @tigerbeetle.com — the financial transactions database designed for mission critical safety and performance.
v @avi.im breaking databases @tur.so W1 '21 @recursecenter.bsky.social
excited about databases, storage engines and message queues
s2.dev @s2.dev API for unlimited, durable, real-time streams
OpenJDK @openjdk.org The place to collaborate on an open-source implementation of the Java Platform and related projects · https://openjdk.org
Andrew Atkinson @andyatkinson.com Author of High Performance PostgreSQL for Rails, Staff Engineer, Consultant, Speaker
andyatkinson.com/pgrailsbook
Joshua Bloch @joshbloch.bsky.social Effective Java author, API Designer, CMU Prof, Swell guy.
Georges Saab @gsaab.bsky.social SVP of Java Platform Group at Oracle. Chair of OpenJDK gov board. ameri-swede. WoSo lover.
Alexander Reelsen @spinscale.bsky.social Husband, dad, enjoys working distributed, likes distributed databases & search engines, the JVM, Basketball/Streetball fan, gulps coffee, lives in Emsdetten/Germany, occasionally blogs at https://spinscale.de
Renato Mefi @renatomefi.bsky.social CTO @ Evoura - Data Streaming and EDA experts
HYTRADBOI @hytradboi.bsky.social Have you tried rubbing a database on it?
https://www.hytradboi.com/2025
Jaromir Hamala @jerrinot.bsky.social I play with distributed systems by day and poke various runtimes by night. Engineer @QuestDB, @Hazelcast alumnus.
Steffen Hausmann @sthmmm.bsky.social I like databases and streaming systems.
miguno @miguno.com Solo entrepreneur in Europe · Open-source software developer · Committer at the Apache Software Foundation
Guillaume Smet @gsmet.bsky.social Happy camper at Red Hat. Improving Quarkus one commit at a time.
Confluent @confluent.io The Data Streaming Platform
Feldera @feldera.bsky.social Build AI-era products previously considered impossible with Feldera, a compute foundation built for the speed and scale of agents. It computes by only observing how data changes. No more batch jobs recomputing everything from scratch on a schedule.
Tagir Valeev @tagir-valeev.bsky.social Work at JetBrains. Java Champion. Check my Java book: https://mng.bz/671p
David Ingham @dingham.bsky.social Senior Engineering Director at Red Hat. I look after APIs, Events & Integration.
Heinz Kabutz 🏝 🇬🇷 🇿🇦 ☕️ @heinzkabutz.com Author of mildly entertaining and somewhat useful #Java Specialists’ Newsletter. Email is heinz at javaspecialists dot eu.
Michael Hunger @mesirii.de Developer Advocacy & Labs at Neo4j.
Happy dad of 3 girls ADHD GraphAddict JavaChampion
Code http://github.com/jexp
Words http://medium.com/@mesirii
Network http://de.linkedin.com/in/jexpde
Natacha Crooks @nacrooks.bsky.social CS prof at UC Berkeley. Distributed Systems and Databases. Baking, handball and football enthusiast. Avid cheese eater. 
Peter Palaga @ppalaga.bsky.social Software engineer working on Quarkus CXF and Camel Quarkus. Opinions are my own, not necessarily of IBM.
Ståle Pedersen @stalep.bsky.social App Services Performance Team Manager @ RedHat, prev engineer
Nataliia Dziubenko @nataliiadziubenko.com 🇺🇦🇳🇱 Making cool stuff at Azul, passionate about everything Java & JVM https://nataliiadziubenko.com/
Mickael Maison @mickaelmaison.bsky.social Committer and Chair of the PMC for Apache Kafka
Software Engineer at IBM
Peter Kraft @petereliaskraft.net Co-founder @ http://dbos.dev • Stanford PhD • Database Geek • Building https://github.com/dbos-inc/dbos-transact-py
@davistreybig.bsky.social @davistreybig.bsky.social 
Sophie Blee-Goldman @ableegoldman.bsky.social Apache Kafka PMC/committer, Founding Engineer at Responsive, Kafka Streams dev/fan, otter advocate. My debugging rubber duck is a 5 ft giraffe, please refer any questions to him
Félix GV @felixgv.ninja Mostly here to talk about data infra. Opinions will eventually be your own.
Camille Fournier @skamille.themanagerswrath.com she/her. Author, manager, distributed systems engineer, etc etc, my latest book Platform Engineering is available now! https://amzn.to/4eUz5zB
Chris Engelbert / noctarius - エンゲルベルト クリス @noctarius.com DevRel / Tech Marketing @ simplyblock.io
Noctarius ツ, #Devrel, #Opensource, #JapaneseFood, #JavaChampions
Ex Timescale, clevabit, Instana, Ubisoft, Hazelcast
Views are my own
Linktree: https://linktr.ee/noctarius2k
Steve (TheSteve0) Pousty @thesteve0.bsky.social 
Ron Pressler @pressron.bsky.social 
Seth Wiesman @sjwiesman.bsky.social 
Wesley Reisz @wesleyreisz.com Software Developer & Technologist
Equal Experts, ex-Thoughtworks, ex-VMWare
Louisville / San Francisco
(he/him)
Justin @jaffray.bsky.social turning to the succor of modern computing machines, let us renounce all analytic tools
https://buttondown.com/jaffray justinjaffray.com
Simon Ritter @speakjava.bsky.social Deputy CTO at @AzulSystems. Java Champion, member Java SE Expert Group, JCP EC, OpenJDK Vulnerability Group and Adoptium SC. AMA about Java and JVM.
Commonhaus Foundation @commonhaus.org The Commonhaus Foundation is dedicated to supporting the growth and stability of open-source projects through collaboration and innovation. https://commonhaus.org
Hibernate @hibernate.org The Hibernate team behind the suite of open source Java libraries around domain models.
https://hibernate.org
https://in.relation.to
@hibernate (X/Twitter)
QCon @qconferences.com Uncover emerging trends and practices from the world’s most innovative software professionals to help you validate your software roadmap. Celebrating 20+ years. Learn more about our conferences at QConferences.com and InfoQ.com.
🔗 linktr.ee/qconferences
Adam Bien @adambien.blog AWS Hero, JavaONE Rockstar, Consultant, Java Champion
about: https://about.adam-bien.com
linkedin: https://www.linkedin.com/in/adam-bien
trainer: http://airhacks.live and http://airhacks.io
podcaster: http://airhacks.fm
yt: http://youtube.com/@bienadam
Erin Schnabel @ebullient.dev Java Champion. Distinguished Engineer and maker of things @ Red Hat. Former @IBM. Chairperson of the Commonhaus Foundation.
Rafael Winterhalter @rafaelcodes.bsky.social software consultant who likes static typing, coding at http://github.com/raphw 🇧🇻🇩🇪🇪🇺
Kevin Bourrillion @kevinb9n.bsky.social Java Platform Group @Oracle (all opinions are my own alone).
See random stuff about me at http://kevinb9n.github.io
Kris Jenkins @krisajenkins.bsky.social Lifelong Programmer, Host of the Developer Voices podcast.
Jonathan S. Katz @jkatz05.com Sr. Staff Product Manager @ Databricks | PostgreSQL Core Team member. Helping people to adopt and learn PostgreSQL! Opinions are my own. | https://jkatz05.com/
Vincent Mayers @mayers.io DevRel and Tech Community Leader, Java Champion, MicroProfile.io steering committee, Speaker, Organizer of Devnexus and Atlanta Java Users Group
Stephan Ewen @stephanewen.bsky.social Building distributed systems and data infra.
Previously co-creator of Apache Flink (https://flink.apache.org/),
now building Restate (https://restate.dev/) to make distributed apps more easily resilient and scalable.
Mario Torre @mariotorre.bsky.social Follow me on:
https://mario-torre.bandcamp.com
https://mastodon.social/@MarioTorre
The opinion expressed here are my own. Like and share doesn't necessary mean I agree with the content.
I'm leftist and antifascist. No human being is illegal. #fckafd
Uberto Barbini @ramtop.bsky.social Functional passionate programmer. Kotlin GDE
Author, Public Speaker
https://pragprog.com/titles/uboop/from-objects-to-functions/
#TDD #FP #Kotlin
Living with family in a Japanese traditional house 日本語
Sebastian Daschner @daschners.bsky.social Helping developers solving the challenges of enterprise software.
0xc1a35 @cl4es.bsky.social Work: OpenJDK/Java performance; https://github.com/cl4es
Paul Dix @pauldix.bsky.social Cofounder & CTO InfluxData, makers of InfluxDB, the open source time series database. Founder of NYC Machine Learning Meetup. Former Ruby on Rails developer and enthusiast (still a fan).
Dalibor Topić @robilad.bsky.social Although I work at Oracle Global Services Germany: The views expressed on this [blog; Web site] are my own and do not necessarily reflect the views of Oracle.
Mastodon: @Robilad@det.social
Mastodon bridge account: @Robilad.det.social.ap.brid.gy
Chris Richardson @crichardson.bsky.social Creator of Microservices.io
Cowtown Coder @cowtowncoder.bsky.social Coder, OSS Author (Jackson, Woodstox, java-uuid-generator etc); father; hiker; immigrant; worker. Born in Finland, lives nowadays in the magnificent US Pacific Northwest.
Mattias Karlsson @matkar.bsky.social Jfokus founder, Java Champion, JUG leader, Software Vagabond, Family father, Motorcyclist & Kiva supporter. Check out @jfokus.bsky.social
Jordan Tigani @jrdntgn.bsky.social Co-Founder and chief duck-herder at MotherDuck. Likes small data and clever hacks. He/him
Roland Huß @ro14nd.bsky.social Software and Chili Geek • Red Hat • O'Reilly Author • Llama Stack • k8spatterns.com • jolokia.org
Andrew Haley @aph13.bsky.social Free the software! Java, HotSpot, OpenJDK.
I post in a personal capacity, not on behalf of my employer or any other organization.
🏳️🌈🏳️⚧️
Brian Vermeer @brianvermeer.nl Java Champion | JUG leader
NLJug & VirtualJug | Oracle ACE Pro | CS Master at Utrecht University | Java | Haskell | Security | Dutch Air Reserve | Views are my own
Marco Slot @marcoslot.com Mostly posts about PostgreSQL, Snowflake Postgres, and PostgreSQL extensions.
Formerly Crunchy Data, Microsoft, Citus Data, AWS, TCD, VU
Decodable @decodable.co Decodable is a serverless real-time data platform built on #ApacheFlink. No clusters to set up. No code to write. No PhD required.
José Paumard @josepaumard.bsky.social #Java #DevRel @Oracle, bartender #JEPCafe and https://dev.java, Java Champion Alumnus, JavaOne Rockstar. I post about #Java, sometimes cooking, Opinions are my own. Posts are in EN and FR.
Daniel Bryant @danielbryantuk.com Platform Engineer and PMM at Syntasso | News/Podcast at InfoQ | Web 2.0 coder, platform engineer, Java Champion, CS PhD | cloud/K8s, APIs, IPAs, running | learner/teacher
Andrey Satarin @asatarin.bsky.social Staff SRE at Google. Distributed systems / databases / reliability / correctness. Views my own. Repost / like is not an endorsement.
http://asatarin.github.io
Oliver Drotbohm @odrotbohm.de Frameworks & Architecture in the Spring open source engineering team, all things Spring, Java, data, DDD, REST, software architecture, drums & music. He/him.
@java-champions.bsky.social @java-champions.bsky.social 
Jean-Philippe Bempel @jpbempel.bsky.social Sr Sw Eng @Datadoghq, optimize software running on JVM. Love performance topics and mechanical sympathy supporter. Java Champion & @javamissionctrl committer
Robert Scholte @rfscholte.bsky.social Founder/owner Sourcegrounds, Java Champion, former Maven chairman, international speaker, bookreviewer
Peter Lawrey @peterlawrey.bsky.social Java Champion | Vanilla Java Blog (6M views) | CEO of Chronicle Software with 8 out the top 11 investment banks as clients.
Six kids from 3 to 26
Stephen Colebourne @jodastephen.bsky.social Java Champion. Joda-Time. Joda-Beans. Joda-Money. JSR-310. ThreeTen-Extra. Blogger. Conference speaker. https://blog.joda.org I do not represent my employer.
Georgios Andrianakis @geoand86.bsky.social Principal Software @ Red Hat, working on Quarkus, Langchain4j and others
Bilgin Ibryam @bibryam.bsky.social 📌 Architect, turned product manager
🦆 Co-author of Kubernetes Patterns
🎩 Product manager at Diagrid, ex Red Hat
🤖 AI newsletter for devs 👉 https://GenerativeProgrammer.com
Antonio Goncalves @agoncal.bsky.social Principal Software Engineer @Microsoft @Azure @JavaAtMicrosoft @devoxxfr @parisjug @Java_Champions @pluralsight #BookAuthor #Jazz #Tango Us/We
Emmanuel Bernard @emmanuelbernard.com Open Source software engineer: Hibernate team, Quarkus co-founder and more. Cloud Services @ Red Hat.
Les Cast Codeurs founder. Java Champion...
Julian Hyde @julianhyde.bsky.social On a mission to tame data. (Ex-Google, always ASF, working on something new.)
Brian Goetz @briangoetz.bsky.social Java Language Architect at Oracle. Author, Java Concurrency in Practice (http://amzn.to/2nzZnkl). Also, cats.
Stephan Janssen @stephanjanssen.be Founder @Devoxx.com Devoxx4kids, BeJUG and DevoxxGenie | Co-founder @Voxxed.com, VoxxedDays - Founder JCS int. acquired by RealDolmen ('02) : See also @ https://stephanjanssen.be
https://grokipedia.com/page/Stephan_Janssen
InfoQ @infoq.com Helping dev teams adopt new technologies and practices for 20+ years. Written by software engineers. Read by over 1.5 m devs worldwide. InfoQ.com and QConferences.com
https://linktr.ee/infoq
🥼 Piotr Przybył @piotrprz.bsky.social Software Gardener. Java Champion. Docker Captain. Edutainer. Speaker. Trainer. Художник. Honorary Bavarian. 👨💻👨🌾
#Java #Testcontainers #Linux #Programming
softwaregarden.dev
Views are mine, impressions are yours.
Matt Fleming @mfleming.bsky.social Nyrkiö co-founder. Systems engineer at Cloudflare. Former Linux kernel maintainer. Performance nerd.
Roy van Rijn @royvanrijn.com Director of OpenValue Rotterdam, is a @Java_Champions, founder of Rotterdam JUG, public speaking: Java, AI, math, algorithms
Stuart Marks @smarks.bsky.social Java/JDK/OpenJDK developer, Oracle Corporation. The views expressed here are my own and do not necessarily reflect the views of Oracle. Mostly on @stuartmarks@mastodon.social ; formerly @stuartmarks on Twitter.
Edson Yanaga @yanaga.io Empowering developers worldwide as Staff Developer Relations Engineer, Wallet Lead, @Google. Java Champion and former 7x Microsoft MVP. Opinions are my own.
Sébastien Blanc @sebi2706.bsky.social My job is to make developers happy.
Technical Director @sciam.fr
Java champion, OSS, husband and father.
5 🐱
Mark Reinhold @mreinhold.org Chief Architect, Java Platform Group, Oracle · Views are my own · https://mreinhold.org