Łukasz Stachowiak @stachowiak.dev Software Developer / Team Leader at Currency One
GeeCON Conference Organizer
Poznań JUG leader
(Ultra)Marathon Runner
Konrad ‘ktoso’ Malawski @kto.so “Life is Study!”; Swift Actors, Concurrency & Distributed Systems @ Previously: Reactive Streams (TCK), @akkateam Actors, HTTP & Streams, @geecon Conference, Java Champion. he/him.
Christian Humer @chumer.dev PL/VM/Compilers at Oracle. Working on Truffle/Graal.
ME/CFS Caretaker and Activist (https://ooe-mecfs.at).
Austrian expat in Zurich.
Jfokus @jfokus.se Jfokus is all about developers!
Check out the conference: http://www.jfokus.se
Gerald Venzl @gvenzl.bsky.social Defender of Common Sense, Performance Enthusiast, #Database and #SQL guy, Creator of #csv2db. “Write code to solve problems, not to create them!” 🇦🇹
Sean Mullan 🏳️🌈 @seanjmullan.org OpenJDK Security Group Lead. Views my own.
Max Rydahl Andersen @maxandersen.xam.dk Quarkus co-lead - Distinguished Engineer, Red Hat. Creator of https://jbang.dev
Sebastian Basner @sebastianbasner.bsky.social @sebastianbasner@chaos.social
LangChain4j @langchain4j.dev Effortlessly build LLM-powered applications in Java, including chatbots, agents, structured data extraction and RAG: https://github.com/langchain4j/langchain4j
Erik C. Thauvin @erik.thauvin.net The Truth is Out There! 👽
🔹 Software→ developer, 40+ years
🔹 France→ born & raised
🔹 Apple US→ in my early 20s
🔹 Companies→ sold a few
🔹 Consulting→ lots of
🔹 Java Linkblog→ ran for 7 years
🔹 Columnist→ Java Developer's Journal
🔹 Cancer→ survivor
geecon @geecon.bsky.social Java and JVM based technologies, dynamic languages, enterprise architectures, patterns, distributed computing, AI and more
https://geecon.org/ Kraków, 14-15 May 2026
Loïc Mathieu @loicmathieu.fr Lead Developer @kestra.io, Java & JVM passionate, performance, OSS contributor (mainly Quarkus), Book Author (Quarkus edition ENI), GCP Google Dev Expert.
Like to learn stuff and share what I learned.
https://www.loicmathieu.fr
Lilian BENOIT @lilian-benoit.bsky.social ☕ BordeauxJUG Leader
👥 @jee_ambassadors
🦣 @Lilian_Benoit@jvm.social
❤️ #Linux #Debian #Java #JVM #OpenJDK #JakartaEE
📝 J'écris quelques billets ➡️ https://www.lilian-benoit.fr
Ivar Grimstad @theguywiththeduketattoo.com Java Champion | Jakarta EE Developer Advocate | The guy with the Duke tattoo
https://jakarta.ee/community/developer-advocate/
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...
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.
David Král @davidkral.bsky.social Java Developer at Oracle, Member of the Helidon and several Jakarta projects
steve o’grady @sogrady.org helped found redmonk. if you see someone at a tech conference wearing a Red Sox hat, that's probably me. otherwise found in the great state of Maine. wrote the new kingmakers and the software paradox. married to @girltuesday.org. eph.
Chandra Guntur @cguntur.bsky.social Hoopy Frood
Java Champion. NYJavaSIG & GardenStateJUG Leader
#Saganist #BeKind #UsualSuspects #TrollBlocker 🖖🏼😎 🇱🇷
अहं ब्रह्मास्मि
Motto: docendo discimus
Website: https://cguntur.me
Tom Cools @tomcools.be DevRel @Timefold | Conference (Keynote) Speaker 🗣️ | #Java Champion | @BeJUG Organizer | Kind of a weird guy 😅
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
Rustam Mehmandarov @rustam.no Passionate computer scientist 📍🇳🇴
Java Champion ☕ | Google Developer Expert (GDE) for Cloud ⛅ | Docker Captain 🐳 | Public speaker 🎙️ | Mentor & Community leader 🌟 | All things Java, Cloud, AI/ML, data, & open source | Ex-leader of JavaZone & javaBin.
Martijn Verburg @karianna.bsky.social Making tech co-exist with Humans - Principal Group SWE Manager (Java, Python, Go) @ Microsoft, former CEO @ jClarity (acq. by MSFT) formerly Diabolical Developer, Author, Speaker, Angel Investor, Exec Coach, Non-Exec director, Owner of Low Key Cocktail Bar
Geert Bevin @gbevin.uwyn.com Director of Software Development at Moog Music, Principal Software Engineer at Roger Linn Design, Father of MPE, Board Member at Asheville Music School, Creator of RIFE2 & bld, Java Champion, Maker, 3D Printing & Design, Singer, Guitarist, Kung Fu, Tai Chi
Tim Bray @tbray.org Web geek and environmentalist with a camera at the bottom left corner of Canada. He/him.
I’m mainly on Fedi, @cosocial.ca@timbray. On this account I mostly post #blueskyabove photos; for more, if you’re not on Fedi try @timbray.cosocial.ca.ap.brid.gy
Nandini Ramani @eyeseewaters.bsky.social 
Martin Klähn @mklaehn.bsky.social 
Jeff Barr @jeffbarr.bsky.social Maker, Husband, Parent, Grandparent, VP & Chief Evangelist for AWS
Guillaume Laforge @glaforge.dev 🥑 Developer Advocate for Google Cloud ☁️
🧠 Focusing on Generative AI 🤖
⭐ Co-founder of the 🪶 Apache Groovy programming language
☕ Java Champion 🏆
📣 Co-host of Les Cast Codeurs Podcast
🐘 @glaforge@uwyn.net on #Mastodon
Antoine Sabot-Durand @antoine.sabot-durand.net Java Champion, boardgames and rpg addict. I work at @SCIAM.fr. Former Jakarta EE CDI spec lead. I’m also the co creator of the @vidocq.dev MicroProfile implementation.
Benjamin Nothdurft @dataduke.bsky.social 🎤 Community, Leadership, Java, Cloud
🏅 8x Oracle ACE Pro, JUG Leader
🌍 San Francisco, CA <> Jena, GER
🔗 www.linktr.ee/dataduke
BurgerJavaDev @burgerjavadev.bsky.social Java Developer since JDK 1.1
Backend developer with microservices on OpenShift
Interested in all Java topics
Sharat (Shar) Chander - 🟦🌊 @sharatchander.bsky.social 🏳️🌈🇺🇸🇨🇦🇮🇳🇺🇦 #DemocracyMatters | #Java #DevRel at #Oracle | Previously at Sun Microsystems, Verizon, & Bell Atlantic | University of Maryland (Undergrad) and Loyola University, Baltimore (MBA) | 70s rock and R&B, 80s alternative and Rap lover | Views mine
Bruno Borges @brunoborges.bsky.social Empowering developer communities.
Mark Reinhold @mreinhold.org Chief Architect, Java Platform Group, Oracle · Views are my own · https://mreinhold.org
Gerrit Grunwald @hansolo.eu JUG Founder, Java Champion, IBM Champion, ❤️ Java, coding in general, mountain biking and photography...may the force be with you... http://gravity-labs.de
Ingo Kegel @ingokegel.bsky.social Building JProfiler & install4j at ej-technologies. Java expert since the early days. Deep dives into profiling, performance, and build tools.
Nicolai Parlog @nipafx.dev Java enthusiast with a passion for learning and sharing. Developer Advocate at Oracle but views are my own.
Rafael del Nero @rafadelnero.bsky.social 🚀 Mentoring worldwide #Java developers to work with cutting-edge, have more family-time and earn top salaries
🏅 @Java_Champions | Speaker | Book Author
🎯 ®@JavaChallengers
Sven Reimers @sreimers.bsky.social Java Champion,
JUG Leader JUG Bodensee, JTaccuino
Apache NetBeans PMC, OpenJFX author,
Systemengineer @ Airbus Defence and Space
Bruno Souza @brjavaman.bsky.social Since 1995, helping software developers improve their careers and work on cool projects with great people!
Java Evangelist
JCP Executive
SouJava Leader
Patrick Bien @patrickbien.bsky.social 🎛️ music producer 📸 Visual Creator
🤘 MTBer 🥁drummer 🎸 guitarist
📍🇩🇪 18 y/o
Devoxx Belgium @devoxx.com Devoxx Belgium 2026 : 5 - 9 October in Antwerp
Johan Vos @johanvos.bsky.social Java Champion, Gluon and LodgON.
co-lead OpenJFX, lead OpenJDK-Mobile . Java for science, Quantum Computing. PhD
Sanne Grinovero @sannegrinovero.bsky.social Passionate about reliability, OSS, and efficiency. Java Champion, tech lead in the Quarkus and Hibernate communities, JVM/Linux explorer. Working at IBM, leading various R&D initiatives.
David Delabassée @delabassee.bsky.social Senior Director of Java Developer Relations - Oracle
Views are my own!
Clement Escoffier @cescoffier.bsky.social Quarkus project co-lead. @Redhat Distinguished Engineer @IBM. Java Champion. #quarkus #vertx #smallrye. Rabbit shepherd. Opinions are mine, not of my employer.