Tobias Petry @tpetry.me The Database Guy. I am helping you get better with MySQL and PostgreSQL.
https://goodindexes.com
https://mysqlexplain.com
https://sqlfordevs.com 
Todd Motto @toddmotto.bsky.social 🎉 Building funforms.com
Ólafur Waage @olafurw.com He / Him - Icelander in Norway
https://linktr.ee/olafurw
Martin Fowler @martinfowler.com Software Design Loudmouth. Works for Thoughtworks. Also hikes, watches theater, and plays modern board games. He/him.
host of https://martinfowler.com
Gleb Bahmutov @bahmutov.bsky.social JavaScript ninja, image processing expert, software quality fanatic. Sr Director of Engineering https://gleb.dev/
Nick Ebbitt @nickebbitt.com Manchester JUG leader, Cloud Native Glasgow organiser. Interested in all things platform engineering, Java and communities
Sharat (Shar) Chander - 🟦🌊 @sharatchander.bsky.social 🇺🇸🇨🇦 #DemocracyMatters | #DevRel |Previously at Oracle, Sun Microsystems, Verizon, & Bell Atlantic | University of Maryland (Undergrad) and Loyola University, Baltimore (MBA) | 70s rock, R&B, 80s alternative and Rap lover | Views mine
Kevlin Henney @kevlin.bsky.social consultant · father · he/him · human (very) · husband · itinerant · programmer · keynote speaker · technologist · trainer · writer
Mark Reinhold @mreinhold.org Chief Architect, Java Platform Group, Oracle · Views are my own · https://mreinhold.org
joschi @joschi.work 🦣 Mastodon: https://hachyderm.io/@joschi
🐙 GitHub: https://github.com/joschi
David Delabassée @delabassee.bsky.social Senior Director of Java Developer Relations - Oracle
Views are my own!
Alina Yurenko @alina-yurenko.bsky.social Ukrainian. Love tech, compilers, and open source. Developer Advocate for GraalVM at Oracle. Ambassador of snacks and not running.
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
Jonathan Vila 🥑☕️ - 🇪🇺🇪🇸🇵🇷 @vilojona.bsky.social Senior Staff Developer Advocate 🥑 @Sonar | Java Champion | Oracle ACE | IBM Contributor | Conference cofounder JBCNConf & DevBcn & AI4Devs | BarcelonaJUG organiser
Bert Jan Schrijver @handle.invalid CTO @OpenValue.eu, JUG leader @NLJUG.bsky.social. J-Fall/Spring organizer, @JavaChampions.bsky.social, @iSAQB.bsky.social, JavaOne rock star speaker, Duke’s choice award winner, Java/architecture/CD/DevOps.
Corneil du Plessis @corneil.bsky.social He/Him.
Problem solver.
Scientific thinker.
Delivering code to production since 1985.
Ex-@spring.io Team
Speaker (only diverse panels)
Opinions are my own.
#KFSM, #NoCrypto, 🇺🇦
Kevin Wittek @wittek.dev Engineering Manager and Tech Lead at Docker, doing AI & Testcontainers, guitar & simracing, husband & dad
Stefano Cordio @scordio.github.io Software Engineer @ EPAM Systems
Maintainer of @assertj.github.io
Marcus Hellberg @marcushellberg.dev Applied AI Researcher, Speaker, DevRel expert.
Java Champion.
VP of AI Research @vaadin.com
Sven Reimers @sreimers.bsky.social Java Champion,
JUG Leader JUG Bodensee, JTaccuino
Apache NetBeans PMC, OpenJFX author,
Systemengineer @ Airbus Defence and Space
Nicolas Fränkel 🇪🇺🇺🇦🇬🇪 @frankel.ch 🧑💻 Developer and architect
🥑 Developer Advocate
✍️ Blogger @ https://blog.frankel.ch/
🎓 Eternal learner
📖 Book author at http://leanpub.com/integrationtest
Gunnar Hillert @hillert.bsky.social Spring Developer, Java Champion, 2019 Kona IRONMAN Finisher, formerly @oracle @pivotal @vmware @spring.io @atlantajug @devnexus. Plant collector. Board member at Hawaii Island Palm Society.
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
Todd Ginsberg @todd.ginsberg.com #Java and #Kotlin developer. @trijug.dev organizer. Conference speaker. Gatherers4j maintainer, Philatelist. Big fan of doughnuts and F1. Raleigh, NC He/Him 🇺🇸🇨🇦
Mads Opheim @madsopheim.com Sosialist, feminist, Java, Kotlin, Jakarta EE, MicroProfile. Styremedlem i Raudt Oslo. Oracle ACE. IBM Champion. Rosenborg herrar og kvinner. He/him.
Ted M. Young (he/him) aka @JitterTed @ted.dev #Java coach/consultant/streamer. Maker of "JitterTed's TDD Game" https://tdd.cards
Live streaming my coding mistakes at https://JitterTed.Stream and https://JitterTed.TV
#Refactoring #JUnit #TDD #TestableArchitecture #DomainDrivenDesign #Ensembling #LGM
Michael Simons @rotnroll666.bsky.social 👨👩👦👦👨🏻💻🚴🏻 – Father, Husband, Developer, Athlete. Author of Spring Boot Buch, and DuckDB in Action with Manning. Java champion working at Neo4j on various integrations within the JVM ecosystem.
More: https://michael-simons.eu
Patrick Baumgartner @patbaumgartner.com Working @42talents. Spring Trainer @VMwareTanzu. Co-Organizer @VoxxedZurich, Board member of @jugch, Software Crafters Zurich & SoCraTes Conf Switzerland
Gerrit Meier @meistermeier.com Completely random internet person (https://meistermeier.com)
Father and husband
Owned by cat
Doing #Java things at #Neo4j.
Organizer of the Java User Group Ostfalen (https://jug-ostfalen.de)
Sven Ruppert @svenruppert.com Java and Security by day, Bushcrafting by night
Aleksey Shipilëv @shipilev.bsky.social In love-hate relationship with machines. Currently: OpenJDK, AWS. "Trust me, it's really me" backlink: https://shipilev.net/#social
Thomas Vitale ☀️ @thomasvitale.com Software Engineer 📚 Author of “Cloud Native Spring in Action” 🛳️ CNCF Ambassador ☕️ Java Champion 🍃 Creator of @arconia.io for Spring Boot 🎙️ International Speaker 👨💻 OSS. Work with Java and Cloud Native.
Kaivalya Apte @thegeeknarrator.bsky.social Podcaster, Youtuber @TheGeekNarrator
(https://youtube.com/@thegeeknarrator?si=yN0zWNDAScJKv_QZ) Databases, Stream processing, Distributed systems Software Engineer @Confluent
Johannes Bechberger @mostlynerdless.de OpenJDK hacker at SapMachine, works on hello-ebpf for fun
Max Rydahl Andersen @maxandersen.xam.dk Quarkus co-lead - Distinguished Engineer, Red Hat. Creator of https://jbang.dev
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.
Johan Hutting @johanhutting.bsky.social Senior software engineer / Developer advocate @ ING, co-organiser JUG Noord and ING backend summit.
Opinions expressed are my own.
Devoxx UK @devoxx.uk A Developer Community Conference
Devoxx Belgium @devoxx.com Devoxx Belgium 2026 : 5 - 9 October in Antwerp
@jocosti.bsky.social @jocosti.bsky.social 
Foojay, the Friends Of OpenJDK @foojay.io Foojay.io is the central resource for the Java community’s daily information needs, a place for friends of OpenJDK, and a community platform for the Java ecosystem — bringing together and helping Java professionals everywhere.
Quarkus @quarkus.io Supersonic Subatomic Java
Jakarta EE @jakarta.ee Hosted by the @eclipse.org, Jakarta EE is focused on enabling community-driven collaboration and open innovation for the cloud.
https://jakarta.ee/
Dan Vega @danvega.dev 🍃 Spring Developer Advocate @Broadcom
☕️ Java Champion
📹 YouTuber http://bit.ly/3zJb93b
🎙️ Podcast http://bit.ly/3Tzi0CO
🤖 ByteSized AI http://bit.ly/3XYv87j
Jakub Chrzanowski @chrzanowski.info 🥑 Lead Developer Advocate @JetBrains.com for IntelliJ Platform
🧩 Helps make JetBrains products extensible
🛠️ Builds useful stuff
🦬 Suffers from yak shaving
George Adams @gdams.bsky.social Go Group Manager @Microsoft, Java Champion, Chairman @adoptium.
Thoughts are my own.
Dion Almaer @almaer.com Bringing nuance to a knife fight 🔪, surprisingly older than @bgalbs
Past: Ajaxian, Shopify, Google, Mozilla, webOS, and more!
Andres Almiray @andresalmiray.com I code for fun and help others in the process. Java Champion. Co-founder of Hackergarten & Hack.Commit.Push. Creator of JReleaser
🚀
Anton Arhipov @antonarhipov.bsky.social Developer Advocate @ JetBrains
https://antonarhipov.com
#java #kotlin #programming
Brian Benz @bbenz.bsky.social Microsoft AI Advocate. Certified stunt coder
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
Jeanne Boyarsky @jeanneboyarsky.bsky.social Software developer in NYC, Java Champion, FIRST FRC mentor, CodeRanch moderator, Toastmaster. Author of OCP Java Certification Study Guides and "Real World Java: Helping you Navigate the Java Ecosystem".
More about me at https://linktr.ee/jeanneboyarsky
Tom Cools @tomcools.be DevRel @Timefold | Conference (Keynote) Speaker 🗣️ | #Java Champion | @BeJUG Organizer | Kind of a weird guy 😅
Holly Cummins @hollycummins.com @IBM - Senior Principal Software Engineer, working on Quarkus. Java Champion, developer, author, #cloud surfer and maker. My views are my own.
Eric Deandrea @ericdeandrea.dev @java-champions.bsky.social | Sr. Principal Software Engineer (@quarkus.io) @IBM | speaker | author | @bostonjavausers.bsky.social Vice Chair & board member | tinkerer | boater | black belt in martial arts | Opinions are my own
Brian Demers @bdemers.io Father, Geek 🤓, Beekeeper 🐝, Java Champion ♨️, and Developer Advocate 🥑 at Gradle
Marit van Dijk @maritvandijk.bsky.social 💻 Software Developer | ☕🥑 Java Developer Advocate @ JetBrains | 🏆 Java Champion | 🎤 International Keynote Speaker | 👩💻 Pronouns: She/her
https://maritvandijk.com/
Sergei Egorov @bsideup.github.io Cloud builder. Java Champion. @testcontainers co-creator. Prev: CEO/co-founder at @AtomicJarInc (acqd by @docker), StaffEng at @Pivotal/@vmware, @zeroturnaround.
📍 Boulder, CO 🏔️
Markus Eisele @myfear.com Developer, turned to consulting, developer relations, sales, and landed in marketing.
Writing books for #Oreilly.
Into Java, Kubernetes and such.
Legal called to tell you that I'm not officially speaking for IBM.
Hanno Embregts 🎤🎸 @hanno.codes Java Developer 💻 by day, musician 🎤🎸 by night. A bit of both at developer conferences.
🏆 Java Champion
♠️ Oracle ACE Pro
🎟️ NLJUG Leader
👨🏼💻 Trainer / Technology Advocate at Info Support
🔗 hanno.codes
🇺🇦🏳️🌈🌱 Code for good
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
Richard Fichtner 💻☕ @richard.fichtner.dev CEO of @xdev.software, Loves Java ❤️☕, Java Champion, Founder JUG Oberpfalz, Co-organizer @jcon.one, IBM Champion, Oracle Ace, Vaadin Champion, Dongolorian, Father and Husband
Viktor Gamov @gamussa.dev Principal Developer Advocate at @confluent.io, ☕️Java Champion, Co-author Kafka in Action, Flink aficionado
Trisha Gee @trishagee.bsky.social Java Champion, Developer Productivity Advocate, Author
https://trishagee.com
https://linktr.ee/trisha_gee
🇪🇸🇬🇧🇪🇺
David Gómez G. @dgomezg.bsky.social JavaChampion. @madridjug.es co-organizer. I love doing stuff with other people, learning from others & sharing what I know.
Rodrigo Graciano @graciano.bsky.social Java Champion, NYJavaSIG leader, Software Engineer
Ivar Grimstad @theguywiththeduketattoo.com Java Champion | Jakarta EE Developer Advocate | The guy with the Duke tattoo
https://jakarta.ee/community/developer-advocate/
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
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
Arun Gupta @arungupta.bsky.social 
Mark ⚡️Heckler @mkheck.bsky.social Computer scientist & MBA, pilot, inglés y español. Java Champion, Google Dev Expert in Kotlin, Rockstar presenter, author of Spring Boot: Up & Running. Ex Oracle, Pivotal, VMware, Microsoft, Moderne
Daniel Hinojosa @dhinojosa.bsky.social Developer of sorts: Typically Java, Scala, and Haskell once in a while.
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
Angie Jones @angiejones.tech Tech's Favorite Auntie
VP Eng, AI Tools & Enablement @ Block
#techgirl1908
Jason Lee @jasondlee.bsky.social Christian. Husband. Father. Bassist. Martial Artist. Java Champion. Nashville recording artist. Software engineer @ Red Hat. @OKCJUG President. Opinions are mine, but can be yours. You can find me on X: https://x.com/jasondlee
evanchooly @evanchooly.bsky.social Java Champion. Kotlin fanatic. Bit twiddler. New Yorker. Pronounces it jif. SSE at @Datadog. @evanchooly@mastodon.social
Josh Long 🍃 @starbuxman.joshlong.com Spring Developer Advocate
Java Champion
Kotlin Google Dev Expert
https://YouTube.com/@coffeesoftware
https://github.com/joshlong
Dervis Mansuroglu @dervis.bsky.social Leading the Norwegian JUG in Oslo, Java Champion, speaker, developer and principal officer at NAV IT (Norwegian gov).
Simon Martinelli @martinelli.ch Java Champion, Vaadin Champion, Oracle ACE Pro, Published Author, International Speaker, Programming Architect, and Lecturer for AI-driven Software Engineering, Software Architecture, Java, Persistence, and DevOps.
https://martinelli.ch
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.
Eddú Meléndez Gonzales @eddumelendez.bsky.social 🇵🇪 Java Chavo, Software Engineer and Open Source Contributor. Working on Testcontainers. Opinions are my own.
Ana-Maria Mihalceanu @ammbra1508.bsky.social
Java Champion Alumni | Architect| Sr. Developer Advocate @Oracle 🇳🇱 | Speaker | Co-founder@BucharestSCC. Opinions are my own. 
Gunnar Morling @gunnarmorling.dev Technologist @ Confluent · Ex-lead of Debezium · Spec lead of Bean Validation 2.0 · Creator of Hardwood, kcctl, JfrUnit, MapStruct · Java Champion · morling.dev · 🚴
Maarten Mulders 💙💛 @mthmulders.bsky.social Architect, developer, trainer & speaker @ Info Support. Also Java Champion and Oracle ACE Pro. Other: food, music & photography. Views are my own; interpretations are yours.
Charles Oliver Nutter @headius.bsky.social JRuby co-lead, Java champion, Ruby hero, JavaOne Rockstar, international traveler and speaker. Book me for your next event! I depend on your donations and sponsorships! https://github.com/sponsors/headius
Daniel Oh @danieloh30.bsky.social Java Champion, CNCF Ambassador & TAG DevEX Co-Chair, Microsoft MVP, Developer Advocate, Technical Marketing, Keynote Speaker, Published Author bit.ly/danielohtv
Nicolai Parlog @nipafx.dev Java enthusiast with a passion for learning and sharing. Developer Advocate at Oracle but views and posts are my own.
Pratik Patel @prpatel.dev master builder of nachos
software . technology . not a bot
Julien Ponge @julien.ponge.org Software enthusiast | Scientist | #JavaChampions | Personal account, not the views of my employers | I will not discuss much politics here
https://julien.ponge.org/
🥼 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 Raible @mraible.bsky.social Software engineer with a passion for skiing, mountain biking, VWs, and good 🍺. Driving a '66 21-window & a '90 Syncro. Made in Montana. https://raibledesigns.com
Ixchel Ruiz @ixchelruiz.bsky.social Assiduous traveler, Software Developer, Java Champion, CDF Ambassador, Open Source advocate, public speaker and mentor.
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.
jbáruch 🎩 @jbaru.ch Head of DevRel at @tweetsbyport - the Agentic SDLC Platform. Co-author of #LiquidSoftware and #DevOps Tools for #Java Developers. Java Champion, MSFT MVP for AI, CNCF Ambassador Alumni.
Brian Sam-Bodden (BSB) @bsbodden.bsky.social Polyglot Programmer, Technologist, Author, and Entrepreneur. Applied AI/ML and Data Science. Former Principal Applied AI Engineer at Redis. Former Developer Advocate 🥑 @Java_Champions
Oleg Šelajev @shelajev.bsky.social Oleg Šelajev is a developer advocate at Docker working mainly on developer productivity, Testcontainers, improving how we set up local development environments and tests, and building applications with AI parts. Developer. Author. Speaker. Java Champion. D
Nate Schutta @nts.bsky.social Java Champion. Speaker. Author. Architecture Monkey. Storyteller.
http://ntschutta.io
Ray Tsang @saturnism.me Loves Java, Cloud, and Developer Productivity. Java Champion.
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