Willem Jan Glerum @wjglerum.nl Principal Software Engineer @ Lunatech
https://wjglerum.nl
spacealpaka @spacealpaka.bsky.social he/him • politics • #SteelersNation • software • antifa • union man • grüner GR am Land • MAMIL • dorffeuerwehr • boom bap • trek > war • Mühl4tel (now), Linz & Szkgt (past)
Jeroen Heijmans @jeroenheijmans.nl Coding | Cooking | Gaming. He/him. Also on Mastodon at: https://mastodon.social/@jeroenheijmans
Kim Fletcher @kimfletcher.bsky.social Event Operations & Community Leader | Organised Devoxx UK | Volunteer Manager: AI Native DevCon & StateOfOpenCon | Leader of the Virtual Java User Group
Bas @basdegroot.bsky.social 
Ante Tomić @ speaking DevOxxUK! 🇭🇷🦆 | 💻📷🎙 @antetomic.bsky.social @antetmc2 Twitter/X ~ Senior Software Engineer at Infobip 🦄 🇭🇷 ~ Community/conference speaker 🎙 ~ Hobby photographer & traveler & blogger 📸🧳✈️ ~ Zagreb, Croatia
Régina ten Bruggencate @reginatb38.bsky.social Java developer, Member of Duchess, Java Champion and working for Trailblazers. Loves walking, geocaching, photography and playing historical figures.
JobRunr @jobrunr.bsky.social An easy way to perform background #job #processing in #java. Distributed and backed by persistent storage. Open-source and free for commercial use.
Fofo🔥🔥 @aichalaafia.bsky.social Java Software engineer ☕ |Speaker🙌🏻 | Green Tech Advocate 🌍 | WomenTechmakers Ambassador👩🏻💻 | JetBrains Community Contributor | Foodie lover & F1 🏎 fan ✨️
Rick Ossendrijver @rickossendrijver.bsky.social 
François Martin @fmartin.ch 
Ionut Balosin @ionutbalosin.bsky.social 👨💻 Principal IT Architect • 🎓 Technical Trainer • 🏆 Java Champion • ♠️ Oracle ACE Associate • 🔑 Security Champion • 🎤 Speaker • ✍️ Blogger • 🌍 www.ionutbalosin.com
@lizeraes.bsky.social @lizeraes.bsky.social - A Andy Bailey @andybailey.bsky.social Java dev since it started.
Mark Hazell @mrhazell.bsky.social Devoxx UK organiser
Voxxed co-founder
Piotr Olaszewski @piotrooo.bsky.social 👷🏻♂️ Software Architect at Thulium
☕️ Java
🤷♂️ All opinions are mine and only mine
DevConf @devconf.co.za www.devconf.co.za
Michel van Dongen @michelvandongen.bsky.social Director Software Engineering at adesso NL | Manager Blue4IT | co-leader Utrecht Java User Group
Martin @martinvisser.bsky.social I know how to write Kotlin and Java (see, I just did) @openvalue.eu
Cristian Schuszter @cschuszter.bsky.social Geek
KP @kapej.com Open Accelerator | Building Tech Tribes | Social Entrepreneur | Open Source Advocate | Community Builder | Fryslân | Tech Nerd | Family Man | Padel Player | Lazy Runner
Tim te Beek @timtebeek.github.io Staff software engineer at Moderne, where I'm the community lead for OpenRewrite.
Nele Lea @nlea.bsky.social Developer and OSS Advocate
Currently on an observability journey @Fiberplane
Previously service orchestration obsessed @Camunda
@lukepham.bsky.social @lukepham.bsky.social 
OpenRewrite by Moderne @openrewrite.github.io OpenRewrite recipes automate security vulnerability remediations, framework migrations, code compliance and more—across a growing language and technology ecosystem.
Maintained by Moderne.ai
GitHub: http://github.com/openrewrite
Daniel Krook @krook.net Senior Director of Developer Experience at @cncf.io @linuxfoundation.org, ex-IBM Principal Engineer, and founding CTO of Call for Code. Focused on serving the maintainers, contributors, and users in the community of 200+ CNCF open source projects.
Voxxed Days Amsterdam @amsterdam.voxxeddays.com Accelerate your skills at Voxxed Days Amsterdam on April 1st and 2nd, 2026! The conference for the next generation of developers.
Roland Weisleder @rweisleder.de Independent Java Software Developer and Consultant.
Bringing Legacy Java Systems Into the Future.
Daniel Garnier-Moiroux @garnier.wf Fiddler of things. Makes computers go beep-boop 🤖 Contributor to Spring Security. Spring Meetup Paris. 🍃
Certified Java Champignon 🍄
dimitris Doutsiopoulos @ddoutsiopoulos.bsky.social 🎬 Photographer & Creative Director
𝘍𝘪𝘯𝘥𝘪𝘯𝘨 𝘸𝘢𝘺𝘴 𝘵𝘰 𝘤𝘳𝘦𝘢𝘵𝘦 𝘢𝘵𝘮𝘰𝘴𝘱𝘩𝘦𝘳𝘪𝘤 𝘴𝘤𝘦𝘯𝘦𝘴
📷🎥 Events | Conferences | Commercials
🌍International Clientele
📸✈️ Travel & Explore
Barbara Teruggi (She/Her) @bantera13.bsky.social Security Architect | Opinions expressed are my own | Proud music addict 🎶 | Amateur Climber 🐒
https://www.linkedin.com/in/barbara-teruggi
Stefan Poindl @tohuwabohu.io Senior Software Engineer at OpenValue Vienna. Likes to write about tech related shenanigans.
NLJUG - Dutch Java User Group @nljug.bsky.social NLJUG, the Dutch Java User Group founded in 2003, unites software developers, architects, ICT managers, student, and partners interested in Java tech.
www.nljug.org
Raphael De Lio @raphaeldelio.dev AI Engineer | Software Engineering | Building AI agents @ Redis (@redis.io)
https://raphaeldelio.com | https://youtube.com/raphaeldelio | https://linktr.ee/raphaeldelio
Tom Wigleven @tomwigleven.bsky.social Principle Engineer @ OpenValue
@mauropalsgraaf.bsky.social @mauropalsgraaf.bsky.social 
Chris Romkema @c-romkema.bsky.social Software engineer @ OpenValue Utrecht.
Frank @walinga.dev 
Piet van Dongen @pietvandongen.com (Software) enthusiast @openvalue.eu. Value hypothesis loop focused. iSAQB® Accredited Software Architecture Trainer. He/him.
LaurensLeeuwis @leeuwis.eu 
JCON Conference @jcon.one Java Community Conferences - in-person.
linktr.ee/jcon_conference
Imprint, privacy policy: http://jcon.one
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.
Troy Hunt @troyhunt.com Creator of Have I Been Pwned. Microsoft Regional Director. Pluralsight author. Online security, technology and “The Cloud”. Australian.
Venkat Subramaniam @venkats.bsky.social Programmer, author, speaker, founder Agile Developer, Inc., co-founder of @dev2next Conference, professor @CSatUH
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
Voxxed Days Zürich @voxxedzurich.bsky.social Community Developer Conference in Zurich, Switzerland, taking place on 25 March 2025.
Ramon Wieleman @rwieleman.bsky.social Founder of Code Nomads | Conference Speaker | Interested in Productivity, Software Technology, Media, Sports | Certified Beer Taster
Julien Lengrand-Lambert 🥑👋 @lengrand.fr Head of Developer Relations 🇫🇷🇳🇱🇪🇺🇺🇦 ✨ Sucker for good #DX, #kotlin #GoogleDevExpert ✨, Editor 🇳🇱 #Java magazine . Growing my own food. #devrel #climate
🌐 https://lengrand.fr/
Johan Janssen @johanjanssen.bsky.social Architect at ASML. Conference speaker, JavaOne Rock Star. Chocolateynuget Java packages. InfoQ Java news author.
Brian Goetz @briangoetz.bsky.social Java Language Architect at Oracle. Author, Java Concurrency in Practice (http://amzn.to/2nzZnkl). Also, cats.
@joyofcoding.bsky.social @joyofcoding.bsky.social 
Ron Veen @ronveen.bsky.social Life Long (Java) Developer, Special Agent, Conference speaker and book author
@boukenijhuis.bsky.social @boukenijhuis.bsky.social 
JetBrains @jetbrains.com On a mission to make software development a more productive and enjoyable experience. Make it happen. With Code.
RotterdamJUG @rotterdamjug.bsky.social Follow this account to get updates on meetings by the RotterdamJUG (Java User Group).
Voxxed @voxxed.com Sharing expert knowledge on Java, JVM, Methodology, Cloud, Mobile & Future tech. Follow us for tutorials, presentations and interviews.
Azul @azulsystems.bsky.social Azul provides the world's most trusted Java platform, founded on open source and delivered by the world's largest independent Java engineering team, and is the only company 100% focused on Java.
Paulien van Alst @paulienvanalst.bsky.social Software engineer and speaker @OpenValue | Kotlin - Java | @Kotlin | @JUGNoord co-organiser | 🇳🇱🇫🇷
https://sessionize.com/paulien-van-alst/
AssertJ @assertj.github.io Fluent testing assertions for Java and the JVM
Roy Wasse @roywasse.bsky.social Director and Founder at OpenValue. Better software, faster! Love the Java ecosystem, interested in AGI, BTC, Philosophy and building out businesses.
Jago de Vreede @jagovreede.bsky.social Java Developer | International Speaker | Automate *everything*
Hinse ter Schuur @coduinix.bsky.social 🇳🇱 Software Engineer @ SDB | #Java | Speaker 🗣 | he/him
Cees Bos 👨🏻💻 📉🔍📈 ✅ @ceesbos.nl Observability enthusiast | Grafana Champion | Java Developer
Always looking for ways to improve software with better observability and what new insights can be gained.
🖥️ @openvalue.eu as a software & observability engineer and SRE.
📖 ceesbos.nl
OpenValue @openvalue.eu Better software, faster. Java & full stack development, consultancy and training. Read more on http://openvalue.eu and http://openvalue.training.
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
Jan Ouwens @jqno.nl Developer ◦ Java/JVM ◦ EqualsVerifier ◦ speaker ◦ @yoink.nl but opinions mine ◦ 👨👩👧 ◦ 🇳🇱🇪🇺 ◦ 🖖🏻 ◦ 💚 ◦ 🇺🇦🌻 ◦ he/him
Kevlin Henney @kevlin.bsky.social consultant · father · he/him · human (very) · husband · itinerant · programmer · keynote speaker · technologist · trainer · writer
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
Mark Reinhold @mreinhold.org Chief Architect, Java Platform Group, Oracle · Views are my own · https://mreinhold.org
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.
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, 🇺🇦
Nicolas Fränkel 🇪🇺🇺🇦🇬🇪 @frankel.ch 🧑💻 Developer and architect
🥑 Developer Advocate
✍️ Blogger @ https://blog.frankel.ch/
🎓 Eternal learner
📖 Book author at http://leanpub.com/integrationtest
Patrick Baumgartner @patbaumgartner.com Working @42talents. Spring Trainer @VMwareTanzu. Co-Organizer @VoxxedZurich, Board member of @jugch, Software Crafters Zurich & SoCraTes Conf Switzerland
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.
Johannes Bechberger @mostlynerdless.de OpenJDK hacker at SapMachine, works on hello-ebpf for fun
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
Balkrishna Rawool @balarawool.bsky.social Java | Spring | OOP & FP |
Debugging apps using System.out.println() since 2003.
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
Bruno Borges @brunoborges.bsky.social Empowering developer communities.
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
Frank Delporte @frankdelporte.be #JavaOnRaspberryPi - My "social media focus" is on Mastodon at foojay.social/@frankdelporte, and I will crosspost here. Sorry for the double content if you follow me on both...
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