@sajanssens.bsky.social @sajanssens.bsky.social 
@timveijndhoven.bsky.social @timveijndhoven.bsky.social 
Ruud @ruud.online Software engineer from the Netherlands. Always looking for new stuff to learn. https://www.ruud.online
Balkrishna Rawool @balarawool.bsky.social Java | Spring | OOP & FP |
Debugging apps using System.out.println() since 2003.
Roy Braam @rbraam.bsky.social OpenValue Amsterdam | Conference speaker | Board member Amsterdam JUG | Love to share knowledge | Father of 2 | Does something with Computers
Jens Knipper @jensknipper.de Software Engineer working for @openvalue.eu
Blogging on jensknipper.de
Michaรซl van de Giessen @tubby.nl Java web developer at http://intractief.nl , #satisfactory gamer, #lanparty fossil, #UX freak, #coderdojo and #devoxx4kids mentor, actually partly javanese https://tubby.nl
Hanno Embregts ๐ค๐ธ @hanno.codes Java Developer ๐ป by day, musician ๐ค๐ธ by night. A bit of both at developer conferences.
๐ Java Champion
โ ๏ธ Oracle ACE Pro
๐๏ธ NLJUG Leader
๐จ๐ผโ๐ป Trainer / Technology Advocate at Info Support
๐ hanno.codes
๐บ๐ฆ๐ณ๏ธโ๐๐ฑ Code for good
@bert-breeman.bsky.social @bert-breeman.bsky.social 
Tentegen @tentegen.bsky.social
Specialist in Everything - Master of nothing.
If you follow me.....expect the occasional timeline cleanser in the form of shared art or shitposts.
Constant doom isn't healthy.
Cara Page: https://cara.app/tentegen
Ko-fi: https://ko-fi.com/tentegen
Maaike Schoon @maaikeschoon.bsky.social Journalist / Buitenhof / Politiek / Economie / Woningmarkt / like = bookmark / Foto: Keke Keukelaar
Substack: https://maaikeschoon.substack.com/p/waarom-jij-geen-huis-kunt-betalen
Tom Cools @tomcools.be DevRel @Timefold | Conference (Keynote) Speaker ๐ฃ๏ธ | #Java Champion | @BeJUG Organizer | Kind of a weird guy ๐
Ionut Balosin @ionutbalosin.bsky.social ๐จโ๐ป Principal IT Architect โข ๐ Technical Trainer โข ๐ Java Champion โข โ ๏ธ Oracle ACE Associate โข ๐ Security Champion โข ๐ค Speaker โข โ๏ธ Blogger โข ๐ www.ionutbalosin.com
Lutske van der Meer @lutskedev.bsky.social Software Engineer @Craftsmen | Speaker | Community builder
Full-stack dev with a focus on Java, Angular & AI.
Passionate about Machine Learning, cats ๐พ, and sharing knowledge.
Advocating for diversity as a woman in tech.
ApeldoornJUG, JUGNoord,Devoxx4Kids
Hubert Klein Ikkink @mrhaki.com Love to develop applications with gr8 technologies at JDriven. Interested in #java, #groovy, #clojure, #kotlin, #asciidoctor, #micronaut, #gradle. โจhttps://www.mrhaki.com ๐ณ๐ฑ๐ช๐บ๐ณ๏ธโ๐
Vasco Veloso @vasco-veloso.bsky.social A helicopter view of life and tech. More tech, really.
Johan Hutting @johanhutting.bsky.social Senior software engineer / Developer advocate @ ING, co-organiser JUG Noord and ING backend summit.
Opinions expressed are my own.
Rijo Sam @rijosam.com Java Chapter Lead @ ABN AMRO | Public Speaker
Loves Java โ | Cycling ๐ด๐ฝโโ๏ธ | Burgers ๐
rijosam.com
@josroseboom.bsky.social @josroseboom.bsky.social - A @alexarana.bsky.social @alexarana.bsky.social
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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
Michel van Dongen @michelvandongen.bsky.social Director Software Engineering at adesso NL | Manager Blue4IT | co-leader Utrecht Java User Group
Jan Ouwens @jqno.nl Developer โฆ Java/JVM โฆ EqualsVerifier โฆ speaker โฆ @yoink.nl but opinions mine โฆ ๐จโ๐ฉโ๐ง โฆ ๐ณ๐ฑ๐ช๐บ โฆ ๐๐ป โฆ ๐ โฆ ๐บ๐ฆ๐ป โฆ he/him
Martin @martinvisser.bsky.social I know how to write Kotlin and Java (see, I just did) @openvalue.eu
KP @kapej.com Open Accelerator | Building Tech Tribes | Social Entrepreneur | Open Source Advocate | Community Builder | Fryslรขn | Tech Nerd | Family Man | Padel Player | Lazy Runner
BULL MEN ๐ฅ @bullust.bsky.social 30 Age Bull ๐ฅ๐ฅ
Uncle Joe @sydseter.com Co-leader OWASP Cornucopia. If you like what we do for open source, visit our code repository https://github.com/OWASP/cornucopia and give us a star โญ
๐ ยซDifference is of the essence of humanityยป ๐ฆ โ John Hume
#appsec #owasp #cornucopia #threatmodeling
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.
Theo Sanderson @theo.io researching viral pathogen genomics at @lshtm.bsky.social, building @pathoplexus.org | theo.io / sandersonlab.org
@garygrady.bsky.social @garygrady.bsky.social 
Jan-Hendrik Kuperus @jhkuperus.bsky.social Founder & Director @Yoinknl | GSF Champion
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Marit van Dijk @maritvandijk.bsky.social ๐ป Software Developer | โ๐ฅ Java Developer Advocate @ JetBrains | ๐ Java Champion | ๐ค International Keynote Speaker | ๐ฉโ๐ป Pronouns: She/her
https://maritvandijk.com/
Eric Wastl @was.tl Created http://adventofcode.com, http://compute-cost.com, http://anoik.is, http://was.tl/projects/; Principal Architect at https://acvauctions.com
Liroy Leshed @liroy.bsky.social Founder & CEO of 21tycoons. Makers of TYCOON (CRM), Bonfire (https://bonfirehq.com), and Squeezer. email me at liroy@tycooncrm.com.
https://tycooncrm.com | https://squeezerhq.com
Advent of Code @adventofcode.bsky.social Placeholder for @was.tl's Advent of Code
Max Verstappen Fan @maxverstappen.bsky.social Max Verstappen fan account. Has no connection with Max Verstappen or Red Bull Racing.
@ejnark.bsky.social @ejnark.bsky.social 
Miro Wengner @mirowengner.bsky.social @Java_Champions, @oracleace, Software Engineer, OpenJDK, @Robo4J, Published Author, father, husband, data geek and dreamer
https://partnerships.packt.com/interview-with-miroslav-wengner/
Stefan Poindl @tohuwabohu.io Senior Software Engineer at OpenValue Vienna. Likes to write about tech related shenanigans.
Jaap Coomans @jaapcoomans.nl Father | Husband | Developer | Java | Kotlin | @brabantjug.nl leader | Speaker | Craft beer sampler | Board game player | Willem II ๐ดโช๐ต| He/him
Kaya Weers @kayaweers.bsky.social Java developer with a great love for innovation | Conference speaker | Likes to play soccer and travel the world
Tom Wigleven @tomwigleven.bsky.social Principle Engineer @ OpenValue
Paulien van Alst @paulienvanalst.bsky.social Software engineer and speaker @OpenValue | Kotlin - Java | @Kotlin | @JUGNoord co-organiser | ๐ณ๐ฑ๐ซ๐ท
https://sessionize.com/paulien-van-alst/
@mauropalsgraaf.bsky.social @mauropalsgraaf.bsky.social 
Chris Romkema @c-romkema.bsky.social Software engineer @ OpenValue Utrecht.
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Frank @walinga.dev 
Sascha Selzer @tommy1199.bsky.social 
Piet van Dongen @pietvandongen.com (Software) enthusiast @openvalue.eu. Value hypothesis loop focused. iSAQBยฎ Accredited Software Architecture Trainer. He/him.
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
@malagajug.bsky.social @malagajug.bsky.social 
Madrid JUG @madridjug.es Madrid Java User Group (MadridJUG) es un grupo de desarrolladores cuyo interรฉs es compartir el conocimiento y realizar actividades en torno a Java y la JVM
RotterdamJUG @rotterdamjug.bsky.social Follow this account to get updates on meetings by the RotterdamJUG (Java User Group).
Amsterdam Java User Group @amsterdamjug.bsky.social 
Brabant JUG @brabantjug.nl Java User Group for the province of North-Brabant. Community for anyone interested in Java and Open Source in or around Brabant.
Madrid Java/JVM User Group @madridjug.bsky.social Hemos actualizado nuestro usuario de bluesky a @madridjug.es. ยกSiguenos en https://bsky.app/profile/madridjug.es!
Virtual Java User Group @virtualjug.bsky.social Hi from VirtualJUG (vJUG), the world's first online-only Java User Group. Join us, and the best Java experts in the community!
Java User Group Switzerland @jugch.bsky.social Java User Group Switzerland aims at promoting the application of Java technology in Switzerland. We run events in Basel, Berne, Lucerne, St. Gallen, Zurich, and online.
Portland Java User Group @pjug.bsky.social Portland Oregon
Seattle Java User Group @seattlejug.bsky.social Java User Group of the Greater Seattle Area
https://meetup.com/seajug
https://seajug.org
https://twitter.com/seattlejug
https://fosstodon.org/@seattlejug
Boston Java Users ACM Chapter @bostonjavausers.bsky.social Formerly the New England Java Users Group (NEJUG). Visit us on Meetup to see upcoming events and to join: https://meetup.com/nejug1
@java-user-groups.bsky.social @java-user-groups.bsky.social 
JUG Hannover @jughannover.bsky.social Java User Group Hannover, Germany
๐ https://x.com/jugHannover
๐ https://ijug.social/@jughannover
๐ https://www.meetup.com/de-DE/java-user-group-hannover/
JUG Noord @jugnoord.bsky.social Java User Group for the northern Dutch provinces with a focus on JVM languages such as Java and Kotlin. We'll be hosting events in both Friesland and Groningen.
Organisers: @johanhutting.bsky.social @paulienvanalst.bsky.social @lutskedev.bsky.social
LaurensLeeuwis @leeuwis.eu 
Anton de Ruiter @aruit.bsky.social Manager Java Belastingdienst
Paco van Beckhoven @devpaco.bsky.social ๐จ๐ญ๐ Software engineer @hexagon_dr |
Studied software engineering @UvA_Amsterdam | Conference speaker | Running | Climbing | Skating | Gaming
Vincent Heet @vincentheet.bsky.social Principal Engineer, Software, DevOps, Cloud infrastructure, Kubernetes. Working at Topicus.
Ben Linders @benlinders.bsky.social 
Cees Bos ๐จ๐ปโ๐ป ๐๐๐ โ
@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.
๐ฅ๏ธ @openvalue.eu as a software & observability engineer and SRE.
๐ ceesbos.nl
Makan Sepehrifar @makan1869.bsky.social Infinityโฆ and Beyond
Raphael De Lio @raphaeldelio.dev AI Engineer | Software Engineering | Forward Deployed Engineer @ Redis (@redis.io)
https://raphaeldelio.com | https://youtube.com/raphaeldelio | https://linktr.ee/raphaeldelio
Hinse ter Schuur @coduinix.bsky.social ๐ณ๐ฑ Software Engineer @ SDB | #Java | Speaker ๐ฃ | he/him
Robert Scholte @rfscholte.bsky.social Founder/owner Sourcegrounds, Java Champion, former Maven chairman, international speaker, bookreviewer
Apeldoorn JUG @apeldoornjug.bsky.social Bringing together Java developers in the Apeldoorn area (The Netherlands). Follow us to keep up with events in the community! The Apeldoorn Java User Group is an initiative of Belastingdienst, Kadaster, Luminis & Profit4Cloud.
www.meetup.com/apeldoornjug
Steffan Norberhuis @snorberhuis.bsky.social AWS & DevOps | Founder Rocketleap
Ramon Wieleman @rwieleman.bsky.social Founder of Code Nomads | Conference Speaker | Interested in Productivity, Software Technology, Media, Sports | Certified Beer Taster
Daniel Lobรฃo @lobaorn.bsky.social ๐ง๐ท | Backend Engineer na Bitso | Entusiasta de Java, JVM e Open-source. Especialista em desempenho e modernizaรงรฃo. Resolvedor de problemas e construtor de consensos. Casado e paizรฃo de 2 garotos.
Artem @artemy.nl err and err and err again, but less and less and less
OpenValue @openvalue.eu Better software, faster. Java & full stack development, consultancy and training. Read more on http://openvalue.eu and http://openvalue.training.
Roy van Rijn @royvanrijn.com Director of OpenValue Rotterdam, is a @Java_Champions, founder of Rotterdam JUG, public speaking: Java, AI, math, algorithms
Devoxx Belgium @devoxx.com Devoxx Belgium 2026 : 5 - 9 October in Antwerp
Ron Veen @ronveen.bsky.social Life Long (Java) Developer, Special Agent, Conference speaker and book author
Brian Goetz @briangoetz.bsky.social Java Language Architect at Oracle. Author, Java Concurrency in Practice (http://amzn.to/2nzZnkl). Also, cats.
Jago de Vreede @jagovreede.bsky.social Java Developer | International Speaker | Automate *everything*
Sharat (Shar) Chander - ๐ฆ๐ @sharatchander.bsky.social ๐บ๐ธ๐จ๐ฆ #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
A N M Bazlur Rahman @bazlur.ca Java Champion ๐ Empowering Developers through Speaking ๐ฃ๏ธ Writing โ๏ธ Mentoring ๐ค & Community Building ๐ Published Author ๐ Contributing Editor at InfoQ and Foojay.IO
DNAstack
https://bio.site/bazlur
Books: https://bazlur.ca/books/
@boukenijhuis.bsky.social @boukenijhuis.bsky.social 
Voxxed Days Zรผrich @voxxedzurich.bsky.social Community Developer Conference in Zurich, Switzerland, taking place on 25 March 2025.
Alexander Chatzizacharias @glycin.bsky.social 
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
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, Dukeโs choice award winner, Java/architecture/CD/DevOps.
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
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