OpenValue @OpenValue
Better software, faster. Java & full stack development, consultancy and training. Read more on https://t.co/UAw20Ryshl and https://t.co/pDTGxor23T. openvalue.eu NL, DE, AT & CH Joined March 2016-
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How does an AI model actually work? Our colleague @royvanrijn built "The Anatomy of an LLM". This is an interactive walk-through of tokens, vectors and attention. Read our latest Meet the Experts blog story at openvalue.blog/posts/2026/06/…
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Most job interviews happen in meeting rooms. Sascha Selzer's happened in the coffee corner of a conference. No pitch deck. No recruiters. Just a conversation. In our new "Meet the Experts" blog, Sascha shares his personal story as a software developer. 👇 openvalue.blog/posts/2026/04/…
For more information and registration: openvalue.training/mastering-meet…
As of today, OpenValue Training launches "Mastering Meetings: a Developer's Guide to Professional Meeting Attendance." Learn to say "let's park that" with confidence and survive back-to-back meetings without contributing anything. Register at openvalue.training
AI technology is working. Make your organization work with it! Rachèl Heimbach spent 2 yrs implementing AI in a regulated environment. The models are ready — organizations need to catch up. Part 2 of our Vision on AI Impact series 👇 openvalue.blog/posts/2026/03/…
She was standing on the Ajax football pitch, about to give her first-ever tech talk. Three years earlier, she'd never written a single line of code. Meet Simone de Gijt — from speech therapy to senior Java/Kotlin developer, building generative AI at Rabobank. First in our "Meet the Experts" series 👇 openvalue.blog/posts/2026/03/…
Our OpenValue Wrapped 2025 is here! How many cups of coffee? How many AI pair programming sessions? And did we deploy on Fridays? Watch the GIF to find out👉 #OpenValueWrapped #BetterSoftwareFaster
@royvanrijn We are ready to welcome you all!
Join the OpenValue community drinks of @Devoxx at Bier Central in Antwerp! We are ready to welcome you all!
It's @Devoxx Belgium week - time for our traditional Wednesday drinks! 🍺 Join the unofficial Devoxx afterparty on Oct 8, 20:00-23:00 at Café Bier Central, Antwerp. Hosted by your OpenValue friends. Everyone welcome - the more the merrier! Free Belgian beers and great conversations guaranteed! #devoxx
Meetup time in our Utrecht office! First up: Artem Makarov talking about reverse engineering
OpenValue retweeted
Amsterdam Jug @OpenValue
Happy Valentine's Day ❤️ They say true love is written in the stars, but at OpenValue, we write it in code. A special Valentine's message that combines our greatest passions: elegant code and the @java ecosystem. #Java #Love #ValentinesDay
Link for more information and registration here: openvalue.training/software-archi…
🏗️ From senior dev to software architect: ready for the next step? Our expert trainers show you the ropes. New iSAQB training dates in Utrecht (Mar/Jun 2025). Watch the video for more reasons for this must-attend training course. Limited spots - level up your career!
🇺🇸 Exciting news! OpenValue expands to the US! Led by Ed Hut, we're bringing our proven JDK migration expertise to North America, helping organizations cut Java licensing costs by up to 80% while maintaining security and compliance. Read more: openvalue.eu/openvalue-us/🚀
OpenValue retweeted
Second talk at the @OpenValue Utrecht meetup: Cees Bos talking about solving issues with OpenTelemetry 👌🏻
OpenValue retweeted
Meetup time at the @OpenValue Utrecht office! First up: @JosRoseboom talking about Spring Modulith
New Meetup: Dec 3rd at OpenValue Utrecht! 📦 Package encapsulation with Spring Modulith - Jos Roseboom 🔍 Solving issues with OpenTelemetry - Cees Bos Free food/drinks & great technical discussions! 17:30 - 21:30 | Few seats left! RSVP: meetup.com/openvalue/even…
Bert Jan Schrijver @bjschrijver
4K Followers 182 Following CTO @OpenValue, JUG leader @NLJUG. J-Fall/Spring organizer, @Java_champions, @iSAQB, JavaOne Rockstar, Duke’s choice award winner, Java/architecture/CD/DevOps.
Roy van Rijn @royvanrijn
5K Followers 332 Following Director of @OpenValue Rotterdam, is a @Java_Champions, founder of @RotterdamJUG, public speaking: Java, AI, math, algorithms 🪨 (also @royvanrijn.com bs)
Brian Vermeer @BrianVerm
7K Followers 850 Following Java Champion | Staff Dev🥑 at @Snyksec | JUG leader @NLJug & @virtualJug | Java | Security | Dutch Air Reserve | Taekwondo Master | Views are my own
Roy Wasse @roywasse
1K Followers 2K Following Co-Founder @ OpenValue. Passionate about Software development. Also see @roywasse.bsky.social
Sharat Chander @shara... @Sharat_Chander
21K Followers 5K Following 🏳️🌈 🇺🇸 🇮🇳 🇺🇦 🇮🇱 🇵🇸 | LEGACY VERIFIED | #Java #DevRel leader | 💜 @u2 & @DepecheMode | @UofMaryland & @LoyolaMaryland grad | Views are mine own
Hanno Embregts 🎤�... @hannotify
2K Followers 668 Following Java Champion 🏆 Oracle ACE Pro ♠️ Java Developer by day ☕️ Musician by night 🎸 A bit of both at conferences 🎤 @InfoSupportBV 👨🏼💻 @NLJUG JUG leader 🎟️
(Inactive) Jan-Hendri... @jhkuperus
399 Followers 253 Following (Inactive) Founder & Director @Yoinknl | GSF Champion | Coder | Architect | Speaker | Nerd | Teacher | Father | Husband | Tinkerer | LEGO | Science Fan | Human
Simon Ritter @speakjava
15K Followers 1K Following Deputy CTO. Java Champion, member Java SE Expert Group, JCP EC, OpenJDK Vulnerability Group and Adoptium SC. AMA about Java and JVM.
Ramon Wieleman @r_wieleman
471 Followers 160 Following Founder of @CodeNomadsNL | Conference Speaker | Interested in Productivity, Software Technology, Media, Sports | Certified Beer Taster
Foojay.io @foojayio
10K Followers 1K Following https://t.co/79DlsBV1yM: a place for friends of OpenJDK (https://t.co/bm1vJXRJlN)! Twitter handle run by @geertjanw, @ypoirier, @bazlur_rahman, @tobiasbriones_!
Karl Heinz Marbaise @khmarbaise
3K Followers 5K Following Apache Maven Project PMC @ASFMavenProject, Apache Software Foundation Member @TheASF, @Java_Champions, Java Developer,CI/CD Fan,Freelancer
Carl Dea ⒻⓍ🕊 @carldea
3K Followers 2K Following Software Developer, Book Author, JavaFX fan, and love AI. Most importantly a husband & proud father. My opinions are my own.
Maarten Mulders 💙�... @mthmulders
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Gerrit Grunwald 🇺�... @hansolo_
9K Followers 1K Following JUG Leader, Java Champion, ❤️ Java, coding in general, mountain biking and photography...may the force be with you... https://t.co/4kMRjNq41Q
Ana Maria Mihalceanu ... @ammbra1508
4K Followers 1K Following Java Champion Alumni | Architect| Sr. Developer Advocate @Oracle 🇳🇱 | Speaker | Co-founder @BucharestSCC. Opinions are my own. 🐘@[email protected]
Sébastien Blanc 🇪... @sebi2706
11K Followers 3K Following Technical Director, Experienced Developer Relations Engineer, husband, speaker, Dad, Open Source, Platform Engineering, Java Champion, 5️⃣😺
Devoxx Greece @DevoxxGR
1K Followers 374 Following Devoxx Greece 2026 (4th edition) takes place from April 23rd to the 25th in the Athens Megaron International Conference Center.
Hendrik Ebbers 👾 @hendrikEbbers
4K Followers 1K Following Helping you to write better Java code & APIs - Java Champion, JavaOne Rockstar, JCP expert group member - ❤️ Star Wars, boardgames, Java and hardrock
Katleho Andrew Twayi @KatlehoTwayi
159 Followers 768 Following Learning about Software, DevOps & breaking down Silo's in organisation's
Product Watch @productwatch_io
274 Followers 1K Following Your Daily Feed of New Tech Products & Startups - https://t.co/BQwoQd3txo
Venlumina @venlumina
0 Followers 300 Following
Yogesh @YogiBuilds
364 Followers 912 Following Got an idea? I got the team and the tech 💻 Full-stack • AI • Design | Flutter • React | Shipping since 2021 DM [email protected]
Pat Dabney @paddyodabb
62 Followers 3K Following
Voxxed Days Ticino @VoxxedTicino
838 Followers 306 Following Developers Conference in Ticino, Switzerland • 6 FEBRUARY 2026 - TICKETS ON SALE - link in bio
Anthony WIsdom @wisdom_ant21529
2 Followers 148 Following
The Capital Telegraph @orderer7
3K Followers 2K Following https://t.co/lYMAqVmled https://t.co/D0JtPjqfah create more value than you take
hawejin @LuisCar08392240
21 Followers 386 Following
daoyuly @ai_daoyu
20 Followers 485 Following Focusing on AI Agent technology and panoramic family butler, we are committed to enabling ordinary families to enjoy aristocratic butler services through AI.
Jonathan Cistin @AnPhan23369878
0 Followers 8 Following
Whiordi @whiordi69478
3 Followers 145 Following
ولو @uolaw_
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Abhishek Thakur @arthakr
1 Followers 96 Following
carlosjmelgar.eth @carlosjmelgar
8K Followers 5K Following beginning to explore job applications | ex coinbase, gitcoin, beach bum
Nixi @nixitest
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Lexter @fano_plane
32 Followers 518 Following
Vladislav baby don’... @uuladzislau
229 Followers 106 Following Муш @tanyametalgear. Работаю над платёжной платформой в большом 🇳🇱 банке днём и над стартапом вечером. Мастер спорта по спорту
Siralot @siralot
12 Followers 95 Following
Juarez Junior, MSc @juarezjunior
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Fabricio Mendes @fbmontemendes
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Mario Navarro🇲🇽 @menavarroc
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ricardocreates @ricardojcreates
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Amod @Amod55665115
2 Followers 18 Following
Dennis van der Salm @DennisSalm
155 Followers 847 Following Automating business processes, sports, nutrition, health and reading books.
Milan Behnam @milan_bhm
7 Followers 161 Following Backend rockstar? Nah, just a passionate coder who loves collaborative problem-solving. Open to coffee chats and new opportunities: [email protected]
NGUETSOP KOMOLO Jér�... @jnguetsop
70 Followers 3K Following
Jeroen Wiert Pluimers... @jpluimers
3K Followers 6K Following Makes things work in .NET/Win32/x64/C#/SQL/Delphi. Surviving rectal cancer. Married a cancer survivor. Responsible for brother with IQᐸ50. ex AdestMusica member
rohit pal @rohitpa36627216
12 Followers 581 Following
Yemil Goicochea @YemDev1
1 Followers 532 Following
ApeldoornJUG @ApeldoornJUG
64 Followers 76 Following Bringing together @Java developers in the Apeldoorn area (The Netherlands). Follow us to keep up with #Java events in the community! Apeldoorn Java User Group.
Annie Salazar @Number59Cat
826 Followers 8K Following I am a management consultant who specializes in computer systems. I also teach business school.
Moussa Mohamed @MoussaM30985800
6 Followers 674 Following
Mehul Bhange @mehul_1806
0 Followers 35 Following
Voss Helios @VossHelios
24 Followers 710 Following I'm a developer who loves building great code in Java, JavaScript. I also write about design patterns, software principles, and my other love: coffee ☕️
Bert Jan Schrijver @bjschrijver
4K Followers 182 Following CTO @OpenValue, JUG leader @NLJUG. J-Fall/Spring organizer, @Java_champions, @iSAQB, JavaOne Rockstar, Duke’s choice award winner, Java/architecture/CD/DevOps.
Roy van Rijn @royvanrijn
5K Followers 332 Following Director of @OpenValue Rotterdam, is a @Java_Champions, founder of @RotterdamJUG, public speaking: Java, AI, math, algorithms 🪨 (also @royvanrijn.com bs)
Tom Cools @TCoolsIT
2K Followers 793 Following DevRel Engineer @TimefoldAI | Conference speaker 🗣️ | #Java | @Java_Champions | @BeJUG Organizer | Teacher and Trainer 👨🏫
Brian Vermeer @BrianVerm
7K Followers 850 Following Java Champion | Staff Dev🥑 at @Snyksec | JUG leader @NLJug & @virtualJug | Java | Security | Dutch Air Reserve | Taekwondo Master | Views are my own
Roy Wasse @roywasse
1K Followers 2K Following Co-Founder @ OpenValue. Passionate about Software development. Also see @roywasse.bsky.social
Hanno Embregts 🎤�... @hannotify
2K Followers 668 Following Java Champion 🏆 Oracle ACE Pro ♠️ Java Developer by day ☕️ Musician by night 🎸 A bit of both at conferences 🎤 @InfoSupportBV 👨🏼💻 @NLJUG JUG leader 🎟️
(Inactive) Jan-Hendri... @jhkuperus
399 Followers 253 Following (Inactive) Founder & Director @Yoinknl | GSF Champion | Coder | Architect | Speaker | Nerd | Teacher | Father | Husband | Tinkerer | LEGO | Science Fan | Human
Bruno Borges @brunoborges
36K Followers 1K Following Brazilian Immigrant 🇨🇦🇧🇷🇺🇸 Java Champion. $MSFT Product Manager for DevRel. Previously @OracleDevs, #Azure DevRel, MSFT OpenJDK. Helps @GitHubCopilot now
Simon Ritter @speakjava
15K Followers 1K Following Deputy CTO. Java Champion, member Java SE Expert Group, JCP EC, OpenJDK Vulnerability Group and Adoptium SC. AMA about Java and JVM.
Ramon Wieleman @r_wieleman
471 Followers 160 Following Founder of @CodeNomadsNL | Conference Speaker | Interested in Productivity, Software Technology, Media, Sports | Certified Beer Taster
Foojay.io @foojayio
10K Followers 1K Following https://t.co/79DlsBV1yM: a place for friends of OpenJDK (https://t.co/bm1vJXRJlN)! Twitter handle run by @geertjanw, @ypoirier, @bazlur_rahman, @tobiasbriones_!
Ana Maria Mihalceanu ... @ammbra1508
4K Followers 1K Following Java Champion Alumni | Architect| Sr. Developer Advocate @Oracle 🇳🇱 | Speaker | Co-founder @BucharestSCC. Opinions are my own. 🐘@[email protected]
Marit van Dijk ☕️... @MaritvanDijk77
5K Followers 3K Following Software Developer | Java Champion | Java Developer Advocate @ JetBrains | International Keynote Speaker | Pronouns: She/her
Willem vd Griendt @Willemvdg
365 Followers 394 Following Founder, Co-Owner & Managing Director @ CodeSquad | Co-Leader Utrecht Java User Group
GrepS - The Code Skil... @GrepSkills
57 Followers 54 Following The authentic in-depth analysis of software engineering skills
Bouke Nijhuis @BoukeNijhuis
490 Followers 228 Following I try to tell computers what to do. Sometimes they listen, sometimes they do not.
J-Fall 🇳🇱 @jfallconf
837 Followers 19 Following The biggest Java conference in the Netherlands | 07 Nov 2024 | Pathe Ede | @nljug | https://t.co/KJZuNUqu8D | tweets by @BrianVerm
Michel van Dongen @VanDongenM
294 Followers 498 Following Board Member adesso NL | Director @Blue4IT_NL | Co-leader @utrechtjug | @michelvandongen.bsky.social
Java Forum Nord @JavaForumNord
852 Followers 413 Following Die Konferenz der Java-Community in Norddeutschland • 9. Ausgabe am Dienstag, 10. September 2024 im Hannover Congress Centrum • #javaforumnord
Berwout @berwout_dvr
44 Followers 59 Following
Laurens Leeuwis @LaurensLeeuwis
253 Followers 212 Following Snowboarding | Java | Scrum | Fun | Running
Jan-Kees van Andel @jankeesvanandel
336 Followers 254 Following Software craftsman @ JPoint, Frontend guy, Apache, web development, Devoxx Steering member, cycling, running, formula 1...
Femke Koppen @femkekoppen
86 Followers 143 Following
Ahli 💙💛 @AhliSC2
905 Followers 484 Following Software Dev, game modder - GameHeart's Obs UI, Diablo Mortal Shroud in StarCraft II and AhliObs in Heroes of the Storm, Random Bunker Def in SCBW
Ardit Ymeri @diti_y
75 Followers 546 Following
Piet van Dongen @pietvandongen
623 Followers 3K Following RIP Twitter, bye. (Software) enthusiast, value hypotheses obsessed. He/him.
Benedikt Neumayr @NeumayrBenedikt
2 Followers 4 Following
Enis Spahi @enisspahi
169 Followers 357 Following
Martin Kanters @MartinKanters
132 Followers 181 Following List.of("Senior Software Engineer", "Apache Maven Committer", "Java enthusiast", "Jazz pianist")
Devnexus @devnexus
6K Followers 692 Following Devnexus is the largest and longest-running Java ecosystem conference in the U.S. and a leading global tech event. Stay informed https://t.co/EiU3RBWT1Y
Kelly Jille 🇺🇦 @KellyJille86
633 Followers 881 Following 👩🏻💻 Java software engineer | 🎤 International keynote & conference speaker | 📚 “(Sharing) knowledge is one of the best gifts one can ever get!”
Tim van Eijndhoven @TimvEijndhoven
267 Followers 160 Following IT professional, likes sports and gadgets.
Mark Striekwold @DevAttic
244 Followers 834 Following A developer with a passion for Java, Kotlin, Raspberry Pi, Arduino and databases.
JPoint B.V. @JPoint
371 Followers 170 Following JPoint - Software craftsmen and architects. Java, to the point.
Anton de Ruiter @aruit
120 Followers 215 Following Manager Java / Vakcoördinator Java bij de Belastingdienst
INACTIVE - Julien Len... @jlengrand
2K Followers 812 Following Lead Developer Advocate 🇫🇷🇳🇱🇪🇺🇺🇦 ✨@Kotlin @GoogleDevExpert ✨ and 🍊@Gitpod hero🍊, Editor @JavaMagazineNL. Growing my own food. #devrel #climate
Artem @artemy_m
377 Followers 222 Following err and err and err again, but less and less and less | P.Eng @CodeNomadsNL | FP/Clojure enthusiast | DIY electronics hobbyist
💻Gerard Klijs🦀 @GKlijs
775 Followers 2K Following Developer at #Alliander working with #Java #Kafka #Spring #GraphQL interested in #Clojure #Rustlang #EventSourcing #BassGuitar. @[email protected]
Ralf D. Müller 📯 ... @RalfDMueller
1K Followers 1K Following Jack of all Trades, Master of none (ت), Conference Speaker, Solution Architect, #arc42, #Systelaner, Creator of @docToolchain. Views and thiughts are my own.
Miro Wengner @miragemiko
1K Followers 488 Following @Java_Champions, @oracleace, Software Engineer, OpenJDK, @Robo4J, Published Author, father, husband, data geek and dreamer
Sebastian Konieczek @the_real_sko
31 Followers 75 Following That's me: # dedicated software developer # clean coder - at least I try ;) # naming enthusiast - man do names matter! # wakeboarder # fitness guy
Code Nomads @CodeNomadsNL
182 Followers 79 Following Code Nomads is a premium consulting company specialized in providing flexible and high-quality ICT services in the fields of Java software development
Lagergren @lagergren
4K Followers 2K Following Engineer. Author. Father. Java language team alumnus. Java Champion. Likes compilers, static typing, handguns & literature.
Bert Breeman @BertBreeman
368 Followers 191 Following Vader van 3 fantastische dochters, mede-eigenaar van OpenValue Rotterdam, Voorzitter NLJUG
Yoink @yoinknl
42 Followers 14 Following
Thomas Ücel @UcelThomas
13 Followers 19 Following I love to network and share knowledge. It's a way you can give something without loosing something. Director and shareholder of OpenValue Gmbh in Vienna
Pieter Stek @pieter_stek
9 Followers 9 Following
Roy Braam @rbraam
472 Followers 219 Following Founder OpenValue Amsterdam | Conference speaker | Board member Amsterdam JUG | Love to share knowledge | Father of 2 | Does something with Computers
BarCoding Podcast @coding_bar
103 Followers 36 Following 🎙️Podcast about software engineering | 🧑🏼💻👩🏻💻 Passionate #Java developers | 🍺 Friday night drinks talks | Sharing knowledge
Mauro Palsgraaf @MauroPalsgraaf
205 Followers 660 Following Enthousiastic programmer. Software engineer at @OpenValue. FP enthousiast and co-organizer of FP Ams. Java / Scala dev by day, Scala / Haskell hacker by nightYou might like
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