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Bert Jan Schrijver

@bjschrijver.dev
1.3K followers 182 following 150 posts

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.

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Bert Jan Schrijver @bjschrijver.dev · 05/03/2026
Today we're hosting another @isaqb.bsky.social Software Architecture Community NL meetup at the @openvalue.eu Utrecht office, with two talks about the intersection between software architecture and AI. Interested? Join the community at www.meetup.com/isaqb-nl/ !
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Lars Rosenquist @calvobianco.com · 17/02/2026
Here's a great blog article from someone actually in the field, @bjschrijver.dev , also provides a very nuanced view of the junior-to-senior pipeline. openvalue.blog/posts/2026/0...
openvalue.blog
Vision on AI Impact in Software Development — Part 1: Bert Jan Schrijver | OpenValue | Blog
Vision on AI Impact in Software Development — Part 1: Bert Jan Schrijver | OpenValue | Blog
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Bert Jan Schrijver @bjschrijver.dev · 08/10/2025
Just presented "Making significant Software Architecture decisions" at @devoxx.com Belgium. Thanks everyone for joining! Slide deck: www.slideshare.net/slideshow/de...
slideshare.net
Devoxx Belgium 2025 - Making significant Software Architecture decisions
Making significant Software Architecture decisions - presented at Devoxx Belgium 2025. - Download as a PDF or view online for free
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GraalVM @graalvm.org · 24/09/2025
Go serverless with Quarkus, GraalVM Native Image and AWS Lambda with @bjschrijver.dev! The talk will cover the migration process, development, deployment, and cost considerations, with a demo to help attendees get started themselves: m.devoxx.com/events/dvbe2...
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dev2next.bsky.social @dev2next.bsky.social · 01/10/2025
Every developer starts by learning. The real growth happens when you start sharing. 🚀 At #dev2next, @bjschrijver.dev's keynote showed how this simple cycle transformed his career — and how it can transform yours too. 📸 Photos from the session below!
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Bert Jan Schrijver @bjschrijver.dev · 22/08/2025
The J-Fall 2025 call for papers is open for one more week and will close on September 1st, end of day. Please share your proposal(s) via sessionize.com/jfall25!
sessionize.com
J-Fall 2025: Call for Speakers
THE BIGGEST JAVA CONFERENCE OF THE NETHERLANDS November 6, 2025 | Pathé Ede, The Netherlands J-Fall is organized by and for the NLJUG and is free fo...
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Bert Jan Schrijver @bjschrijver.dev · 22/08/2025
I'll be back on stage at @devoxx.com in Antwerp in October to present three sessions: a talk about software architecture, a serverless deep dive and a speaker coaching session. Hope to see you here!
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Bert Jan Schrijver @bjschrijver.dev · 05/07/2025
Wheels down BCN for @devbcn.bsky.social!
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dev2next.bsky.social @dev2next.bsky.social · 30/06/2025
Should you build for reuse or solve just the problem at hand? Learn how to balance generic vs specific design with real-world insights & practical strategies with @bjschrijver.dev at dev2next!💥 www.dev2next.com/speaker/9391... 🎟️ dev2next.com 🙌 JOIN-BERT-JANS-50OFF = discount
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Bert Jan Schrijver @bjschrijver.dev · 22/06/2025
Played around a bit with MCP integration with @quarkus.io, @langchain4j.dev and Ollama during the yearly hackathon with the @openvalue.eu Utrecht team. Built a small example setup with 2 @quarkus.io apps - an MCP client that connects to an MCP server over HTTP: github.com/bertjan/quar...
github.com
GitHub - bertjan/quarkus-langchain-ollama-mcp-example: Example MCP client and server with Quarkus, Langchain4j and Ollama.
Example MCP client and server with Quarkus, Langchain4j and Ollama. - bertjan/quarkus-langchain-ollama-mcp-example
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OpenValue @openvalue.eu · 26/05/2025
🏗️ Software Architecture Meetup "Decision making in practice" - June 12, Utrecht. OpenValue sponsors the iSAQB NL's architecture meetup! 2 talks on decision-making & ADRs by our experts @bjschrijver.dev & @pietvandongen.com Free food, drinks & networking! RSVP: www.meetup.com/isaqb-nl/eve...
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Bert Jan Schrijver @bjschrijver.dev · 23/05/2025
I'm speaking at the @isaqb.bsky.social Software Architecture Community NL meetup in Utrecht on June 12th where I'll talk about making significant software architecture decisions. If you're into software architecture, don't miss this event! www.meetup.com/isaqb-nl/eve...
meetup.com
Software architecture decision making in practice, Thu, Jun 12, 2025, 5:30 PM | Meetup
Hello architecture enthusiasts! We're excited to announce our next meetup focused on **software architecture decision making in practice**! Join us for an engaging evening
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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 13/05/2025
Today I had great time at #JCON2025 presenting 'How I Solved Production Issues with OpenTelemetry (And How You Can Too)". The @jcon.one conference is really cool to join and talk with fellow developers and share thoughts. Missed the talk? Check the slides, code and more goto.ceesbos.nl/jcon2025
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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 01/05/2025
Today I am preparing for #JCON Within two weeks I will be presenting how #OpenTelemetry can help you with your observability challenges. I am looking forward to the conference! @jcon.one
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Bert Jan Schrijver @bjschrijver.dev · 09/04/2025
Slide deck for my talk "Making significant software architecture decisions" at the NLKUG meetup tonight:
slideshare.net
Making significant software architecture decisions
Making significant software architecture decisions - Download as a PDF or view online for free
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OpenValue @openvalue.eu · 01/04/2025
🧠 Introducing OpenValue's NeuroCoder™! Our revolutionary headband transfers Java expertise directly to your brain in 15 minutes! Watch our video to see how you'll master 37+ frameworks instantly. Side effect: speaking in lambda expressions 😉 youtu.be/P27UaXkK3s4
youtu.be
OpenValue NeuroCoder 2025 - The World's First Brain-Training Headband for Instant Java Mastery
OpenValue, recognized thought leaders in the Java ecosystem, proudly announces a groundbreaking advancement in developer education technology: NeuroCoder™ - ...
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OpenValue @openvalue.eu · 19/03/2025
Meetup time in our Utrecht office! First up: Artem Makarov talking about reverse engineering
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OpenValue @openvalue.eu · 14/02/2025
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
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Bert Jan Schrijver @bjschrijver.dev · 06/02/2025
@rustam.no look what I found in the @openvalue.eu Munich office 😉
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Bert Jan Schrijver @bjschrijver.dev · 06/02/2025
On my way to Munich for a day with the @iSAQB.bsky.social foundation workgroup and a visit to the @OpenValue.eu Munich team! Less than 6.5 hours with a direct train from Utrecht - not bad!
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Gerrit Grunwald @hansolo.eu · 04/02/2025
Looking forward to speak at #OpenValue in #Düsseldorf again…if you are interested, feel free to join and sign up here: Trash Talk - Exploring JVM memory management & Back to basics: Strings in Java meetu.ps/e/NR42R/LYZK... #Java #Community
meetu.ps
Trash Talk - Exploring JVM memory management & Back to basics: Strings in Java, Thu, Feb 20, 2025, 6:00 PM | Meetup
Dear Java Community, after the Meetup is before the Meetup! So I am happy to announce our next **OpenValue Meetup** on 20th of February! Again we were able to organize t
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Paulien van Alst @paulienvanalst.bsky.social · 08/01/2025
Next week we are hosting our first event of the year! Are you joining? #JUGNoord #Leeuwarden #Java
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Bert Jan Schrijver @bjschrijver.dev · 06/01/2025
Just submitted a couple of proposals for DevBcn - so how about you? 😉 buff.ly/3iUel35 #DevBcn
buff.ly
DevBcn 2025 - Barcelona Developers Conference in Spain — 8-10 — July
Home • DevBcn 2025. The Barcelona Developer Conference in Spain
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OpenValue @openvalue.eu · 12/12/2024
What happens when you mix Spotify Wrapped with a developer's year at OpenValue? 🎵 Watch the video to check out our OpenValue Wrapped 2024! #DeveloperLife #YearInReview
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Bert Jan Schrijver @bjschrijver.dev · 11/12/2024
OK, one more.. today wasn’t bad! I've completed "Plutonian Pebbles" - Day 11 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/11 My solution: github.com/bertjan/adve...
github.com
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Bert Jan Schrijver @bjschrijver.dev · 10/12/2024
I've completed "Hoof It" - Day 10 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/10 My solution: github.com/bertjan/adve... Timewise, this may be the last day I participated this year 😅
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Bert Jan Schrijver @bjschrijver.dev · 06/12/2024
1k followers on this new "bird" already.. @bsky.app is taking off!
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Bert Jan Schrijver @bjschrijver.dev · 05/12/2024
I was interviewed by the @isaqb.bsky.social about software architecture, communities and more. Watch the video here:
youtube.com
iSAQB Community Netherlands
YouTube video by iSAQB
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Jim Grisanzio @grisanzio.bsky.social · 05/12/2024
Bert Jan Schrijver on Duke's Corner 05/02/2024 @bjschrijver.dev dukescorner.libsyn.com/bert-jan-sch...
dukescorner.libsyn.com
Duke's Corner: Bert Jan Schrijver: Java is a Marvel of Engineering
Jim Grisanzio from Java Developer Relations talks with Bert Jan Schrijver from The Netherlands. Bert is a Java Champion, a leader of the Dutch Java User Group, and the CTO and co-founder of OpenValue ...
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Bert Jan Schrijver @bjschrijver.dev · 03/12/2024
Today I learned about buff.ly/46f8iKF: Interactive environments for tech you study, teach or present Got an Ubuntu VM running with a browser interface in just a couple of clicks. Looks useful!
buff.ly
Killercoda Interactive Environments
Learn DevOps Linux Kubernetes CKS CKA CKAD Git Cassandra etc | Katacoda compatible
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Bert Jan Schrijver @bjschrijver.dev · 03/12/2024
Second talk at the @OpenValue.eu Utrecht meetup: @ceesbos.nl talking about solving issues with OpenTelemetry 👌🏻
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Bert Jan Schrijver @bjschrijver.dev · 03/12/2024
Meetup time at the @OpenValue.eu Utrecht office! First up: Jos Roseboom talking about Spring Modulith
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Bert Jan Schrijver @bjschrijver.dev · 03/12/2024
I've completed "Mull It Over" - Day 3 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/3 github.com/bertjan/adve...
github.com
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Bert Jan Schrijver @bjschrijver.dev · 02/12/2024
Just submitted a couple of proposals for @voxxedzurich.bsky.social - how about you? 😉 The call for papers closes today at midnight, so don't wait!
vdz25.cfp.dev
Call For Papers
The Call for Papers web app which allows authenticated users to submit talks and the program committee to review and rate them.
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Eddy Vinck @eddyvinck.bsky.social · 29/11/2024
Happy Black Friday! You can get Blog Recorder for 20% off this weekend! blogrecorder.com
blogrecorder.com
Audio Turned Into Blog Articles
🚀 Record your voice in the car or at home, and turn that it into a proper blog post with AI.
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Brian Vermeer @brianvermeer.nl · 27/11/2024
Check out the #Jfall 2024 after movie. I appreciate everyone involved in creating this amazing event. Thanks you 🙏 buff.ly/498669C @nljug.bsky.social
buff.ly
Aftermovie J-Fall 2024
AFTERMOVIE J-FALL 2024 IS HERE!! We’re still enjoying the energy, innovation, and connections that made this year’s J-Fall 2024 unforgettable.From insightful...
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NLJUG - Dutch Java User Group @nljug.bsky.social · 21/11/2024
We're still enjoying the memories of an amazing event! You can check out the J-Fall 2024 photos on our website. jfall.nl/media/ #jfall2024 #nljug #java #photo #pathe
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OpenValue @openvalue.eu · 18/11/2024
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: www.meetup.com/openvalue/ev...
meetup.com
Package encapsulation with Spring Modulith && Solving issues with OpenTelemetry, Tue, Dec 3, 2024, 5:30 PM | Meetup
We're excited to announce our next meetup Dec 3rd, 2024! As usual, we'll take care of food, drinks and awesome sessions - you just need to bring you ;-) This meetup will f
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Bert Jan Schrijver @bjschrijver.dev · 17/11/2024
Moving from Twitter to Bluesky? Here are a couple of useful tips including migrating posts and people you followed 👌🏻
popsci.com
How to leave Twitter for Bluesky
If you're ready to make the switch, here's how. Bye bye, Elon.
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Sean | Drowned in Sound @drownedinsound.bsky.social · 17/11/2024
This is clever. Great work @theo.io 👏 bsky-follow-finder.theo.io
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Bluesky @bsky.app · 15/11/2024
💡 Tip: You can set your website as your username on Bluesky! This is one form of self-verification, and we especially encourage official organizations and brands to do this! Examples include @npr.org @react.dev @duolingobrasil.com.br. Here's our guide for how to do this:
bsky.social
How to set your domain as your handle - Bluesky
Using a domain as your handle helps with account identity, verification, and portability. Here's how to set your domain as your handle.
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Bert Jan Schrijver @bjschrijver.dev · 16/11/2024
Is it just me or is BlueSky gaining traction over Twitter? 😉
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Tom Cools @tomcools.be · 10/11/2024
I was terribly nervous to be one of the opening #keynote speakers at J-Fall last week... but it turned out quite well. 😊 Here is a snippet of one of my favorite moments in the talk.💡 It looks great on this video made by @bjschrijver.bsky.social.
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Bert Jan Schrijver @bjschrijver.dev · 08/11/2024
It’s a wrap! Thanks to all speakers attendees and the whole team for amazing @jfallconf! #jfall
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Bert Jan Schrijver @bjschrijver.dev · 21/10/2024
I don't really keep track of this, but I just saw that my playlist of recorded conference talks contains over 50 recordings with over 200.000 views in total! That's.. more than I expected 😉 Thanks for watching!
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Bert Jan Schrijver @bjschrijver.dev · 11/10/2024
These pictures capture the essence of why I speak at conferences. And it's even better when friends join the fun 😆 Thanks @TCoolsIT, @BrianVerm, @JoostenRosanne and others for helping out with my #Devoxx session "Getting started with speaking"! 📷by the amazing @dDoutsiopoulos
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Bert Jan Schrijver @bjschrijver.dev · 10/10/2024
Had a great time presenting "Generic or specific? Making sensible software design decisions" for a full room at @Devoxx Belgium today. Missed it? Slides are here:
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Bert Jan Schrijver @bjschrijver.dev · 01/10/2024
If you’re doing trunk based development and work remote (or hybrid), how do you do code reviews?
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Bert Jan Schrijver @bjschrijver.dev · 25/09/2024
Looks like @nljug @jfallconf sold out in 20 minutes ... #jfall
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Bert Jan Schrijver @bjschrijver.dev · 22/09/2024
Sunday mood 👌🏻
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