Bert Jan Schrijver
@bjschrijver.dev
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.
Just presented "Making significant Software Architecture decisions" at @devoxx.com Belgium.
Thanks everyone for joining!
Slide deck:
www.slideshare.net/slideshow/de...
Thanks everyone for joining!
Slide deck:
www.slideshare.net/slideshow/de...
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
www.slideshare.net
October 8, 2025 at 1:43 PM
Just presented "Making significant Software Architecture decisions" at @devoxx.com Belgium.
Thanks everyone for joining!
Slide deck:
www.slideshare.net/slideshow/de...
Thanks everyone for joining!
Slide deck:
www.slideshare.net/slideshow/de...
Reposted by Bert Jan Schrijver
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...
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...
September 24, 2025 at 2:18 PM
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...
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...
Reposted by Bert Jan Schrijver
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!
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!
October 1, 2025 at 5:30 PM
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!
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!
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!
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...
sessionize.com
August 22, 2025 at 12:19 PM
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!
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!
August 22, 2025 at 9:55 AM
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!
Wheels down BCN for @devbcn.bsky.social!
July 5, 2025 at 12:49 PM
Wheels down BCN for @devbcn.bsky.social!
Reposted by Bert Jan Schrijver
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
www.dev2next.com/speaker/9391...
🎟️ dev2next.com
🙌 JOIN-BERT-JANS-50OFF = discount
June 30, 2025 at 5:01 PM
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
www.dev2next.com/speaker/9391...
🎟️ dev2next.com
🙌 JOIN-BERT-JANS-50OFF = discount
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...
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 - 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
github.com
June 22, 2025 at 11:26 AM
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...
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...
Reposted by Bert Jan Schrijver
🏗️ 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...
Free food, drinks & networking!
RSVP: www.meetup.com/isaqb-nl/eve...
May 26, 2025 at 11:10 AM
🏗️ 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...
Free food, drinks & networking!
RSVP: www.meetup.com/isaqb-nl/eve...
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...
If you're into software architecture, don't miss this event!
www.meetup.com/isaqb-nl/eve...
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
www.meetup.com
May 23, 2025 at 6:42 AM
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...
If you're into software architecture, don't miss this event!
www.meetup.com/isaqb-nl/eve...
Reposted by Bert Jan Schrijver
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
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
May 13, 2025 at 3:50 PM
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
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
Reposted by Bert Jan Schrijver
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
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
May 1, 2025 at 10:45 AM
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
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
Slide deck for my talk "Making significant software architecture decisions" at the NLKUG meetup tonight:
Making significant software architecture decisions
Making significant software architecture decisions - Download as a PDF or view online for free
www.slideshare.net
April 9, 2025 at 5:11 PM
Slide deck for my talk "Making significant software architecture decisions" at the NLKUG meetup tonight:
Reposted by Bert Jan Schrijver
🧠 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
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™ - ...
youtu.be
April 1, 2025 at 5:02 AM
🧠 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
Reposted by Bert Jan Schrijver
Meetup time in our Utrecht office!
First up: Artem Makarov talking about reverse engineering
First up: Artem Makarov talking about reverse engineering
March 19, 2025 at 5:36 PM
Meetup time in our Utrecht office!
First up: Artem Makarov talking about reverse engineering
First up: Artem Makarov talking about reverse engineering
Reposted by Bert Jan Schrijver
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
February 14, 2025 at 7:16 AM
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
@rustam.no look what I found in the @openvalue.eu Munich office 😉
February 6, 2025 at 3:24 PM
@rustam.no look what I found in the @openvalue.eu Munich office 😉
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!
Less than 6.5 hours with a direct train from Utrecht - not bad!
February 6, 2025 at 10:22 AM
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!
Less than 6.5 hours with a direct train from Utrecht - not bad!
Reposted by Bert Jan Schrijver
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
#Java #Community
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
meetu.ps
February 4, 2025 at 6:19 PM
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
#Java #Community
Reposted by Bert Jan Schrijver
Tuesday January 14th we'll host our first meetup of the year with Elias faking testdata, Guus sharing the opportunities of code competitions and Johan guiding us through immutable Java records.
Sign up at www.meetup.com/jug-noord/ev...
Sign up at www.meetup.com/jug-noord/ev...
January 8, 2025 at 5:47 AM
Just submitted a couple of proposals for DevBcn - so how about you? 😉
https://buff.ly/3iUel35
#DevBcn
https://buff.ly/3iUel35
#DevBcn
DevBcn 2025 - Barcelona Developers Conference in Spain — 8-10 — July
Home • DevBcn 2025. The Barcelona Developer Conference in Spain
buff.ly
January 6, 2025 at 1:27 PM
Just submitted a couple of proposals for DevBcn - so how about you? 😉
https://buff.ly/3iUel35
#DevBcn
https://buff.ly/3iUel35
#DevBcn
Reposted by Bert Jan Schrijver
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
Watch the video to check out our OpenValue Wrapped 2024! #DeveloperLife #YearInReview
December 12, 2024 at 10:34 AM
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
Watch the video to check out our OpenValue Wrapped 2024! #DeveloperLife #YearInReview
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...
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
December 11, 2024 at 12:50 PM
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...
I've completed "Plutonian Pebbles" - Day 11 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/11
My solution: github.com/bertjan/adve...
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 😅
My solution: github.com/bertjan/adve...
Timewise, this may be the last day I participated this year 😅
December 10, 2024 at 4:42 PM
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 😅
My solution: github.com/bertjan/adve...
Timewise, this may be the last day I participated this year 😅
