@BertBreeman profile picture
Bert Breeman @BertBreeman

Vader van 3 fantastische dochters, mede-eigenaar van OpenValue Rotterdam, Voorzitter NLJUG

Joined July 2009
  • Tweets 2,251
  • Following 191
  • Followers 368
202 Photos and videos
#jfall 2025 is weer begonnen! @nljug
44
Bert Breeman retweeted
RotterdamJUG@RotterdamJUG
7 Oct 2025
Fearless testing 😨 Agentic AI 🤖 Two killer talks at the next #RotterdamJUG! Speakers: David Stibbe & Wouter Bauweraerts Host: Lunatech 💙 meetup.com/rotterdamjug/even…

📢 Writing Fearless Tests & Agentic AI in Kotlin, Tue, Oct 28, 2025, 5:30 PM | Meetup

**RotterdamJUG** is back with **two** amazing talks: **Wouter Bauweraerts** 🇧🇪 will share how to write tests that truly survive refactoring, while **David Stibbe** 🇳🇱

meetup.com
2
2
507
Bert Breeman retweeted
Roy van Rijn@royvanrijn
6 Oct 2025
Drinks with @OpenValue at #Devoxx (as usual)... See you there?
2
6
10
1,034
Bert Breeman retweeted
James Melville 🚜
@JamesMelville
1 Aug 2025
This is absolutely brilliant. ♥️ 🎶🎻

3:24
783
8,636
38,770
1,761,739
Een mooie opwarmer voor J-Spring met Andres Almiray en Rijo Sam als sprekers. Jij komt toch ook!
RotterdamJUG@RotterdamJUG
18 May 2025
Next month we have the amazing @aalmiray and Rijo Sam to share their experiences and knowledge. This time from Rijswijk, at an office of @Konecranes. Reserve your spot now: meetu.ps/e/P5bjD/jSdV4/i
38
Get Gunnar Morling to do 1 Billion Row Challenge in 2025 - Sign the Petition! chng.it/VgpKq6GWnL via @Change

Sign the Petition

Get Gunnar Morling to do 1 Billion Row Challenge in 2025

change.org
28
Bert Breeman retweeted
RotterdamJUG@RotterdamJUG
26 Nov 2024
Next up we have Niels from today’s host WeAreFrank!. He’s sharing a war story on using @hazelcast to decouple and horizontally scale their framework.
1
3
126
Bert Breeman retweeted
RotterdamJUG@RotterdamJUG
26 Nov 2024
After a short presentation and a raffle by @VoxxedAmsterdam with a golden ticket 🎫 (by @KoTurk77) we have the first presentation of this evening: Martijn @Dashorst is trying to get us to join the cult of HTMX… Let’s see if he can convert us.
2
4
18
3,365
What an amazing day we had today at J-Fall! Thanks everybody for attending, speaking or supporting the best Java conference in Europe! 💪🏼 #jfall ⁦@nljug⁩
2
2
38
2,473
His first @jfallconf keynote. Well done, @TCoolsIT! You’re a great #Java ambassador!
2
36
773
Drums! 🥁 Loved there opening at @jfallconf 2024!
0:30
1
2
29
1,562
Bert Breeman retweeted
Gunnar Morling 🌍
@gunnarmorling
10 Oct 2024
Hello lovely @Devoxx people! Curious how to process 13 GB of data in less than a second with Ye Goode Olde #Java? Then join @royvanrijn and me for our talk today at 15:00 in room 9 about the One Billion Row Challenge 🤓! devoxx.be/talk/1brc-nerd-sni…
2
3
27
3,952
Bert Breeman retweeted
RotterdamJUG@RotterdamJUG
12 Sep 2024
Next we have @BoukeNijhuis taking about combining Gen AI and TDD: Can LLMs implement your classes if you provide the testcases? 🤷🏻‍♂️ And during the talk @OpenAI releases o1… 🍓 👀
1
1
5
110
Bert Breeman retweeted
RotterdamJUG@RotterdamJUG
12 Sep 2024
We kick-off today’s meetup with @hansolo_, he’s teaching us all about garbage collection 🗑️ #stoptheworld
1
4
12
742
Bert Breeman retweeted
Roy van Rijn@royvanrijn
29 Aug 2024
Join the @RotterdamJUG on Sep 12th for a Pre-Devoxx event at Portbase! Learn more about JVM memory management with @hansolo_ and explore combining TDD and AI with @BoukeNijhuis. And stay for networking and drinks afterwards. Don’t miss out—RSVP now! meetup.com/rotterdamjug/even…

📢Pre-Devoxx: Trash Talk - JVM memory management / TDD & AI - a Perfect pairing?, Thu, Sep 12,...

Another Rotterdam JUG / Pre-Devoxx meetup is now scheduled. For this special meetup our co-host is [Portbase](https://www.portbase.com/), the executive organisation of the

meetup.com
5
4
1,546
Bert Breeman retweeted
Gerrit Grunwald 🇺🇦🇹🇼✌🏻@hansolo_
20 Aug 2024
If you are in #Rotterdam at the 12th of September, feel free to join my session at @RotterdamJUG #java #community Trash Talk - JVM memory management / TDD & AI - a Perfect pairing? meetu.ps/e/NpGPV/LYZKQ/i

📢Pre-Devoxx: Trash Talk - JVM memory management / TDD & AI - a Perfect pairing?, Thu, Sep 12,...

Another Rotterdam JUG / Pre-Devoxx meetup is now scheduled. For this special meetup our co-host is [Portbase](https://www.portbase.com/), the executive organisation of the

meetup.com
2
8
445
Bert Breeman retweeted
Anton Arhipov
@antonarhipov
19 Jul 2024
9
18
233
22,231
Bert Breeman retweeted
Stephan Janssen ☕️🧠🧞‍♂️@Stephan007
19 Jul 2024
Microsoft support is buzzing today... #CrowdStrike 😅
0:08
4
13
62
17,630
De 2e spreker op de meetup van de @RotterdamJUG is niemand minder dan mijn compagnon @royvanrijn. Hij neemt het publiek mee in zijn “Processing a Billion Rows in under 2 Seconds” challenge!
2
6
264
Vanavond is de @RotterdamJUG te gast bij @Developers_NL bij de Kuip. Als eerste spreker neemt @antonarhipov ons mee in alle #IntelliJ tips en trics.
1
5
439
Load more