Jaap Coomans
@jaapcoomans.nl
Father | Husband | Developer | Java | Kotlin | @brabantjug.nl leader | Speaker | Craft beer sampler | Board game player | Willem II 🔴⚪🔵| He/him
Reposted by Jaap Coomans
JUnit is undoubtedly one of the most important projects in the #Java ecosystem. And it's 100% free and open!
Let me be frank: If we can't get THIS project to the point where a single maintainer can focus on it, then what does that say about our commitment to Free & Open Source Software?
1/3 ⏩
Let me be frank: If we can't get THIS project to the point where a single maintainer can focus on it, then what does that say about our commitment to Free & Open Source Software?
1/3 ⏩
Support JUnit
JUnit is maintained by a team of passionate volunteers. This is your chance to give back and support the project!
steady.page
November 26, 2025 at 11:29 AM
JUnit is undoubtedly one of the most important projects in the #Java ecosystem. And it's 100% free and open!
Let me be frank: If we can't get THIS project to the point where a single maintainer can focus on it, then what does that say about our commitment to Free & Open Source Software?
1/3 ⏩
Let me be frank: If we can't get THIS project to the point where a single maintainer can focus on it, then what does that say about our commitment to Free & Open Source Software?
1/3 ⏩
Reposted by Jaap Coomans
Today we experienced the power of the #Java #Community
Within 2 hours after one of our speakers had to cancel we found a great new speaker for this meetup. And even more were willing to step up.
A big shout-out to the community!
Within 2 hours after one of our speakers had to cancel we found a great new speaker for this meetup. And even more were willing to step up.
A big shout-out to the community!
a close up of a minion with the words face it you rock below it
ALT: a close up of a minion with the words face it you rock below it
media.tenor.com
November 21, 2025 at 6:38 PM
Today we experienced the power of the #Java #Community
Within 2 hours after one of our speakers had to cancel we found a great new speaker for this meetup. And even more were willing to step up.
A big shout-out to the community!
Within 2 hours after one of our speakers had to cancel we found a great new speaker for this meetup. And even more were willing to step up.
A big shout-out to the community!
Reposted by Jaap Coomans
Just 4 days until our next Meetup!
This time Sioux will be hosting us in their Eindhoven office.
🗣️ @marianne-h.bsky.social - Unveiling the simple math that powers AI
🗣️ @josroseboom.bsky.social - When ORM becomes OMG: Performance Pitfalls in JPA and Friends
www.meetup.com/brabant-jug/...
This time Sioux will be hosting us in their Eindhoven office.
🗣️ @marianne-h.bsky.social - Unveiling the simple math that powers AI
🗣️ @josroseboom.bsky.social - When ORM becomes OMG: Performance Pitfalls in JPA and Friends
www.meetup.com/brabant-jug/...
BrabantJUG @ Sioux Technologies, Mon, Nov 24, 2025, 5:30 PM | Meetup
On 24 November, BrabantJUG will be hosting our next meetup, this time at a new host: Sioux Technologies. Again we will have some great content for you. See you there!
**Ti
www.meetup.com
November 20, 2025 at 2:53 PM
Just 4 days until our next Meetup!
This time Sioux will be hosting us in their Eindhoven office.
🗣️ @marianne-h.bsky.social - Unveiling the simple math that powers AI
🗣️ @josroseboom.bsky.social - When ORM becomes OMG: Performance Pitfalls in JPA and Friends
www.meetup.com/brabant-jug/...
This time Sioux will be hosting us in their Eindhoven office.
🗣️ @marianne-h.bsky.social - Unveiling the simple math that powers AI
🗣️ @josroseboom.bsky.social - When ORM becomes OMG: Performance Pitfalls in JPA and Friends
www.meetup.com/brabant-jug/...
Reposted by Jaap Coomans
Hi everyone! An ongoing reorganization at my current employer has prompted me to seek for a new role and would appreciate your support.
I'm open to remote (anywhere) and hybrid roles in Switzerland. I have 25+ years experience as a software developer, 8 as devrel www.linkedin.com/posts/aalmir...
I'm open to remote (anywhere) and hybrid roles in Switzerland. I have 25+ years experience as a software developer, 8 as devrel www.linkedin.com/posts/aalmir...
#opensource #opentowork | Andres Almiray
Hi everyone! An ongoing reorganization at my current employer has prompted me to seek for a new role and would appreciate your support.
I'm open to remote (anywhere) and hybrid roles in Switzerland (...
www.linkedin.com
November 11, 2025 at 10:46 AM
Hi everyone! An ongoing reorganization at my current employer has prompted me to seek for a new role and would appreciate your support.
I'm open to remote (anywhere) and hybrid roles in Switzerland. I have 25+ years experience as a software developer, 8 as devrel www.linkedin.com/posts/aalmir...
I'm open to remote (anywhere) and hybrid roles in Switzerland. I have 25+ years experience as a software developer, 8 as devrel www.linkedin.com/posts/aalmir...
Reposted by Jaap Coomans
We're present at the community hub at @nljug.bsky.social #JFall today together with a lot of other friendly local JUGs.
Come have a chat
Come have a chat
November 6, 2025 at 12:41 PM
We're present at the community hub at @nljug.bsky.social #JFall today together with a lot of other friendly local JUGs.
Come have a chat
Come have a chat
October 9, 2025 at 6:07 AM
Reposted by Jaap Coomans
The Call for Papers for Voxxed Days Amsterdam 2026 is officially OPEN! 😎
Do you have the the knowledge, experience or have an idea to share to the #Java community?
This is your chance!
📅 Date: April 1–2, 2026
📌 Submit your proposal:
vdams26.cfp.dev
Do you have the the knowledge, experience or have an idea to share to the #Java community?
This is your chance!
📅 Date: April 1–2, 2026
📌 Submit your proposal:
vdams26.cfp.dev
October 8, 2025 at 8:35 AM
The Call for Papers for Voxxed Days Amsterdam 2026 is officially OPEN! 😎
Do you have the the knowledge, experience or have an idea to share to the #Java community?
This is your chance!
📅 Date: April 1–2, 2026
📌 Submit your proposal:
vdams26.cfp.dev
Do you have the the knowledge, experience or have an idea to share to the #Java community?
This is your chance!
📅 Date: April 1–2, 2026
📌 Submit your proposal:
vdams26.cfp.dev
Reposted by Jaap Coomans
𝐓𝐡𝐞 𝐯𝐞𝐫𝐲 𝐟𝐢𝐫𝐬𝐭 𝐛𝐚𝐭𝐜𝐡 𝐨𝐟 𝐉-𝐅𝐚𝐥𝐥 2025 𝐭𝐢𝐜𝐤𝐞𝐭𝐬 𝐠𝐨𝐞𝐬 𝐥𝐢𝐯𝐞 𝐭𝐨𝐦𝐨𝐫𝐫𝐨𝐰, 𝐒𝐞𝐩𝐭𝐞𝐦𝐛𝐞𝐫 25𝐭𝐡 𝐚𝐭 12:00
Better set your alarms, because these early tickets are always gone in a flash.
Claim your ticket www.eventbrite.nl/e/j-fall-202...
#NLJUG #Java #Jfall #Tickets
Better set your alarms, because these early tickets are always gone in a flash.
Claim your ticket www.eventbrite.nl/e/j-fall-202...
#NLJUG #Java #Jfall #Tickets
www.eventbrite.nl
September 24, 2025 at 9:10 AM
𝐓𝐡𝐞 𝐯𝐞𝐫𝐲 𝐟𝐢𝐫𝐬𝐭 𝐛𝐚𝐭𝐜𝐡 𝐨𝐟 𝐉-𝐅𝐚𝐥𝐥 2025 𝐭𝐢𝐜𝐤𝐞𝐭𝐬 𝐠𝐨𝐞𝐬 𝐥𝐢𝐯𝐞 𝐭𝐨𝐦𝐨𝐫𝐫𝐨𝐰, 𝐒𝐞𝐩𝐭𝐞𝐦𝐛𝐞𝐫 25𝐭𝐡 𝐚𝐭 12:00
Better set your alarms, because these early tickets are always gone in a flash.
Claim your ticket www.eventbrite.nl/e/j-fall-202...
#NLJUG #Java #Jfall #Tickets
Better set your alarms, because these early tickets are always gone in a flash.
Claim your ticket www.eventbrite.nl/e/j-fall-202...
#NLJUG #Java #Jfall #Tickets
Reposted by Jaap Coomans
After some drinks and good conversation we continue the evening with @davidvlijmincx.com speaking about Async IO with Java and C.
September 16, 2025 at 6:20 PM
After some drinks and good conversation we continue the evening with @davidvlijmincx.com speaking about Async IO with Java and C.
Reposted by Jaap Coomans
First up tonight is @balarawool.bsky.social, telling us about the secrets of Vector Databases.
September 16, 2025 at 5:09 PM
First up tonight is @balarawool.bsky.social, telling us about the secrets of Vector Databases.
Reposted by Jaap Coomans
@remcoder.bsky.social and Joep Weijers kicking of the gezelligste JUG of the Netherlands at TOPdesk!
September 16, 2025 at 4:59 PM
@remcoder.bsky.social and Joep Weijers kicking of the gezelligste JUG of the Netherlands at TOPdesk!
Come for the content, stay for the Brabantse gezelligheid!
Now the summer holiday is over, it's time for a great new BrabantJUG Meetup!
On 16 September TOPdesk will be hosting us in #Tilburg.
We have 2 great speakers:
@balarawool.bsky.social: Making Sense of Vector Databases
@davidvlijmincx.com: Async IO with Java and C
www.meetup.com/brabant-jug/...
On 16 September TOPdesk will be hosting us in #Tilburg.
We have 2 great speakers:
@balarawool.bsky.social: Making Sense of Vector Databases
@davidvlijmincx.com: Async IO with Java and C
www.meetup.com/brabant-jug/...
BrabantJUG @ TOPDesk, Tue, Sep 16, 2025, 5:00 PM | Meetup
## Details
On 16 September, BrabantJUG will be hosting our next meetup at TOPdesk! We have 2 great speakers lined up for you. **David Vlijmincx** will speak about **Async
www.meetup.com
August 29, 2025 at 1:13 PM
Come for the content, stay for the Brabantse gezelligheid!
Reposted by Jaap Coomans
Now the summer holiday is over, it's time for a great new BrabantJUG Meetup!
On 16 September TOPdesk will be hosting us in #Tilburg.
We have 2 great speakers:
@balarawool.bsky.social: Making Sense of Vector Databases
@davidvlijmincx.com: Async IO with Java and C
www.meetup.com/brabant-jug/...
On 16 September TOPdesk will be hosting us in #Tilburg.
We have 2 great speakers:
@balarawool.bsky.social: Making Sense of Vector Databases
@davidvlijmincx.com: Async IO with Java and C
www.meetup.com/brabant-jug/...
BrabantJUG @ TOPDesk, Tue, Sep 16, 2025, 5:00 PM | Meetup
## Details
On 16 September, BrabantJUG will be hosting our next meetup at TOPdesk! We have 2 great speakers lined up for you. **David Vlijmincx** will speak about **Async
www.meetup.com
August 29, 2025 at 1:05 PM
Now the summer holiday is over, it's time for a great new BrabantJUG Meetup!
On 16 September TOPdesk will be hosting us in #Tilburg.
We have 2 great speakers:
@balarawool.bsky.social: Making Sense of Vector Databases
@davidvlijmincx.com: Async IO with Java and C
www.meetup.com/brabant-jug/...
On 16 September TOPdesk will be hosting us in #Tilburg.
We have 2 great speakers:
@balarawool.bsky.social: Making Sense of Vector Databases
@davidvlijmincx.com: Async IO with Java and C
www.meetup.com/brabant-jug/...
Reposted by Jaap Coomans
JavaLand 2025 was a blast! 🚀 Miriam & I talked OpenAPI & RESTful APIs. Shout-out to @jaapcoomans.nl for a great talk on contract-first API testing with Quarkus – awesome demo of real dev enablement! 💥
April 2, 2025 at 9:20 AM
JavaLand 2025 was a blast! 🚀 Miriam & I talked OpenAPI & RESTful APIs. Shout-out to @jaapcoomans.nl for a great talk on contract-first API testing with Quarkus – awesome demo of real dev enablement! 💥
Thanks to those at @javaland.bsky.social who attended my session.
The demo code and the slides are on github: github.com/jaapcoomans/...
The demo code and the slides are on github: github.com/jaapcoomans/...
GitHub - jaapcoomans/contract-first-api-testing: Demo project for Contract-first API Testing
Demo project for Contract-first API Testing. Contribute to jaapcoomans/contract-first-api-testing development by creating an account on GitHub.
github.com
April 2, 2025 at 8:00 AM
Thanks to those at @javaland.bsky.social who attended my session.
The demo code and the slides are on github: github.com/jaapcoomans/...
The demo code and the slides are on github: github.com/jaapcoomans/...
Good morning @javaland.bsky.social
Ready for some early morning testing? I will be speaking about contract-first API testing with Quarkus in room Bergwerk at 09:00. See you there?
Ready for some early morning testing? I will be speaking about contract-first API testing with Quarkus in room Bergwerk at 09:00. See you there?
April 2, 2025 at 5:35 AM
Good morning @javaland.bsky.social
Ready for some early morning testing? I will be speaking about contract-first API testing with Quarkus in room Bergwerk at 09:00. See you there?
Ready for some early morning testing? I will be speaking about contract-first API testing with Quarkus in room Bergwerk at 09:00. See you there?
April 1, 2025 at 6:22 AM
Waiting for the mini.CONF keynote to start.
March 20, 2025 at 5:32 PM
Waiting for the mini.CONF keynote to start.
Getting ready for mini.CONF, our yearly #group9 conference. This year marks the 10th edition 🎉 with some great external speakers!
@jqno.nl, @timtebeek.github.io and @rijosam.com will be speaking tonight.
@jqno.nl, @timtebeek.github.io and @rijosam.com will be speaking tonight.
March 20, 2025 at 2:21 PM
Getting ready for mini.CONF, our yearly #group9 conference. This year marks the 10th edition 🎉 with some great external speakers!
@jqno.nl, @timtebeek.github.io and @rijosam.com will be speaking tonight.
@jqno.nl, @timtebeek.github.io and @rijosam.com will be speaking tonight.
That's a first...
Received an email with a PowerPoint attached with a single slide in A4 paper size that contains a letter.
If only a tool existed for sending digital letters...
Received an email with a PowerPoint attached with a single slide in A4 paper size that contains a letter.
If only a tool existed for sending digital letters...
March 5, 2025 at 2:45 PM
That's a first...
Received an email with a PowerPoint attached with a single slide in A4 paper size that contains a letter.
If only a tool existed for sending digital letters...
Received an email with a PowerPoint attached with a single slide in A4 paper size that contains a letter.
If only a tool existed for sending digital letters...