Martin Stefanko (@xstefank) header
Martin Stefanko (@xstefank) profile picture

Martin Stefanko

@xstefank

Quarkus Core Engineer @IBM, @BrnoJUG leader, @QuarkusIO, @smallrye_io, @MicroProfileIO, author https://nitter.cf/t.co/UIv3yfZzJ3, opinions are my own https://nitter.cf/t.co/A4ekRQpKxL

 Brno, Czechia
github.com/xstefank
Joined March 2016
  • Tweets2.7K
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Photo by Martin Stefanko (@xstefank)Photo by Martin Stefanko (@xstefank)Photo by Martin Stefanko (@xstefank)Photo by Martin Stefanko (@xstefank)Photo by Martin Stefanko (@xstefank)Photo by Martin Stefanko (@xstefank)Photo by Martin Stefanko (@xstefank)Photo by Martin Stefanko (@xstefank)Photo by Martin Stefanko (@xstefank)
What a feeling! Holding your first book in your hands is just awesome! Quarkus in Action is fresh from print! Thank you @ManningBooks and @QuarkusIO!
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Martin Stefanko retweeted
BrnoJUG (@BrnoJUG) profile picture
BrnoJUG@BrnoJUGSep 21
#bJUG talk announcement! Refactoring to Modernize Java Applications using AI Speaker: Dr. Venkat Subramaniam @venkat_s 4. 11. 2026 18:00 Clubco Green Event Space & youtube.com/watch?v=FYUtkb-Z… Registration - meetup.com/brno-java-meetup/…
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Martin Stefanko retweeted
BrnoJUG (@BrnoJUG) profile picture
BrnoJUG@BrnoJUGSep 16
We're live! Java 27 - when preview is inevitable #bJUG youtube.com/watch?v=nt4K7W1E…
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Martin Stefanko retweeted
BrnoJUG (@BrnoJUG) profile picture
BrnoJUG@BrnoJUGSep 16
#bJUG talk announcement! Three Incidents Later: Why We Turned Virtual Threads Off Speaker: Jakub Coufal - Software Engineer @SentinelOne 22. 10. 2026 18:00 Clubco Green Event Space & youtube.com/watch?v=4siuc7lF… Registration - meetup.com/brno-java-meetup/…
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Martin Stefanko retweeted
BrnoJUG (@BrnoJUG) profile picture
BrnoJUG@BrnoJUGAug 26
#bJUG talk announcement! Java 27 - when preview is inevitable Speaker: Jiří Vaněk, OpenJDK engineer @IBM 16. 9. 2026 18:00 Clubco Green Event Space & youtube.com/watch?v=nt4K7W1E… Registration - meetup.com/brno-java-meetup/…
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This is what I love about my dream job in IT: 1. Started with BlueJ IDE. 2. Moved to IntelliJ and opened first terminal. 3. Added a monitor and had IDE + 4 terminals on side. 4. Now I have 4 monitors, and ps aux | grep idea | wc -l 11 ps aux | grep kitty | wc -l 27
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Martin Stefanko retweeted
Quarkus (@QuarkusIO) profile picture
Quarkus
@QuarkusIOJul 8
We released Quarkus 3.37.2, a new maintenance release for our 3.37 stream. Among other things, it fixes several issues related to the reflection-free Jackson serialization. quarkus.io/blog/quarkus-3-37…
Quarkus 3.37.2 - Maintenance release

Quarkus 3.37.2 - Maintenance release

We released Quarkus 3.37.2, a regular maintenance release.

quarkus.io
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Quarkus (@QuarkusIO) profile picture
Quarkus
@QuarkusIOJul 2
See how Quarkus Data unifies the data access experience in Quarkus by reading "Introducing Quarkus Data: One Gateway for Data Access" by Luca Molteni. buff.ly/qMPo3Gg
"Introducing Quarkus Data: One Gateway for Data Access" by Luca Molteni.

ALT "Introducing Quarkus Data: One Gateway for Data Access" by Luca Molteni.

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Why does this almost seem as the actual agent communication history? :) @piotrprz @DevoxxPL #devoxxpl
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Martin Stefanko retweeted
Quarkus (@QuarkusIO) profile picture
Quarkus
@QuarkusIOMay 27
We released Quarkus 3.36. It comes with the new (and experimental!) Quarkus Signals extension, a unified event bus for Quarkus. See our announcement for the full list of changes! quarkus.io/blog/quarkus-3-36…
Quarkus 3.36 - Quarkus Signals, embedded SBOMs, OIDC SPIFFE authentication, and more

Quarkus 3.36 - Quarkus Signals, embedded SBOMs, OIDC SPIFFE authentication, and more

We released Quarkus 3.36, which comes with the new Quarkus Signals extension, embedded dependency SBOMs, OIDC SPIFFE client authentication, arbitrary keystore/truststore types, and several other...

quarkus.io
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Martin Stefanko retweeted
BrnoJUG (@BrnoJUG) profile picture
BrnoJUG@BrnoJUGJun 5
#bJUG talk announcement! Quarkus vs Spring in 2026: What Spring Developers Need to Know Speaker: Martin Štefanko @xstefank - Principal Software Engineer @IBM 25. 6. 2026 18:00 Clubco Green Event Space & youtube.com/watch?v=1lUC3IlS… Registration - meetup.com/brno-java-meetup/…
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Bruno Souza (@brjavaman) profile picture
Bruno Souza@brjavamanApr 28
And the @BrnoJUG is streaming our career conversation LIVE!! Join now! youtube.com/watch?v=IeXOlmD0…
Crafting Your Developer Career: interactive discussion

Crafting Your Developer Career: interactive discussion

We will do something slightly different this time: a live, interact...

youtube.com
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Martin Stefanko retweeted
BrnoJUG (@BrnoJUG) profile picture
BrnoJUG@BrnoJUGApr 14
#bJUG talk (discussion!) announcement! Crafting Your Developer Career: interactive discussion Moderator and main speaker will be a @Java_Champions @brjavaman! 28. 4. 2026 18:00 Clubco Shatland & youtube.com/watch?v=IeXOlmD0… Registration - meetup.com/brno-java-meetup/…
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Martin Stefanko retweeted
BrnoJUG (@BrnoJUG) profile picture
BrnoJUG@BrnoJUGMar 26
We're live! youtube.com/watch?v=ejhok_F3…
Still Brewing: What’s Hot in JDK 26

Still Brewing: What’s Hot in JDK 26

Speaker: Jiří Andrlík (software engineer at IBM, https://www.linked...

youtube.com
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Martin Stefanko retweeted
Quarkus (@QuarkusIO) profile picture
Quarkus
@QuarkusIOMar 25
We released Quarkus 3.33 LTS and Quarkus 3.34. The former is our new LTS stream, maintained for 12 months, succeeding to 3.27 LTS, the latter comes with enhancements and new features. Happy upgrading! quarkus.io/blog/quarkus-3-33… - quarkus.io/blog/quarkus-3-34…
Quarkus 3.33 LTS - new LTS version

Quarkus 3.33 LTS - new LTS version

We released Quarkus 3.33 LTS, our new LTS version.

quarkus.io
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Martin Stefanko retweeted
LangChain4j (@langchain4j) profile picture
LangChain4j@langchain4jMar 5
#LangChain4j 1.12.1 is out! 🎉 github.com/langchain4j/langc…
Release 1.12.1 and 1.12.1-beta21 · langchain4j/langchain4j

Release 1.12.1 and 1.12.1-beta21 · langchain4j/langchain4j

Notable Changes Agentic: generate a HTML report of an agentic system topology and execution by @mariofusco in #4600 Agentic: allow to integrate an MCP tool as a non-AI agent by @mariofusco in #463...

github.com
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Martin Stefanko retweeted
Quarkus (@QuarkusIO) profile picture
Quarkus
@QuarkusIOMar 5
We released Quarkus 3.32.2, with the first round of fixes for our 3.32 stream. Looking forward to more reports as we stabilize the upcoming 3.33 LTS. quarkus.io/blog/quarkus-3-32…
Quarkus 3.32.2 - Maintenance release

Quarkus 3.32.2 - Maintenance release

We released Quarkus 3.32.2, a regular maintenance release.

quarkus.io
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Martin Stefanko retweeted
BrnoJUG (@BrnoJUG) profile picture
BrnoJUG@BrnoJUGFeb 19
We're live! Spring Forward: News in Spring Boot 4 and Spring Framework 7 youtube.com/watch?v=V0byGgRk…
Spring Forward: News in Spring Boot 4 and Spring Framework 7

Spring Forward: News in Spring Boot 4 and Spring Framework 7

Speakers: - Jiří Pejla- Hans Christian Granum (LinkedIn)Java ...

youtube.com
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Martin Stefanko retweeted
BrnoJUG (@BrnoJUG) profile picture
BrnoJUG@BrnoJUGFeb 19
#bJUG talk announcement! Still Brewing: What’s Hot in JDK 26 Speaker: Jiří Andrlík - software engineer at @IBM 26. 3. 2026 18:00 Clubco Green Event Space & youtube.com/watch?v=ejhok_F3… Registration - meetup.com/brno-java-meetup/…
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Martin Stefanko retweeted
Quarkus (@QuarkusIO) profile picture
Quarkus
@QuarkusIOFeb 18
We released Quarkus 3.31.4, a new maintenance release for our 3.31 stream. Quarkus 3.32 will be released next Wednesday! quarkus.io/blog/quarkus-3-31…
Quarkus 3.31.4 - Maintenance release

Quarkus 3.31.4 - Maintenance release

We released Quarkus 3.31.4, a regular maintenance release.

quarkus.io
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