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Champion

Gerrit Grunwald

Azul

Gerrit Grunwald is a software engineer that loves coding for around 40 years already. He is a true believer in open source and he is an active member of the Java community, where he founded and leads the Java User Group Münster (Germany), he is a JavaOne rockstar and a Java Champion. He is a speaker at conferences and user groups internationally and writes for several magazines.

Badges 9

Talks 14

  1. Devoxx Poland 2026

    Scotty I need Warp Speed - Ways to improve the JVM startup/warmup

    June 2026Java & JVM

  2. Devoxx Poland 2025

    TrashTalk - Exploring the JVM memory management

    June 2025Java & JVM

  3. Devoxx Greece 2025

    We hate code - The !joy of maintaining dead code

    April 2025Java

  4. Voxxed Days Bucharest 2025

    Trash Talk - Exploring the JVM memory system

    March 2025Java

  5. Voxxed Days CERN 2025

    Trash Talk - Exploring the JVM memory management

    January 2025Java

  6. Devoxx Belgium 2024

    Trash Talk - Exploring the JVM memory management

    October 2024java▶ Watch

  7. Voxxed Days Ticino 2024

    Wargames - Java vulnerabilities and why you should care

    January 2024Security

  8. Devoxx Belgium 2023

    Wargames - Java vulnerabilities and why you should care

    October 2023Security▶ Watch

  9. Devoxx Ukraine 2023

    Welcome to the Jungle - A safari through the JVM landscape

    September 2023java

  10. Devoxx UK 2023

    Welcome to the Jungle - A safari through the JVM landscape

    May 2023java

  11. Devoxx Greece 2023

    Welcome to the Jungle - A safari through the JVM landscape

    May 2023java

  12. Voxxed Days Bucharest 2023

    Wargames - Java vulnerabilities and why you should care

    March 2023java

  13. Voxxed Days Romania 2021

    DiscoAPI - OpenJDK distributions as a service

    October 2021Java Language

  14. Devoxx Belgium 2015

    Healthcare for the Elderly using the IoT

    November 2015future