Events

2026

Devoxx Poland 2026

2026-06-17 – 2026-06-19   Krakow, Poland  Event website  Schedule

• Never a Null Moment with JSpecify

J-Spring 2026

2026-06-04   Utrecht, The Netherlands  Event website  Schedule

• Never a Null Moment with JSpecify

jPrime 2026

2026-06-03 – 2026-06-04   Sofia, Bulgaria  Event website  Schedule

• Never a Null Moment with JSpecify

JUG Noord

2026-05-12   Leeuwarden, The Netherlands  Event website

• Never a Null Moment with JSpecify

Jfokus 2026

2026-02-02 – 2026-02-04   Stockholm, Sweden  Event website  Schedule

• Level Up Your Java Streams with Gatherers video

2025

ArnhemJUG meetup

2025-11-27   Nijmegen, The Netherlands

• Level Up Your Java Streams with Gatherers

Øredev 2025

2025-11-05 – 2025-11-07   Malmö, Sweden

• Level Up Your Java Streams with Gatherers video

JavaCro'25

2025-10-13 – 2025-10-15   Rovinj, Croatia

• Level Up Your Java Streams with Gatherers

Voxxed Days Crete 2025

2025-09-26 – 2025-09-27   Irákleion, Greece

• Level Up Your Java Streams with Gatherers video

Voxxed Days Luxembourg 2025

2025-06-19 – 2025-06-20   Mondorf-les-Bains, Luxembourg

• Level Up Your Java Streams with Gatherers video

Amsterdam JUG meetup

2025-05-22   Amstelveen, The Netherlands

• Level Up Your Java Streams with Gatherers

TechArena meetup

2025-05-15   Voorburg, The Netherlands

• Level Up Your Java Streams with Gatherers

Rotterdam JUG meetup

2025-04-02   Rotterdam, The Netherlands

• Level Up Your Java Streams with Gatherers

2024

JavaCro'24

2024-10-14 – 2024-10-16   Rovinj, Croatia

• Mikado and the Art of Refactoring
• It takes more than LGTM to do a proper Code Review

JCON Europe 2024

2024-05-13 – 2024-05-16   Cologne, Germany

• It takes more than LGTM to do a proper Code Review slides

2023

JavaLand 2023

2023-03-20 – 2023-03-22   Brühl, Germany

• It takes more than LGTM to do a proper Code Review

2020

Den Bosch JUG meetup

2020-05-13   Online

• Mikado and the Art of Refactoring

2019

Utrecht JUG meetup

2019-12-09   Utrecht, The Netherlands

• Mikado and the Art of Refactoring

JFall 2019

2019-10-31   Ede, The Netherlands

• Mikado and the Art of Refactoring slides video

IT Development Café Amsterdam

2019-06-18   Amsterdam, The Netherlands

• Practical Security in a DevOps World slides