I occasionally give workshops at conferences or community events. These are usually public and sometimes even free. Check it out!

You can also hire me as a trainer for in-house workshops teaching your developers about Java 8 and later as well as about JUnit 5.



Nicolai provided us with deep insights into JUnit 5 in just one day. He is an excellent trainer and we can recommend him to everyone who is eager to learn more about testing their code.

Andreas Wolf, Development Customer Care at 1&1


The Java 9 Workshop with Nicolai provides a focused overview of the Java Module System and the new Java 9 features with practical exercises and much additional information. We spent two exciting and busy days with much content which created the desire to discover more!

Patrick Baumgartner, Software Craftsman and Founder of 42talents