The first step of the interview process was a half hour phone call with an HR assistant.

It was a general talk about ambitions, motivations and the former technical experiences.

The second step was a three hours long technical interview with three different professionals from the company.

The first one was with a senior colleague and about general Java related questions.

The second one was with the technical leader of the group.

He asked about deep knowledge in OOD a related stuff.

And also some algorithmic questions and coding challenges.

A third was almost the same like the first one.

Java related questions, deeper understanding of how the JVM works during method invocation, garbage collections etc.

There were - in my opinion - some mostly irrelevant questions, or I would rather say that they put a great emphasis on things that are not crucial. For example they asked several times about the SOLID principles of OOD, and related to that about cohesion... etc.