Pretty quick: one phone call, approximately 40 minutes, then a 3-hour in-house interview (3 parts: due diligence, technical task, behavioral questions), then rate negotiations.

The due diligence part was the usual Java and Scala drill; APIs, design decisions, FP vs OOP, etc.

The technical task was a down-to-earth one. You start with some codebase and tell what you would do with it. From there, you can start a discussion on design approaches, the decisions made in the code, the decisions not yet made, and the decisions you are going to make, etc.

The behavioral questions were as usual: why do you want to work here, how would your colleagues describe you, and so on.

Describe the Java Collection Framework.