Consistently professional and positive. There were two interviews with questions and then another hiring interview with HR to clarify any remaining points:

That was the HR interview. There was an on-site interview with technical questions as well as a programming test. The salary offer was standard for the market and good.

Java basics starting from inheritance, abstract classes, interfaces, data types.

Java Advanced: Lambda, Kotlin, OAuth, Spring Boot

Programming task to efficiently (complexity O(n)) understand and solve a problem. Similar to Codility etc. But for me, an unknown problem.