I applied online. The process took 3 weeks. I interviewed at Harmony (Barcelona) in July 2019
Interview
The first most startling interview I've had in my 20 long years of experience. Although it lasted more than 3 hours, it was well planned and they optimized my visit as fully as possible.
Interview questions [1]
Question 1
In general, questions about practical things, without too many theoretical ramblings.