I applied online. The process took 3 weeks. I interviewed at Arkamys (Paris)
Interview
I went through a 3 interviews process that lasted 3 weeks. The first one with the department you are supposed to work with, the second one with the HR, and then the third one more technical. Before having the technical one make sure that you understand on a strong level audio processing and how "to make a sound better". It's not only about audio processing but also on how "basic acoustic" works.
Interview questions [1]
Question 1
They asked to have a deep understanding of audio processing.