The process went pretty fast. I had a phone interview with HR few days after applying online and they scheduled a technical interview with 3 senior engineers/team leads in French. The first part of the interview consisted in describing my past experience, then they showed me some of their products and asked me to describe what I was seeing;I couldn't really say much. Last, I had a written exam to test my knowledge on basic electronics; I am a junior designer and I found the test rather easy, so my feeling is they just want to make sure you know basic concepts. In order to prepare for the interview, it may be useful to read a bit about power supplies for X-ray machines and about IGBTs. After the interview, they showed me around and I received a written offer on the same day.