The whole interview process was about two weeks.
First I sent my application via their website. Then I got a call from a sales manager who seemed to be too senior to do the first interview. That interview went well but was also quite unprofessional. Basically, he explained everything about Adyen and talked about life, then I asked some questions and we didn't speak about me.
A second interview followed which was more aimed at who I was. It didn't contain any difficult questions, just probing for my motivation. In the end I wasn't sales-oriented enough unfortunately.