Applied via stackoverflow. The first interview was a cordial, efficient chat with an HR person on Skype. She talked pay (I'd rate salary as 'moderate'), the company culture, and probed about my preferences and who I am. She also explained exactly how the process would work. A second "pair interview" was scheduled with two developers, also via Skype (since I was not in the Netherlands). We had a pleasant chat, although I questioned how engaged they were with my responses. It was very much a conversation, rather than a series of scripted questions, which I liked. Third contact was the HR person telling me they weren't going to follow up for a third interview. The reason given was something along the lines of "we don't think you would enjoy working in our culture". Found the wording of that a tad presumptuous, but nevertheless the hiring process was made perfectly clear.

Basically you send a CV and a motivation letter and then you wait for them to consider your application. Waiting time is very long. They can contact you even months after you originally applied.