One introduction phone call. One HR talking about half an hour. Suggested one long run interview with full disclosure - 3 hours. Or can be break to two separate interview. They gave me an offer in a week.

Hiring was pretty straightforward - met with HR representative, than she set up a two-stage interview process. I met with future peers at once and had to answer the questions at once, not one-by-one as in some other companies. The process was very friendly but also very professional. The company is located at a closed location, close to a nuclear reactor under constant international monitoring. Therefore the security process to enter the location is reasonably tight but nothing to worry for an average person.