One phone interview, following the onsite interview with 7 people. Manager asked about the probability theory and GARCH model. The onsite interview mostly behavior questions. Overall, not very hard. The whole process took around one month, from the first interview to offer.

HR contacted me first. After several days got a phone interview, which took about one hour. Two people interviewed me, where one of them had statistical background. What they asked were very basic questions about GLM and some general behavior questions