Phone screen first round, easy brain teasers, then super day with 8 rounds of interview plus previous day coding challenge. 4 interview in the morning, if you passed, you get invited for more interviews in the afternoon

Online test with 6 math questions one linear algebra, one statistics, three probability theory (one Bayesian, one alternating sequence and one combinatorial) and one geometry question which was about d-dimensional spheres. After taking the test, they did not move on with me.