At first it was a fairly easy phone screening, asking me to sort a list of tickets according to their visiting order, a hash map would do this. Then after 2 weeks I was asked to select a onsite date. During the onsite interview, the first round is a list of algorithm and data structure questions with two people (I forget what questions are but they are just average difficulty). The second round is mainly about database I believe. I messed up that round because the interviewer did not ask questions directly but was trying to confuse me all the time. Yes, he was doing that on purpose, for example telling me 2.25 and 2.250 are encoded differently as doubles, and made me think he was insane or has learned CS from another world. So when he asked me to change the database structure according to a query, I did not went around the trick (you should use indices to speed up a query, not change the database) and was walked out after that round.