I got the interview right at the campus job fair. I was informed to attend the interview next day. There were totally 4 rounds, the first two were technical interview by total of 4 senior engineers. The first one is easier, just some general question about data structure and object. Just in the afternoon after first round I was told to attend the second round. The second one is harder, I was asked two questions and wrote down my program immediately. The questions had nothing to do with language, just about your logical. Two days later, I was invited to the next round. But there were two rounds at one day. The first interviewer was a HR, just had a nice conversation. The last one was meet with manager. The manager also asked me one technical problem related to data structure, and asked me how to improve the performance due to complexity. So just always be prepared for technical questions for Bloomberg!