Telephone interview first and then onsite. The onsite interview took about 1.5 hour, with 3 interviewers(one of them is an observer, he didn't ask any question, and he helped me a lot), and the questions were mainly focused on data structure and memory complexity. If you pass it, you will presumably have an HR interview. I didn't pass the technical round, but the process seems smooth to me, and the interviewers were very nice. I tortured them with my poor coding skills, and I felt sorry for myself and for wasting their time, and I forgot many important things I should've remembered. Don't spend too much time on practicing specific programming problems which is not very useful, and I think one should make sure their preparation covers all the basic knowledge of the language they choose. Anyway, Bloomberg is my dream company, but guess I am not good enough now, and I might try again after I am more prepared.