Bloomberg Data Scientist interview questions

They recruited me. There were many rounds of interviews, the process dragged for months. They scheduled the interviews for several hours stretching from the morning to the mid afternoon with no breaks and no lunch. At some point they told me they were finished with the interview process and that they were going to make an offer, and then they changed their mind and asked me to come back for yet another round. I already had some concerns about the position, but I after that I decided I definitely didn't want the job.

There was couple of phone screens that they asked programming questions as well as some basic questions on machine learning. The interviewers were usually interested to know how much you are familiar with new trends in machine learning such as deep learning topics. After passing the phone screens successfully they invited me for onsite interview. I should say I find Bloomberg office very fancy and modern. I had first a presentation of my Ph.D. research followed up with 3-5 in person interview that they examined depth of my knowledge about programming, machine learning and general system design skills.