It was a very long process to be honest. I started with my application in February and i got an offer in April. It started with an online assessment, followed by a telephone interview, a language test, and three in-house interviews. It takes quite a while for them to match your availability with the availability of the interviewers.
The difficulty of the interviews I would say is average. It is not that hard, it is even easy if you make sure you do research about Bloomberg, if you know about Bloomberg's products, competitors, competitive advantage, potential clients, the role itself, etc. Make sure you inform yourself about what is moving markets currently? So for me, i had to be updated on the interest rates and the oil prices. Make sure you are familiar with Sales Techniques and Strategies, and the different Asset Classes and the Finance industry in general. In every interview they asked me "Why Bloomberg?" so make sure you have your pitch ready. They might give you different cases where they will try to find out your thought process. Remember, they won't expect you to be experts in the oil industry or anything, they just want to know how you react in different situations and how you deal with them. Make sure you come off as motivated and driven to work for Bloomberg. As long as you show that, and prove that you have done your research, you will have a good chance! Apart from that, the interview atmosphere was always good, my interviewers very always really nice and made me feel comfortable, so there is nothing to worry about that! Good luck to anyone who is applying and I hope my questions below will help you with your interviews! :D