Bloomberg Senior Software Engineer interview questions

More specifically, this was for the role of NDIS Senior Software Developer. I received a HackerRank challenge with 3 questions and a 90 minute limit. The input arguments to the questions questions were worded in a misleading way, and I had to use trial-and-error to determine the correct input and/or output data types. I did fairly well as determined by the number and percentage of passing tests, but I received a rejection email anyway.

First a phone screen with live coding on Hackerrank. The onsite consisted of two rounds of technical interviews. Each round had two interviewers which asked questions in turn and again live coding on Hackerrank. Additional rounds with group managers if the previous ones went well.