Bloomberg Sr. Software Engineer interview questions

I had two telephone and one on-site interview. The on-site one took about 4 hours and I talked to about 5 different people from software engineers, tech leads to managers and HR. I liked that they were prepared and knew exactly what they were asking for. Questions were not definitely not easy but not extremely difficult either. It was all very professional.

There are 6 rounds of interviews, one of them is lunch. The first 2 rounds are technical interviews. The last 3 rounds interview includes 2 managers and 1 HR. The whole process is from 10 am to 4pm. Really really long.