Multiple rounds of coding questions. Mostly leetcode Easy/Medium questions. One of the interviewers feels like he knows all the things and tried to humiliate the work that I have done in my career as if he is doing path-breaking research. Doesn't sound professional as he addressed me as "sir" and tried to mock me during the interview. The interesting part is they may reject based on the work you have done in your career.

Everything depends on the level of prep. If prep is good then the interviews are easy to crack, if not then it will be the most difficult one. The number of rounds can increase or decrease based on the requirements. On an average 4-6 deep technical discussions is expected