There were two rounds of interview. One was coding another was HDL round. The interview was through virtual mode, and the schedule was very tight. They asked me to write code. Not sure if these coding round makes sense at the level of Principal Engineer positions but that is the way it is done here.

Recruiter contacted me for Hiring event ( 3 months after applying through LinkedIn ). Three round of interviews. First round was with somewhat junior level, Asked a dynamic programming problem, and I started with Brute-force approach, interviewer interruptted right there and wanted to have most optimal solution in first iteration. Sort of negative, but I coded up pretty fast and it passed all the scenario. May be negative feedback second round was with somewhat senior engg, Asked problem and if time permit few other sub-problem. I solved this with recursion and sub-problem were solved as well with minor tweak in code. Theoritically explained another sub-problem solution and recruiter seemed impressed with approach and saying himself, he saw 'new' and 'interesting' way to solve this problem. After that some design problem, which I couldn't understand completely however almost gave right answer. My feedback for is strong positive Third round with Group Engg Manager, who talked pretty nicely and neatly. I could see authority overall. HE asked some abstract design problem, which I understood however couldn't code up properly. I feel thats where my candidature went downward direction. Got rejection email after a day.