Meta Sr. Software Engineer interview questions

Interviewee - rude and aggressive and doesnt want to hear what you have to say. Very very very rude Sou Ind@n person. Always saying ur code is not optimized and saying why ur using BFS for binary level traversal. I did in log n though. This is the first time in my life somebody asked me why ur using BFS for binary level order and why queue. USE DFS. He said this is WRONG. NO BODY USE BFS.... Please dont take interviewees if ur NOT Interested in taking it.

2 coding sessions with 2 problems to solve, 2 system design sessions, 1 behavioral. First coding session I did well, but for the second I didn't clearly undestand the problem and solved another problem. Because of very strict timing I didn't have a chance to solve second problem and failed here. For one of the system design session interviewer didn't explain well one of the functional requirement but expected to solve it from me. I realized that at the end of the interviewer and also failed because of lack of time and misunderstanding.