Superday
1st Round: Design a facebook (Design a database, which database and why? why monolith or microservice, API end points, give a brief overview of feed system and will it work).
2nd Round: Dfs traversal of a graph, the interviewer had 10+ years of experience and was interested in basic fundamental, design a simple rest apI to search user. I didn't gave an optimized answer for a question but anwered everyhing else.
* both the interviewer seem satisfied
3rd Round: one leetcode question to design a data structure I coded this problem in 20 mins. The second question was leetcode easy, mis-understood the problem, then I was stuck, he gave me a hint and finally explained the algorithm with a hint but couldn't code.
Hope this helps!
Thanks in advance!