Meta | on-site | E4/E5

Time to give it back to the community

Round1: Variation of https://leetcode.com/problems/simplify-path/ / exactly https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree-iii/
Round2: https://leetcode.com/problems/merge-k-sorted-lists/description/ / variation of insert interval + merge interval (https://leetcode.com/problems/insert-interval/description/ | https://leetcode.com/problems/merge-intervals/description/)

Explained most optimal solution and ran with given examples in 5 minutes. implemented in another 5 mins. Talked about edge cases + complexity + extra test case walk through in another 5 mins.
Coding round went great, wanted some harder problem so I can stand out with this current market situation, but I did what I could.

Round3: Behavioral (typical questions you see, nothing special, but don't relie on youtube resources most of them are bad, like Why Meta? this type of question will not be in behavioral). Went pretty good for me.

Round4: Ad count aggregation system (picked product architecture, but ran very similar to typical system design question). Provided both live data case and accurate data case with both CMS and persistent data storage. honestly I am not sure about this round.

Waiting for feedback from recruiter, and honestly I wouldn't be able to do any interview better than this, but if this still fails, I don't know what to do next haha.
gl every one out there and keep grinding!