Surprisingly, the interview felt much easier than I anticipated. The technical rounds were straightforward, with a focus on design questions, like creating a thread-safe shared counter and a low-latency stock price time-series store.

At one point, I realized the sliding window question was similar to a mock scenario I had practiced on prachub.com just days before. Despite feeling prepared, I didn't receive an offer, which was disappointing considering the overall vibe seemed positive during the interview.

Design a thread-safe shared counter that scales under heavy concurrent access

Find the top-K largest elements in every sliding window of size k

Design a low-latency stock price time-series store with efficient range queries