Confluent

There was a short HR call and a Technical Interview (45 minutes). They asked an LC medium question. I did not do it that well. It was one of those days :(

Went through one screening and four rounds of interviews with Confluent. These were pretty standard: systems-based concurrency questions, system optimizations, and design rounds. The interviewers didn't seem very open to creative (and more optimal)

I had a technical phone screen. I provided a solution with O(1) runtime and O(n) space. The interviewer was fixated on optimizing the solution to achieve O(1) space. Looking at the solution online, I doubt if someone interviewing for a QE role would