The interview process involved a take-home assignment, a phone interview, and then an on-site interview.

Overall, the process was very smooth, and everyone I interacted with was very positive. I was surprised not to have received an offer.

When I asked for feedback, they said one of my interviewers wasn't happy with the amount of time I took discussing a question with him, but I had no indication of that during the interview itself.

The home assignment was a pretty straightforward task that could be implemented in a variety of ways. They were looking for efficiency and future functionality, probably. Overall, I'd say it takes 2 hours max.

One of the onsite questions was about the best way of preserving the max of an incoming stream in the most space-efficient way under different scenarios.