The interview process was pretty quick. It lasted 2 weeks because I wanted to elongate it as I was interviewing with other companies at the time.
There was one hackerrank challenge with two questions, there were leetcode easy in difficulty. I was moved to onsite right away after that. The onsite is longer than other ones I have done (~5 hrs), but I expect that from a startup. The onsite had 2 data structures and algorithms(45 mins) questions(45 mins), 1 system design question (45 mins), 1 ML design question (30 mins), 1 tech talk (15 min), and final cultural talks with CEO and CTO separately (about 20-30 mins each).
Even though it was long, I didn't feel that long. Everyone made sure I was comfortable and needed a break after each round. The interviewers were also very respectful throughout the interview.
