Lenghty and non structured in a good way. Too many questions about obsucure features and unusually long time between feedbacks.
My followup questions we unanswered as well.
I wouldn't recommend interviewing their if you value your time.
They have a very straightforward process. Everything was clear. Recruiters are very friendly and helpful. During the technical interview, engineers were trying to give hints when applicable. Respond time is also very quick. Positive experience in general.
Interview questions [1]
Question 1
What is your motivation?
Reading their website would help.
Take home assignment, 2 technical interviews and 1 behavioural interview, with HR calls inbetween to check on status. Overall a very toxic process. Be prepared to be grilled and then low balled. Some questions were irrelevant and even interviewers themselves did not know the full answer, only to use that later as an excuse to offer lowe salary.