Very choosy people. It is start-up which takes pride in their products. So, the culture is of getting things done and your inclination towards working across hierarchy for that. There were 4 rounds of interview and a screening before that. At each level, you are judged for the perfection and fitment. Did you really did what you claim and were you best at that? This is the line of most of the interviews. Cultural fitment is the topmost priority.