Circles interview questions

Had 4 rounds interview. 1st was a screening round. He asked basic question about why would I want to join circle, a little bit about me and my experience. 2nd round was about System design and asked me to design a ticket booking system. Asked a lot of followup questions but it was fun. The next one was a coding round where he asked me to write APIs and code for the ticker booking systems. The next round was a behavioral round and asked basic questions for 30 mins