There were two rounds of interviews. The first one is the phone interview. This interview only lasted about 15 minutes. It was very chill for me and the interviewer was very nice. She just wanted to know the basics of who you are, why you're interested in applying, when you can start, etc. Just to see if you have potential and there will be basic problems prior to the second interview. The second interview was in person at their office, it was also not a long interview, about 25 minutes. It was a lot less stressful than I thought.