Process was fast, and simple. Responses were also in a timely manner, interviewers were friendly. My interview was also on-campus. C1 gives you an interview guide beforehand, and the process mainly follows the guide. My interview did not have a design question, but everything else followed the guide.

Online Assessment -> Power Day Interview. Power Day was a total of 4 hrs, three one-hour interviews with a one hr break in between. Included Technical (coding from scratch), Behavioral, and Technical Case (answering questions and fixing code).