Starting from a first round interview with the founder, the second round was more of a coding one. There were simple questions asked from CS Data structures/Algorithms and I had to code it on stypi. This was followed by a small discussion about the company, type of work that the interns do etc.
Two days later, I got a call for the onsite interview. The people were very friendly, and the office was nice. I had two rounds of interview that day, that lasted at about 2 hrs, plus a brief discussion on the company. Couple of days later, I got a mail saying that they had already found a better candidate.