The in-person interview was quite challenging, but extremely annoying. There were three rounds of interviews. The person who conducted the first round must be conducting the first rounds all the time. He gave a good summary of what the company does. He was also the most arrogant of the lot. Even if you explain the concept thoroughly, it does not matter until you utter the keywords viz url signing, etc. The second round was conducted by someone who has been with the company from the very beginning and has worked on almost all of their systems. He was a little less arrogant. Went into dynamic programming. The last round felt like a lifetime. The questions were really crazy. If you answer the questions, the follow up was questions will become not only difficult but also too far fetched. Looked like he just came up with the questions on the stop and did not know the solutions himself.