Worst interview experience. Seemed like it was pre-decided to reject me. The interviewer was extremely rude and had a bad tone. The questions were something like this - 1) What is your name ? and in a tone like she was talking to a servant. One of the worst questions was - What is the architecture of twitter product ? What surprised me is that - I am interviewing for twitter, how would I know what architecture would twitter have. Rather, I can describe the architecture of the products I have worked on. Such questions will give you an indication that it has been pre-decided to reject you. I am not sure whey do they waste time then. I had not expected twitter to be like this.