I was referred to the company by one of my friends there. After one month, I got a call from HR and asked for a telephonic interview for the next day. I was shocked for such a short notice. However I accepted the challenge. Telephonic interview started on time. It was more like checking whether I know the fundamentals of C language or whether am boasting. It was moderately tough but it was interesting. The telephonic interview was followed by 2 rounds of face to face technical interviews. Negotiation discussion with HR. Face to face interviews were really difficult and they really made me write programs before them. It was all about data structures, design patterns and the logic how the problem was attacked.