It is very important to have you refer to this company. If you are not referred, it is almost impossible to get an interview. My first interview was a general interview with not too many specific technical question. The second phone interview was a coding one. Then they asked me for an on site interview which was too long and took about 8 hours. During the on-site interview, I presented my work for the first two hours. Then we went for a lunch. After that there was an HR interview. Then technical interviews started. The first one was about pure programming, and the second one was about roboctis problems.