The interview was completely aptitude base , we have been asked tricky mathematics questions for checking our quantitative skills. They dont care about your technical skills or projects for their developer trainee postion. I gave interviewer my resume and he kept it and said to me I wont be asking you anything from resume instead he had a paper he sat with me and asked me to solve the questions he gave hints whenever I stuck somewhere I was able to finish my questions really quickly in some 25 min while other peers took around 1 hour.