They ask basic questions from the field of Calculus, C++, Programming basics and control theory. Being a generic interview, they offer you a very generic position and depending on your interest and performance move you to a specific department within 18 months. The questions on calculus most probably start with solving Matrices problems on paper. or they can ask you certain theorems of Mathematics. For the rest of the sections, they would ask you terminologies and definitions from the subjects. On clearing the HR round, which is basically collecting information about you and the technical round mentioned above, they invite you to visit their facility in Nattick for a group/ panel interview. The questions asked there are a combination of personal and technical questions. Upon selection they have an induction process which takes place at the first of every month.