They called me to pass by the R&D dep for interview. I had a quick chat with CEO about my career as a student ( I had no working experience ). After that he asked me to take two tests. One was about linux and for the other one he asked me whether I 'd like C++ or pyhton. (linux questions were of average difficulty like: command to check ip address, change file permission, count words in a file, etc. C++ test was a bit advanced. Questions like: give the output of the next program: mostly had to do with C++11 boost , multiple inheritance, standard threads. There were also some easy questions I cannot recall.)