I had a very pleasant interview experience. HR was very helpful. Most of the questions were c++ oriented, but the entry question was purely about the algorithm. Overall challenging questions.

3 stages: 1. hr interview: it was really good and comfortable interview. 2. hr-manager gives you a questionnaire about c++ basics. if you pass this stage, they invite you to technical interview 2. technical interview: type of questions: they show you some code snippet and ask you to find bug, fix bug or refactor. One question was about boost library.