First I got call from HR, scheduled interview on Saturday. First there was written test(pen, paper test) which includes 3 codes and 7 questions. Then there was face to face interview. He asked questions on C++, Linux, OS. After that HR called me after 2 weeks for further discussion. Again they took one more technical round followed by HR disscussion. Next day I had call with one of the director, he asked everything about project and all. Here are some questions they asked Private constructor How can we make it work? Static member function why cant include nonstatic member variables? Structure padding Typecasting Prototype of malloc Dynamic memory Smart pointers Types of casting Context switching Dynamic binding run time Prime numbers code optimal solution String reverse Recursion Threads, Reinterpret cast Dangling pointer Copy constructor Polymorphic class? Data structure Capacity of vector how to find Very unprofessional people. They told me one package but they gave offer letter with my current CTC.