They herded all applicants, of which there were approximately forty, to a written test. The instructions said that we can use pseudocode to solve the problems, but halfway through the test, they said that they wanted actual code, which takes longer to write correctly.

I attended walk-in interview. Two rounds were conducted one in person and one virtual round. In both rounds questions are constructors, destructors, copy assignment, copy constructor, basics of STL, smart pointers, mutex, semaphore, basics about threads, storage containers, virtual functions, vtable, OOPS, run time polymorphism, overriding, overloading, deadlock, static vs global. There was third round from client asked to explain architecture of current project, asked to implement factory pattern, singleton pattern and design a class to make led blink.