They offer you either phone interview or online test. would recommend online test and cheat as the level of questions is freaking hard. If you go for phone interview, the phone interview is gonna be harder as the level of questions is too high

Telephonic round: The interview started with no introductions... open coderpad, copied a problem... "read the problem and solve it". I tried explaining the problem and how i would solve it, but the interviewer did not have the patience to listen. Anyway I started coding and there was a STL warning for which I thought I would ask a question. I got the response "I do not know C++". In all, my code compiled but the O/P was not correct... I ran out of time. As expected I got a reject. But the experience was one of the worst I had gone through in my 12 years of industry experience. The person on the other side of the phone was super rude and I completely missed the point of such an interview (they can very well give me a timed coding challenge and that way I would have done the same without the weirdness of talking over phone with a rude person). I would recommend folks to rather put your brains towards a better company (with humble people).