I applied through an employee referral. The process took 3 weeks.

The HR contacted me about 2 weeks later, and they gave an online HackerEarth coding challenge and asked me to complete it. Then the F2F interview was scheduled in a week's time. As I was not very much well-versed with graphs and dynamic programming, which they were expecting, I got rejected. So I guess they really want guys with good coding skills in graphs and dynamic programming.

The questions included zigzag level order traversal of a binary tree, the wave array problem from Interviewbit, and the singleton design pattern code in Java.