After applying via a Job portal mailer, I got the first call from HR about in 2 weeks in which we set a 1 week later date for a telephonic interview. It was to be a technical round.
The technical interviewer asked questions ranging from Basics to project related to advanced data structures and then position related.
After that a week passed and I was aked for a 2nd round on skype video calling.
In that we had project related stuff and managerial questions.
Then next day I received a call from the HR stating that I am shortlisted and have to take another skype video call for HR interview. The HR interview was long and tedious and questions were asked to see my willingness for 24/7, travel onsite, relocation from current city to Kolkata, and many others like stress handling, customer handling, etc.