Three rounds:
1. Technical screening round.
2. Main technical round.
3. Managerial round.
First you get a call from an HR who schedules a call with a production engineer for a technical screening where they check basic concepts related to internet protocols & networking to judge if you could be moved to next round or not. Then a main technical round happens where you are grilled to max and questions are asked related to your current role & the role for which you have applied, once you through this you get to managerial round which is easy, where you get to speak with couple of managers who check your overall skills to handle the position for which have applied.