I attended interview at Airfi and faced 3 round (1 written and 2 technical). After that they will tell me that you are good in problem solving good in Android (They hiring for Amdroid Developer). Then they told you where we will fit you we can not figure it out. You should also good in Hibernat, Spring or Node. So if you dont know these dont go for intervuew. I am still waiting for the feedback.