I applied through university. The process took 4 days. I interviewed at Works Applications (Kharagpur, West Bengal) in Dec 2013
Interview
They sent an assignment to be done for all interested students in our campus. Then they selected students based on the solutions and held one round of interviews. Unfortunately they had to leave with some problem regarding their flight.
Interview questions [1]
Question 1
I would n't call it difficult . The problem is "Given two numbers M and N, p is from [M,N] and q is from [1,p-1], find all irreducible fractions of p/q."