3 rounds:
1) online aptitude test: consisting 20 - 25 mcqs related to open source technologies such as php, linux,javascript, JSON etc.. aptitude questions were different for open source and .net profile. time alloted was 30 mins
2)technical round: was purely technical and interviewer focused on candidates overall technical knowledge.. qts on php, open source, run php program through commandline, caching, mongodb.. were asked