I applied online. I interviewed at BT Group (New Delhi) in Apr 2016
Interview
There will be around 4 rounds which will includes following
1) Technical with basics
2) Technical with core design skills
3) Managerial to judge intellectual level and market awareness about security
4) Managerial to gauge your stay in firm
Interview questions [1]
Question 1
Design level of questions will be asked like what is LLD, HLD and how will you design infrastructure for an application