I applied online. They took very long to respond. I was invited for a telephonic interview two months after I applied, and then it took a another two weeks for them to get back to me for a second interview, and then two more weeks for a final interview -- all over the phone. Questions were asked on RCTs, surveying etc. The interviewers were all friendly, helpful and wanted me to get the answer right. Much of it was like a conversation. I was told that I'd have to work for 6 days in a week, 9 hours (or longer) a day -- which I found ironical for an organization that conducts experiments on poverty and behavioural economics; they ought to have known just how much this affects employee performance and productivity.