First round interview was over the phone. Second round was in the Global HQ in NYC. It was several rounds of group and individual interviews with other candidates. The executives or their direct reports were rotated through. They take cultural fit VERY seriously there and if someone doesn't like you, even if you're not being hired for the job, it's highly unlike you'll find yourself with an offer. I was thoroughly impressed with the experience and their time commitment to the process given I was only being hired for 3 months of work.

Very candid questions asked in group interview where they test basic business acumen , personality (HR-based), and domain preference (marketing, finance etc.) Before the interview they conduct personality test (online) and basic logic (online)