I applied through their career website and was referred internally by a friend of mine. I was contacted within a day of applying by a recruitment manager who set up a time with me a couple days later for a phone interview. When that time arrived the recruiter missed the call. I followed up with my contact at ZS who referred me and he was able to track down the recruiter to reschedule. When we finally had the phone screen the recruiter was great and made the phone interview very easy. It was basic questions about why ZS, why consulting, etc. After the call the recruiter emailed me to set up the next round of interviews (2 behavioral and a WebEx case). I gave my availability but she stopped responding to my emails. I followed up with calls and emails over the next few weeks but was being dodged. Overall I thought it was incredibly rude and inconsiderate. Probably more a reflection on one individual and not the company, but still...

Interview process was easy. They were very friendly,asked few puzzles in starting then some questions from my favorite subjects and why analytics etc. Fifty percent of puzzle were from the net which i already did and few problems were new, they just want to test your IQ, if u answered 80% puzzles correctly then others things became very easy and there is 100% chance u r going to placed. Overall interview was very good and not any difficult question asked by them.