Pros
The office location is excellent (35th floor in the One Liberty building, Center City Philly)
Cons
Awful hours, consistently have to work past midnight, 7am meetings, you have to be available 24/7, pay is low for similar work in the area (I got a 15k raise when I went to a different company... from 75k to 90k), you get put on multiple projects at once and they all expect 40 hours/week. They trick you into thinking it's a "privilege" to work there so that you convince yourself their abuses of your time and life are okay. They will tell you straight up that what makes them different is that they value work/life balance, but after 1 month there you learn that's a huge joke. I feel bad for the children of parents who work at ZS because they will NEVER get to spend time with their parents. Truly a toxic work environment and everyone is miserable with an insane fake smile.