Vantaggi
The culture is work-hard, play-hard, with much thought put toward philanthropy and the environment (these altruistic goals really come from the top-down); great snacks; great office/environment; a lot of smart people all across the board; convenient location; great connections throughout the city due to the CEO being a former mayor; lots of educational opportunities outside of field, such as financial training for R&D folks, technical training for business-folks; payment for further education; sports teams to play on. Great healthcare, great 50% match on 401k; generous pay-raises and bonuses. Awesome training program for fresh-out-of-college hires: 12 weeks long, fantastic instructors for advanced C++ and javascript (and a lot more), plus great networking opportunities. Really well run. The whole company works like clockwork, from facilities to help desk to sales to software to data warehouse. Quite impressive.
Svantaggi
A lot of proprietary software development tools. A lot of customers don't like change; customers are paying a steep price, and thus often have a stronger say than they should.