Still trying to be a start up even though we're a big company. Still fun, smart and a great place to be
Pros
Fun culture, super smart people, great benefits (for non married folks), still retains the "let's do everything at a breakneck speed" mentality. The hierarchy is still pretty flat. You are always in charge of your destiny so it's pretty much up to you to step up or sit down. If you sit down too long, you won't last. This is a company of doers, not debaters. There is opportunity everywhere as long as you have the attitude to do something with it. Most everyone is incredibly helpful.
Cons
Moving fast doesn't always mean doing it right - While you're pretty much allowed to try anything, as a large company, we should slow down and mature some of the processes in order to maintain a high quality of shipped products as opposed to letting the culture of "fail fast" cause duplicate work.