Pros
There are so many pros. working for Facebook it's hard to keep count. I'll cover 3 topics, which interest most people: 1. Work - probably the most meaningful and impactful work you can do in your life IMO. It's incredibly challenging, and going to work feels like a mission. You do things differently at FB, and you get to learn and explore many areas of true R&D, to eventually become a better engineer. 2. People - Kind, incredibly smart, helpful, trustworthy and fun! I've been at FB for about 6 months now, but I never saw/experienced such a company DNA before with respect, gratitude, kindness and awareness to bias. People here are remarkable. 3. Benefits - fantastic! I don't know other places who offer such benefits in such scale. I'm sure there could be, but in general I think FB is probably at the top.
Cons
None. Nothing is ever perfect. But I think this is pretty close. If you don't want responsibility, then this is probably not the place for you.
