Pros
This is the best place I have ever, and probably will ever work. You have autonomy and every resource to drive your own success, business impact, and career growth.
Most companies have a mission; some say they follow it, and extremely few are actually mission led. Facebook truly believes in making the world more open and connected; including those people who aren't even online yet. Every role and department ladders back to that.
In advertising sales, we have the goal of building our client's businesses by connecting them to the consumers who matter to them. More importantly, we ensure that people on Facebook are seeing ads that are relevant and high quality, this delivers shared value both for the advertiser and the end person using our products. We also have proven and measurable results across verticals, which drives continued client interest and adoption.
Having come from another founder led company, Mark is incredibly brilliant, open, honest and hard working. He surrounds himself with fantastic people, listens carefully, cares about the people who work for him, and makes long view decisions for the health of the company.
Management and the people who work at Facebook follow leadership's example, everyone rolls up their sleeves to get the work done, and is incredibly grateful to be here.
As a woman it's also inspiring and impactful to have female leadership at all levels, and colleagues who are incredibly encouraging. I personally experienced this when a male peer encouraged me to apply for a management position on our team. He referenced the known bias that women are less likely to apply if they don't have 100% of qualifications vs. men who take it as a suggestion. Beyond gender, the entire company strives for diversity and acceptance.
Cons
You have to be very self driven to succeed. Seeking out and maintaining internal relationships is critical for success. If you enjoy titles, offices and structure, this is not the place for you!
We have a saying at Facebook, "nothing is someone else's problem". That means you might be having a CMO level meeting with a client, and then helping clean up the meeting trash afterwards.