Pros
At BMGF I worked with some of the most remarkable colleagues - not just intelligent and accomplished, but truly kind and caring folks with unique backgrounds and life experiences to contribute. Benefits are outstanding. Wonderful, consistent learning opportunities and depending on your team, chances to stretch and gain new skills with exciting projects.
Cons
Nothing dominates an organizational culture more than how it defines success. At BMGF, success is working as diligently as possible, as often as possible, and being the smartest person in the room (or at least in your subject area). Its borderline obsessed with how "complicated" and "difficult" its work is, and it sometimes seems like you earn more points for taking apart a problem analytically, than actually figuring out how to have tangible impact The result is a very curious, learning-oriented, but ultimately inward-facing organization that's more afraid to fail than its willing to admit. If you're already working in development, this won't be news to you. But any person should know what you're getting into, and how you want to navigate it - work/life balance will be 100% up to you.