Pros
Good pay and equity opportunities, but working on cutting edge technology is very rewarding in itself. Not many companies are consistently "visionary" but this seems to be one. Not really any "lifers" taking up space waiting to retire, everyone is engaged and people mostly smile and say "hi" to each other in the halls. Be confident and have thick skin because if your idea or result is poor it will be called out. Note that this is a "pro".
Cons
Lots of work to do, the pace is energetic and things can feel chaotic. Amazing how a company with >10K employees can still feel like a startup sometimes with crude or non-existent processes. Tremendous growth means we're short on cubes and cafe is crowded, can't wait for the new building to open.