Pros
Great product, smart people, relaxed work environment, nice office space, free food & drinks. Some outstanding leaders. Some of the most intelligent, dedicated engineers that you'll ever find. Friendly, collegial atmosphere. The company is growing toward a compelling vision and will have a successful exit.
Cons
Highly political environment. Some of the most intelligent and committed employees have been shown the door because they didn't play the game right. Executive & managerial teams have some true stars, but also some total duds. A lot of the folks who have been there for a long time have grown cynical and are to be found whispering among themselves outside the building, "vesting in peace". The engineering team are rock stars, but are floundering amid a lack of process, cohesive vision, sensible product management cycles, and tools to make their work efficient.