Pros
Good industry defining product. You get to work with very smart and talented team members.
Cons
This company is nothing short of a dictatorship. It's unreasonable to expect not to have to work hard, but there is essentially no reward for keeping your nose to the grindstone. It's not even a meritocracy. There is nothing wrong with high stress environments but potential for personal or career growth is basically non-existent. Don't even look at this "startup" if you expect to have a positive experience. Senior Management doesn't operate as a leadership role, but rather the CEO's entourage that is forced to validate all her decisions, no matter how unreasonable they may seem. There is also a tendency to micromanage, no matter what group you are in. For example, the CEO asks for weekly reports with personal rankings so she can keep tabs on every employee. It's not meant for transparency, but rather a tool to make everyone's life absolutely miserable. She will personally walk over and actually yell for your report if you don't write one. She has also gotten managers to threaten their group with negative performance reviews if they do not submit these reports on time. This toxic work environment causes even the most level-headed employees to become selfish and play the blame game and throw each other under the bus whenever possible.