Pros
Just a few colleagues. If you don't like your manager, you just wait a few months and you'll have a new one (probably worse than the previous).
Cons
Chaotic environment.
Toxic culture.
They'll add you to an on-call rotation. If you don't agree, say good bye to any raises and expect to be fired.
60 hours week are normal. You'll work weekends. One of the values of the company is 24x7 (so don't believe HR here when they say they don't expect you overwork because it is actually one of their values). If you don't, expect no raises, no options and you'll be fired quickly.
Pay is below average. They implemented a stock option plan that is so absolutely ridiculous that everybody minimally competent should quickly leave.
Benefits are below average.
Culture is toxic and it starts at the very top. Whenever they replace leadership (often) they just look for small dumb dictators that believe engineers are just resources. They don't ever have a clear idea of what to do with the product and shoot in all directions, because they are clueless. They are all fired after a few months and replaced with a new bunch of mediocre dumb dictators.
No career progression.
Pure chaos.
Pure marketing.