Pros
It is trite to say the best thing about a place is the people but, for Fivestars, in this case it is true. Some of my strongest professional and personal relationships came out of Fivestars. The team is smart and driven by aggressive goals so it is hard to get bored at any point. It is challenging but in a good way most of the time. The tech stack is pretty well developed but there is a lot of room for innovation and novel approaches to problems.
Cons
Quarterly OKRs don't give ideas enough time to grow. Sometimes it feels like it is just move fast for fast's sake. There's a tendency to write something down in a deck and assume it is agreed upon without brining in SMEs so someone is often left holding the bag on someone else's idea. There is a level of nepotism within the leadership ranks (hopefully this is less so these days).