Pros
Peers; you'll feel like you're working with your favorite cousins and best friends. Compensation is better than average.
Cons
Leadership; most of the leaders were promoted during a time when tenure determined your role and not ability. What's more, most of them have never worked anywhere else to know that the way they do things is outdated and prevents process improvements. They often celebrate those that did the basic duties of their job and ignore those who deliver measurable value far beyond the expectations of their job descriptions. The company also traps employees by giving them these amazing RSU packages that vest twice yearly over four years. A tenured manager who leaves could easily forfeit over $500k in unvested stocks, so people stay beyond what mental health professionals consider healthy.