Pros
Privately owned firm which allows them to take a long-term, client-driven focus and not worry too much about meeting quarterly earnings, etc. It is a collaborative culture; where information sharing and idea generation is welcomed and encouraged. In most cases, it is very much a meritocracy. For the most part, you will find good people employed with a great work atmosphere. The firm offers a generous retirement plan contribution. A good work-life balance is achievable; and with the firm's global focus, there are opportunities to work in and with other regions.
Cons
They could do better about enabling employees to work from remote locations on a permanent basis. Some may find that it is a difficult place to advance ones career due to relatively flat organization structure and competition from external candidates for open roles.