Great place to work if you are in your 20's
The work environment is entrepreneurial and fast-paced. There are not a lot of politics so you can focus on doing your work vs. having to market your work all the time. The review/promotion process is very rigorous and fair. Compensation is very competitive. There are a lot of perks (free food, fun off sites, great holiday parties, etc.)
The downside is that everyone works really really hard and they never shut off. Client services work 60+ hours per week. Even when you aren't in client services, you suffer the lack of work life balance because you often are supporting those people.
Median age is less than 25.