Vantaggi
They allow telecommuting, but I felt this was abused by many of the younger employees. Employees get a chance to work with many different types of clients as well as engaging with them directly. If you're into tech, latest technology can be tried and used, since it's small and nimble teams.
Svantaggi
Employees are overworked, with Project Managers breathing down their necks 24/7. This is not a good thing and can leave employees feeling overwhelmed. There are a lot of managers and directors for a company so small. Those at that level do not feel the pain of the others and just add to the chaos, not help it and lack empathy. There's also a good amount of favoritism at the top and a cult-like, groupthink feeling at times, which is also odd.