Great for people that want to learn and make an impact. If you aren't comfortable with change then this may not be the right fit. Not always a lot of direction and best for those who are self directed and motivated.
Working at vsource is great because of the autonomy and agility of the company. It still feels very much like a start-up where everyone has ownership of what they do and the ability to change directions as necessary without too much of a process required to get things done.
Desventajas
In the US, everyone is remote/work-from-home so far (which I love), but can be a challenge if you need a lot of development or crave constant personal interaction with your colleagues.