Pros
Slalom is fantastic if you are great at self promotion. The horizontal organizational structure requires you to find ways to differentiate yourself through things other than title. This is a huge 'Pro' depending on your personality and drive. The focus on people is also very, very real. Slalom recognizes us as their greatest asset and reminds everyone of this focus on a very regular basis. Great office events. Did I mention the people? The people are great.
Cons
A majority of the client work is focused on roles that would otherwise be considered staff augmentation work. While I understand the importance of maintaining a semblance of the staff augmentation business model (for reasons of blending out variability in revenue, etc.), the associated work may not be what new hires are sold on.