Ventajas
Great environment if you are a self-starter and can think on the fly. Not micro-managed. Work with current technology. Flexible opportunities if you are willing to move around or work on different sites. Medical/dental benefits. Some 'perks' offered in the form of participating discounts via web retailers and participating merchants.
Desventajas
As an outsource company that gets paid on meeting client's SLA, peformance is largely based on meeting SLA-it's almost the sole yardstick for measuring everything. Engaging employees and making a positive work environment is largely lip service. Stress in managing workload is up to you. Little room for advancement. Pay is sub-par for the average when compared to market salary for similar positions.