Pros
Personal roadmap oriented company. You'll always get missions according to your next professional level and personal preferences.
Flat organization - no hierarchy which translates to family atmosphere, eye-level with everyone, always.
Knowledge transfer is being promoted. You're encouraged and given the time and resources to learn from others and teach them.
You're never alone. Every domain has their constant communication levels for professional support and collaboration, plus social integrations.
High quality administration department who's always happy to provide support and services of all kinds.
Cons
The company believes in open-source-software first and wherever it's available. This is not only the approach towards software but a life-ideology, and sometime it means opting out of the straight forward or convenient option. After a while of getting used to this, I got to realize this isn't a con but another opportunity to personally develop and break the comfort zone.