Pros
Generally, the most important decision(PM/design/devs) is made in Cambridge, Boston. Berlin is a supporting office - you won't have any important project in Berlin. Communication between two different offices is very challenging, especially if your manager is in a different office. But don't worry, if you are good enough they will relocate you to Cambridge, Boston ;)
Cons
- some of the upper managers are very insensitive culturally/ethnically. very horrible. the worst part is they aware of it and don't care. -. Your coworker disappears out of sudden and you won't hear a good reason from the manager. (in Germany) and people don't know how to appreciate their team memeber. People just want to get credit along as much as possible to get promoted. -. The top-down working process. Sometimes, even C-level executive involves in the projects with their very personal reason. Managers are the decision maker, not you or user. and people are busy with their politics and making their boss happy. If you against your boss's opinion/decision with good reasons, be prepared to be fired. (I am not joking.) -. Communication/managing skill is very horrible. This company may used to be a good place to work, but lots of people are unhappy and leaving.
