You're experience will vary widely team-by-team, but basically:
1. The foundation has yet to create a culture and work environment where people of different backgrounds can thrive. Right now, it favors workaholic types with American communication styles (e.g. speaking in bullets, very direct)
2. Pretty much constant change--the decision-making process for which is not always transparent or fair.
3. While the CEO and executive leadership team are trying to address this, managers are generally pretty weak. Don't expect a lot of time or support in terms of mentorship or support to grow your career.
4. Because there are few open positions, it can be hard to "move up"--especially from PO to SPO and SPO to DD.