Pros
There is a strong esprit de corps at DataXu with a corresponding and an astonishingly low amount of ego in many of the teams. There is still much to be accomplished and very many opportunities for those who want to get involved. Many of the founders are still actively involved in the company. Top management is very approachable and sincerely wants to create an interesting and exciting environment with opportunities for growth but also one that has a good work/non-work balance. There are really smart people from all over the world working here - meaning that there are always many different and valid views on how to solve a problem; if you pay attention, you can learn a lot quickly.
Cons
The strategy and objectives are not always well-communicated to the rest of the organization. Sometimes new strategies and products are not known until they are complete. Salary is only on par with the industry. If you do not ask questions and insert yourself into situations and opportunities, you may feel like you are being left out. It's not intentional but it does happen. It can be easy to become burned out - you must speak up for yourself. A 'pro' is that this is not frowned upon at all.