Pros
The WBG remains an important global institution and the place is staffed with many bright, dedicated individuals. They also have a great cafeteria.
Cons
The organization is extremely hierarchical, with a lot of time spent ensuring that you consult others within the organization. In addition, the opportunities for career advancement can be challenging, as there is little flexibility or mobility and you basically have to hope that a position opens above you. The short-term consultants have it the worst, being treated as disposable. This poor treatment of low-level staff is especially galling considering the generous salaries and plush treatment that high-level staff receive. Finally, the people in staff roles are so overworked themselves that they have a hard time advocating for others. Not a supportive work environment overall.