Pros
There's not much to be said on the pros side. Spend 2 or 3 years at most for the experience, then leave asap for better pastures!
Cons
The main office of BNP in France manage other offices around the world like France used to manage its colonies, pure exploitations. They bring back most of the profits back to France where they distribute most of it in bonuses to the same people year after year. They offer low salaries, and bonuses are almost inexistant for back office employees. They will give a prorate bonus in the first year, but forget about getting on in subsequent years. Common practice is to find bogus excuses, and only high management gets a decent percentage, and the lack of employees is putting a lot of pressure on management. Subsequently, the good employees leave and regional management is left with underperformers that can't be fired since they are scarred the main office won't approve the replacement. The mismanagement will lead to fraud or major mistakes since there's not enough employees left in the back office to oversee everything.