Don't be lured by their product and reputation. Poorest management and HR.
Pros
Product is great and has a strong reputation on European markets. Good international expansion and momentum as a company.
Cons
(SMB Department only) Management is awful. Low-profile mid-managers, inefficient and heavy processes that leave no room for flexibility, creativity, innovation. "Go-getter" attitude and proposing new ideas are seen more as a risk than as the right thing to do: you always have to bear in mind that appearing smarter than your boss will make him/her feel endangered and thus may hinder you from moving forward in your career. Managers rarely congratulate you, and emphasize on criticizing instead. There's a relation of fear to your boss and to hierarchy in general at Criteo. Managers are afraid of their manager(s), which makes communication and decision making very centralized in this department. Things are written in stone like nowhere else. Employees are asked to stick to their prerogative, to do no less, no more than their scope: this is called Fordism. SMB execs always brag about Criteo being a startup, but it couldn't be any further. Unfair and unethical decisions: not the best people are promoted. No transparency whatsoever on roadmap or just general department information. You barely know what future is made of (but an educated guess makes you realize that the future is elsewhere). SMB is just a cash-machine that attracts no attention from Paris HQ at all. You don't feel important to the company. No HR, low salary and inexistant perks, you're just another brick in the wall. Most boring office I've seen.