I had 2 rounds of Skype interviews which were one hour each. Ideally the time is spent with 5-10 minutes for introductions, 30 minutes doing an exercise often connected to Criteo’s business model. There are some technical questions but I think the objective was to evaluate how candidates think, if they can understand quickly the issue of a situation and suggest sensible solutions. The remaining time was for follow-up questions. Questions aren't hard but require looking beyond the first solution.

An HR call, then an online assessment, you need to finish 24 questions within 30 minutes, and score above 50%. Then an interview on brain teasers, about market sizing, but not typical market sizing questions