It was a regular, ordinary interview, rather boring considering that it was headhunter behind first selection. It wasn't any surprise, like in HR book. Totally normal people, with normal questions and attitude. Nothing to be scared of. Quite formal, is better to wear a tie / office dress code Better to speak French, as is a french based company. I was contacted by a headhunter, pass initial screening and after that had Skype interview with one of France Manager. Is a good point for you to check also competitors.