I applied online. The process took 6 months. I interviewed at Orange (Paris) in Oct 2016
Interview
Contact through mobile. Before organising a video call, the HR asked to me if I could start a stage with a "convention de stage" allowed by my University. After that, he organised the video call and he sent me a mail with all the details, included the link for dowloding a specific program used by Orange for interview (unfortunatelly during the interview, Orange program didn't work and I did something like a phone interview by computer)