Three rounds
Technical recruiter contacted me via LinkedIn, qset up a phone call, describes the job role and asks some technical questions, about my career path etc...
After, I met with the manager, for one hour, who was very friendly and explained to me altran vision for the next 5 years, we discussed about the job role, he asked some behavioral questions too which was no big deal.
Finally, I met with the technical lead for a more technical interview to evaluate my skills. the interview lasted for 1h and half, overall it was very friendly and easy.