There are four rounds of interviews: online assessment, then group discussion on a topic about technology, then a online written test of two essays, and final panel interview that discussed your CV, your motivation and preference on which team you want to work in.
self-intro, telling about your experience in academia or work experience in internship or part time job
group discussion (5 people per group, with 2 HR team members)
waiting about 4-8 months, next round included written test
J'ai postulé en ligne. J'ai passé un entretien chez MTR
Entretien
the first part is an aptitude test, testing for your logic and reasoning and measures your cognitive capacity. second part is a group interview usually with a group of people with similar background, then is a written test to test your ability to present ideas clearly