My experience of my first interview with Rakuten Mobile: I submitted my open ES file and received an interview notification at the end of May. The interview was processed through Skype and took 10 minutes. All questions were in Japanese.
The following metrics were computed from 59 interview experiences for the Rakuten Software Engineer role in Japan.
Rakuten's interview process for their Software Engineer roles in Japan is fairly selective, failing a large portion of engineers who go through it.
Candidates reported having very good feelings for Rakuten's Software Engineer interview process in Japan.