There are four stages in the interview process. The Codility test and technical interview are done simultaneously, so the deadline of the Codility test is 2 days before the interview. I applied on the website.

1. CV Screening
2. HR interview
3. Codility test
4. Technical interview

HR interview:

1. Why did you choose Rakuten Mobile?
2. Why did you apply for this position?
3. (Note: Junior engineer positions include roles such as data scientist, etc.) If you are accepted but assigned to a different position than expected, would you still accept the offer?
4. Can you speak Japanese?

Codility questions:

1. Similar to medium LeetCode: arithmetic slices.
2. Generating ascending order 2^p 3^q.