Got reached out by a headhunter. There were 5 rounds of interviews in total: 3 technical rounds and 2 behavioral rounds with cross-site interviewers and the CTO.

The whole interviewing process was okay-ish, but somehow I was threatened by the headhunter in the final step.

The headhunter said something like, "The offer is in progress already, but if you can't promise to take the offer and onboard to Rakuten, I will decline the offer instead of you directly," even though at this stage, both the salary and job rank were not disclosed at all. That was very shocking. : )

LeetCode medium questions in the first 3 rounds.