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      Research Scientist Interview

      19 Jun 2018
      Anonymous interview candidate
      Singapore

      Other Research Scientist interview reviews for Rakuten

      Research Scientist Interview

      5 Jan 2026
      Anonymous interview candidate
      No offer
      Negative experience
      Difficult interview

      Application

      The process took 2 months. I interviewed at Rakuten

      Interview

      I had a first screening interview after ~3 weeks, and waited 4 weeks to pass the technical interview which has 2 sessions (each session 1h with a staff member). The way to schedule the interview was particularly not smooth and impractical. I had to exchange by emails to fix the dates and get confirmed.

      Interview questions [1]

      Question 1

      - Implement cross entropy without using defined function in torch - Implement a data loader of large JSON text database in pytorch - Questions about: difference between SFO and RL(HF), what consumes more of GPUs during the training of LLMs, and many other questions about parallel training The interviewers seemed not too knowledgeable about their questions and likely asked an LLM to generate them. The answer that we discussed was divergent and did not convince me. Both interviewers were very unfriendly and not collaborative during the interview.
      Answer question
      No offer
      Negative experience

      Application

      I applied online. The process took 3 weeks. I interviewed at Rakuten (Singapore)

      Interview

      Recruiter initiated contacted without application from me. Head of Singapore research unit did a phone interview for 30 minutes and talked about some of the applications they do in Singapore. Then they scheduled an hour of interview with presentation review by a two person panel including a senior data scientist who was knowledgable in traditional machine learning. The worst part of the interview was a the next presentation where the entire presentation was to be repeated to their overlords sitting in Japan over video conference. They barely understood anything I was talking since they didn't get much of the English, waited till I finished and asked their pre-prepared questions. The questions were redundant and unconnected to what I had presented. It also showed that they were completely out of touch with contemporary research in AI and ML. It showed that they were looking for some code monkeys to replicate stuff that was hot in America a few years back. I had heard of this a few years back. I was quite disinterested in the whole interaction although I talked a lot and it waned as the presentation dragged on for more than an hour. The recruiter then sent a generic "not selected for next round" (they didn't have a next round; this was the last presentation); super rude by any standards to send to a scientist interview candidate; even Google Research that gets umpteen applications send a better rejection letter to someone who did an onsite interview with them. A previous member of our lab from the same lab had attended their interview the last year. He got the offer offer but declined as they did not value his skills. They offered to pay something around SGD 36K (SI Valley value for a deep learning research scientist is at USD 150K base salary and upwards). I strongly discourage any scientist who values his skills to avoid interviewing with made up research institute.

      Interview questions [1]

      Question 1

      Present about your research and how it can be applied to Rakuten
      1 Answer
      3

      Research Scientist Interview

      14 Oct 2025
      Anonymous employee
      Singapore
      Accepted offer
      Neutral experience
      Average interview

      Application

      I interviewed at Rakuten (Singapore)

      Interview

      Long interview process, everything is automated by AI, so no HR to communicate with. First round with hiring manager - technical discussions, and design choices. Second round - coding in python loss function, linked list, sampling function, very algorithm related. Bootstraping techniques Final round - discussion with hiring manager and director

      Interview questions [1]

      Question 1

      Transformer architecture, loss function, numpy
      Answer question
      2

      Research Scientist Interview

      7 Aug 2025
      Anonymous interview candidate
      No offer
      Negative experience
      Average interview

      Application

      I applied online. I interviewed at Rakuten

      Interview

      Upon arriving for my interview, I was informed that HR had forgotten to include the interviewer in the meeting invite. They attributed this to a new HR system implemented six months earlier. While the issue was acknowledged, it impacted the overall experience.

      Interview questions [1]

      Question 1

      Basic info and salary expectation
      Answer question