Rakuten interview, decoded.

Two to four weeks is typical, and candidates report about five weeks on average, with the structure varying by region and level.

Rakuten publishes five Brand Concepts and five Principles for Success as Rakuten Shugi, and the final round is built on them. These are the company's own words.

• On a Mission (Empowerment): the stated mission is empowering individuals and companies to succeed in business and in life
• Behave Ethically (Integrity), and Prepare to Succeed (Professionalism): the means matter as much as the ends, and preparation is treated as a discipline
• Complete Commitment (Get Things Done) and Solidarity (Succeed as a Team): adjust the plan when circumstances change, never the goal, and do it together
• Always Improve, Always Advance: Rakuten's own framing is that Best Effort people console themselves when they fail and Get Things Done people do not
• Hypothesize, Practice, Validate, Shikumika: form a hypothesis, act, check, then build the result into a repeatable system
• Maximize Customer Satisfaction, and Speed!! Speed!! Speed!!: accomplish in one month what others take a year over

The behavioural questions are the ones candidates report from the manager and culture rounds. The technical themes come from the assessment and the interviews.

Most companies keep their values vague enough that a culture round is unpreparable. Rakuten publishes its own in full, names the round after them, and weights that round heavily, which turns the last conversation of the loop into the one you can prepare best. Rakuten Shugi has two halves: five Brand Concepts, which are what the company says it is for, and Five Principles for Success, which are how it says people should work. Below is each principle in Rakuten's own words and the story it is asking you for, plus the two questions that only come up at a Japanese company hiring from abroad.

• Always Improve, Always Advance: Rakuten's framing is blunt: Best Effort people are satisfied with the status quo and console themselves when they fail, while Get Things Done people are committed to the goal. Bring the project where the first approach failed and you changed it rather than explaining it. Say what you would have accepted as failure, and why you did not accept it.
• Passionately Professional: The company's own line is that professionals in any field reach the top through self-discipline and continuous improvement, and that it wins by working many times harder than competitors. Have the example of a skill you deliberately built outside the work that then changed the work.
• Hypothesize, Practice, Validate, Shikumika: The one candidates cannot fake, because it is a method rather than an attitude: form a hypothesis, act on it, check the result, then turn what worked into a system others follow. Shikumika is that last step, building it into the machinery. Tell the story in those four beats, with the number you checked against, and end on what the team does automatically now.
• Maximize Customer Satisfaction: Rakuten calls itself first and foremost a service company. Bring a decision where the customer's outcome cost you something: scope, elegance, a weekend. Engineers often answer this with a metric; answer it with a person.
• Speed!! Speed!! Speed!!: The principle says to accomplish in one month what others take a year over. The story is a thing you shipped far faster than normal and what you traded to do it, told with the trade named. A candidate who describes speed with no cost has not understood the principle.
• Englishnization, in practice: English has been the official internal language since 2010, which is why the loop runs in English and why engineers arrive from outside Japan. Expect to be asked how you feel about it, and about learning Japanese anyway: the honest answer, that meetings and documents are English while life outside the office is not, lands better than enthusiasm nobody believes.
• The ecosystem questions: Rakuten sells across e-commerce, banking, mobile and more, and candidates report being asked things like whether they would recommend Rakuten Mobile to friends and family. It reads as a joke and is not: it is a check on whether you would use what you build. Have a view on the products, including one thing you would change.

Prepare one story per principle and name the principle as you tell it, which is what the round is scoring. Read Rakuten's own philosophy page rather than a summary of it, because the wording is what interviewers quote. And know the technical bar you are pairing this with: the assessment is easy to medium, so losing on the culture round after passing the code is the common way this loop ends.

Levels.fyi for Rakuten software engineers in the Greater Tokyo Area, read on 23 September 2026. The band is narrow and sits below the Tokyo companies that pay most, Mercari among them, which is the honest trade for a loop with a lower technical bar and a company that will sponsor a visa and run your working day in English. Japanese packages are mostly cash, so compare the whole figure against local rent and tax rather than against a Bay Area total. Ask what the level maps to, what the allowances cover, and how often levels are reviewed.

1. 01Prepare one story per Principle for Success and name the principle as you tell it; that is what the final round grades.
2. 02Read Rakuten's own Rakuten Shugi page rather than a summary, because interviewers quote the wording.
3. 03Drill easy to medium problems and practise explaining the data structure underneath: candidates report failing on the explanation rather than the problem.
4. 04For a Java role, revise garbage collection, memory management and streams, since the internals come up.
5. 05Have a view on Rakuten's products, including one thing you would change, and expect a question about using them yourself.
6. 06Have an honest answer on Japanese: the policy is English at work, and nobody believes a promise to be fluent by spring.

This guide covers Rakuten's engineering and research hiring. For management and leadership roles the loop is similar but the bar shifts to people, delivery and strategy, so pair it with the leadership interview prep hub. The bar for your exact role comes from the role-by-role guides, and the prep that actually transfers is spoken, so run a mock interview before the real one.

• 01Rakuten Group, Rakuten Shugi: Brand Concepts and Five Principles for Successthe primary source for the culture round: the five Brand Concepts, the five Principles for Success in Rakuten's own words, including Always Improve Always Advance, Hypothesize Practice Validate Shikumika and Speed!! Speed!! Speed!!
• 02Rakuten Group, Corporate PhilosophyRakuten Shugi as the common foundation, and the mission of empowerment the Brand Concepts open with.
• 03TechPrep, Rakuten's interview process (2026)the three-to-four stage loop, the Codility assessment at easy to medium difficulty, the Java internals and low-level design questions, the system design prompts framed on Rakuten services, the fundamentals questions, and the Rakuten Shugi final round including the Rakuten Mobile and Englishnization questions.
• 04Levels.fyi, Rakuten software engineer, Greater Tokyo Areathe B to S band and the Tokyo median, read 23 September 2026.

Interview processes change. This reflects widely-reported and sourced conditions as of 2026 — confirm specifics with your recruiter, and treat it as a map rather than a guarantee.