Rakuten Backend Engineer Interview Questions
The questions to prepare for a Rakuten Backend Engineer interview. Questions from real interview reports rank first. Updated daily.
Explain how to diagnose and optimize a slow SQL query using execution plans, indexing, and simpler query patterns.
RakutenExplain the four ACID properties and why they matter for reliable transaction processing in SQL systems.
RakutenReplace missing sales fields with defined defaults and return a consistently ordered dataset.
University of Minnesota
The Home Depot
NationwideFind duplicate customer profiles by grouping on identifying fields and returning only repeated records.
Adtalem Global Education
University of Southern California
Blue Cross Blue Shield of MichiganCalculate each user's 7-day rolling transaction average and daily spend rank using PostgreSQL window functions.
RakutenExplain how you prioritize work across multiple operational projects with competing deadlines, impact, and stakeholder pressure.
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Implement a modular top-k frequency algorithm that scales with input size and preserves deterministic tie ordering.
RakutenTests your understanding of consistency, correctness, and failure handling across services.
RakutenAssesses how you design for correctness under partial failures and concurrent updates.
RakutenAssesses your approach to protecting services from abuse and maintaining fair usage.
RakutenEvaluates your understanding of OOP and how you apply it in backend development.
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