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Rakuten Payment Software Engineer Interview Questions

The questions to prepare for a Rakuten Payment Software Engineer interview. Questions from real interview reports rank first. Updated daily.

50questions
~7htotal time
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1
ExecutionStart here. 7 questions · ~56 min
Your Strengths and WeaknessesEasy
Recently asked

Give a specific, self-aware account of your strengths and weaknesses, supported by relevant examples and improvement actions.

Trade-offsSuccess CriteriaExecutionRRakuten Payment
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2
System Design10 questions · ~80 min
Data Consistency in MicroservicesHard
Recently asked

Tests your consistency strategy across services, including transactions and eventual consistency.

distributed systemsconsistencymicroservicesRRakuten Payment
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3
Pipelines6 questions · ~48 min
Cloud Migration ApproachHard
Recently asked

Create a practical migration plan covering discovery, data transfer, validation, cutover, rollback, and post-migration monitoring.

data transferdata pipelinescloud environmentsRRakuten Payment
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4
Coding10 questions · ~80 min
API and OOP BasicsEasy
Recently asked

Evaluates foundational understanding of APIs and object-oriented programming concepts.

apioopRRakuten Payment
Hard Algorithmic ProblemHard
Recently asked

Assesses depth of algorithmic reasoning and performance under challenging coding constraints.

RRakuten Payment
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5
Security & Infrastructure9 questions · ~72 min
Thread vs ProcessMedium
Recently asked

Tests understanding of concurrency primitives and operating system concepts.

processesRRakuten Payment
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6
Technical Fundamentals3 questions · ~24 min
Understanding Data Structures and AlgorithmsMedium
Recently asked

Assesses your conceptual grasp of DSA and ability to explain it clearly.

Data StructuresAlgorithmsRRakuten Payment
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7
More topics5 questions · ~40 min
SQL Query and Coding RoundMedium
Recently asked

Assesses your ability to combine algorithmic problem-solving with practical SQL skills.

queriessqlRRakuten Payment
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
SQL Query to Remove Duplicate RowsMedium
Practice
Practice drill

Identify and delete duplicate payment transactions while retaining the row with the smallest payment ID.

deduplicationdata cleaningqueriesRRakuten Payment
SQL, APIs, and OOPMedium
Practice
Practice drill

Combine API request and SQL execution records to explain query integration and object-oriented application structure.

JoinsapisqlKaseya
SQL Data Structure ReviewHard
Practice
Practice drill

Audit PostgreSQL metadata for missing or invalid keys and tables with inefficient sequential-scan patterns.

database optimizationindexesData StructuresMercury
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.