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Prep plan
Updated weekly · Last refresh Oct 17

Rakuten Advertising Software Engineer Interview Questions

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

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1
CodingStart here. 8 questions · ~72 min
Reverse Linked ListEasy
Practice

Reverse a singly linked list iteratively and recursively in Python.

RecursionLinked ListsbasicsRakuten Advertising
Maximum Sum Contiguous SubarrayEasy
Practice

Use Kadane's algorithm to find the contiguous subarray with the largest sum in linear time.

Dynamic ProgrammingArraysGreedyRakuten Advertising
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2
Technical Fundamentals8 questions · ~72 min
C++ vs Java DifferencesMedium

Evaluates understanding of core language differences between C++ and Java.

javac++Rakuten Advertising
Concurrency and Race ConditionsMedium

Tests your ability to design safe concurrent updates and reasoning about race conditions.

technical experienceconcurrencyresource constraintsRakuten Advertising
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3
Execution7 questions · ~63 min
High-Throughput System DesignHard

Tests your system design methodology for scalability, performance, and reliability.

system designthroughputbottlenecksRakuten Advertising
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4
Behavioral & Leadership11 questions · ~99 min
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5
More topics5 questions · ~45 min
Optimizing Slow PostgreSQL Production QueriesHard

Explain how to diagnose slow PostgreSQL queries in production and choose effective indexing strategies.

Performance Tuningindexesquery optimizationRakuten Advertising
REST APIs and Microservice HealthMedium

Evaluates your API design rationale and your approach to observability for microservices.

monitoringapi designmicroservicesRakuten Advertising
Linux and Networking FundamentalsMedium

Assesses your understanding of Linux fundamentals and networking concepts for production systems.

NetworkinglinuxRakuten Advertising
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Refactoring a Slow QueryMedium
Practice
Practice drill

Refactor a slow Candid Health claims query using pre-aggregation, latest-event logic, and monthly payer metrics.

Performance Tuningdatabase optimizationCTEsCandid Health
Automate with Your Programming LanguageMedium
Practice
Practice drill

Count Citi workflow task types with more than one exception and show the latest review date.

Data ManipulationAutomationtechnical experienceCiti
Advanced Data Modeling for PerformanceHard
Practice
Practice drill

Calculate Citi business-unit performance variance against targets and identify the largest shortfalls.

business problemdata managementtechnical experienceCiti
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