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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 weekly.

40questions
~6htotal time
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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
Execution7 questions · ~63 min
Distributed Caching StrategyHard

Tests your skills in caching design, consistency considerations, and performance optimization.

performancecachingarchitectureRakuten Advertising
Scalable Tracking API DesignHard

Tests your system design skills for high-throughput event ingestion and reliability in ad-tech.

Technical FluencythroughputRoadmappingRakuten Advertising
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3
System Design3 questions · ~27 min
Photo Gallery and Edit DistanceHard

Tests practical UI design thinking and algorithmic reasoning for string edit checks.

database designRakuten Advertising
API Design for Backend SystemsMedium

Evaluates your ability to design usable, maintainable APIs with clear contracts.

api designRakuten Advertising
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4
Behavioral & Leadership20 questions · ~179 min
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5
More topics2 questions · ~18 min
Optimizing Slow PostgreSQL Production QueriesHard

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

Performance Tuningindexesquery optimizationRakuten 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
Pivot Lucid Campaign Performance by MonthMedium
Practice
Practice drill

Use joins, a CTE, CASE expressions, and monthly pivoting to compare Lucid campaign performance across channels.

pivot tablesnull handlingData WranglingLucid Motors
Unify Campaign Performance SourcesMedium
Practice
Practice drill

Use CTEs, joins, aggregations, and CASE logic to combine Salesforce, Marketo, and Google Analytics into one monthly campaign report.

Data WranglingperformanceReconciliationPalo Alto Networks
Supplier Cost Variance Trend AnalysisHard
Practice
Practice drill

Use joins, a CTE, and date functions to find monthly supplier cost variance and on-time delivery trends.

financial dataData WranglingperformanceBae Systems Usa
The finish line: interview-readyComplete all 40 questions plus 3 hands-on drills to finish this plan.