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Updated weekly · Last refresh Aug 30

Pocket Gems Software Engineer Interview Questions

The questions to prepare for a Pocket Gems Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

50questions
~11htotal time
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1
CodingStart here. 17 questions · ~223 min
Two Sum with TargetEasy
Practice

Use a hash map to find two array elements that sum to a target in O(n) time.

Hash TablesArraysStringsPocket Gems
Reverse a String in PythonEasy
Practice

Reverse a string in Python using character traversal and return the reversed result.

StringsfunctionspythonPocket Gems
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2
Security & Infrastructure7 questions · ~92 min
Mobile Game Authentication DesignMedium

Tests your security and architecture skills for user identity in a production mobile game.

InfrastructurePocket Gems
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3
Execution3 questions · ~39 min
Optimize Mobile Game PerformanceMedium

Tests your ability to apply performance techniques specific to mobile constraints and UX.

Trade-offsRisk AssessmentScope ManagementPocket Gems
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4
System Design16 questions · ~210 min
Scalable Multiplayer Game ArchitectureHard

Tests your system design skills for real-time multiplayer at Pocket Gems scale.

ML RankingFeature StoreRecommendation SystemsPocket Gems
Object-Oriented Design for HighwaysMedium

Evaluates your ability to model a real-world domain with OOP abstractions.

InfrastructurePocket Gems
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5
Behavioral & Leadership4 questions · ~52 min
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6
More topics3 questions · ~39 min
Real-Time Data SynchronizationHard

Tests your ability to design for consistency, latency, and correctness in multiplayer gameplay.

InfrastructureStream ProcessingOrchestrationPocket Gems
Format Dates as yyyy-mm-ddEasy

Evaluates your ability to transform and format date data correctly.

sqlPocket Gems
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
Basic SQL and String ReverseEasy
Practice
Practice drill

Reverse Costar property search strings with PostgreSQL and flag rows whose stored expected value does not match.

sql queriesstring manipulationCostar
SQL: Character CountEasy
Practice
Practice drill

Count a target character case-insensitively in a Discord message using PostgreSQL string functions.

Data Analysissql queriesstring manipulationDiscord
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.