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Prep plan
Updated weekly · Last refresh Oct 17

StockX Software Engineer Interview Questions

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

37questions
~5htotal time
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1
System DesignStart here. 5 questions · ~43 min
Design a Real-Time Bid AgentHard
Recently asked

Design an agentic ad bidding system that makes real-time bid adjustments at very high scale with strict latency and reliability needs.

Feature StoreRetrievalModel ServingStockX
Hierarchical Category Data StructureHard
Recently asked

Tests your ability to design efficient data structures for hierarchical storage and search.

StockX
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2
Coding10 questions · ~87 min
Android Kotlin CodingMedium
Recently asked

Tests your practical coding ability for Android/Kotlin development.

StockX
Zig-Zag Tree TraversalMedium
Recently asked

Tests your data structures and algorithm skills for tree traversal problems.

Data StructuresStockX
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3
Execution3 questions · ~26 min
Designing a REST APIMedium
Recently asked

Tests API design skills, resource modeling, and practical considerations for a production marketplace.

Trade-offsRoadmappingScope ManagementStockX
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4
Behavioral & Leadership15 questions · ~130 min
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5
More topics4 questions · ~35 min
High Availability and Fault ToleranceMedium
Recently asked

Tests resilience engineering practices and ability to design for failures.

InfrastructureToolsQualityStockX
Scaling Transaction ProcessingHard
Recently asked

Tests system scaling strategy, throughput bottlenecks, and architecture decisions for marketplace traffic.

Stream ProcessingBatch ProcessingOrchestrationStockX
Marketplace Database SchemaMedium
Recently asked

Tests data modeling skills for marketplace entities, relationships, and query needs.

JoinsData WranglingAggregationsStockX
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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
SQL and Data Tooling ProficiencyMedium
Practice
Practice drill

Aggregate project usage to identify frequently used data analysis tools and compare their hours and ratings.

analytics toolsToolsJoinsLimeadeLaSalle NetworkE15 Group
Handling Missing ValuesMedium
Practice
Practice drill

Create an auditable application dataset by applying explicit PostgreSQL rules for missing candidate, status, salary, and date values.

missing valuesdata cleaningnull handlingAircallathenahealthHays
The finish line: interview-readyComplete all 37 questions plus 3 hands-on drills to finish this plan.