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Okx Software Engineer Interview Questions

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

50questions
~7htotal time
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1
CodingStart here. 24 questions · ~203 min
Detect Cycles in GraphsMedium

Explain how to detect cycles in directed and undirected graphs using DFS, recursion state, and parent tracking.

RecursionSearchingGraphsOkx
Binary Tree or Graph TraversalMedium

Tests coding proficiency and algorithmic thinking for common graph and tree traversals.

TreesAlgorithmsGraphsOkx
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2
Execution5 questions · ~42 min
Distributed Rate Limiter for APIsHard

Tests system design for distributed throttling, correctness under concurrency, and operational considerations.

InfrastructureAPIsTrade-offsOkx
Latency Measurement and BottleneckingMedium

Tests observability skills and practical troubleshooting approach for distributed performance issues.

Trade-offsperformanceOkx
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3
SQL & Data Manipulation5 questions + 3 drills · ~72 min
SQL Aggregation and Index OptimizationHard

Tests SQL mastery and performance optimization skills using indexing and query planning concepts.

performanceindexesAggregationsOkx
7-Day Rolling Active UsersMedium
Practice
Practice drill

Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.

Window FunctionsDate FunctionsRunning TotalsMetaSpotifyMeta IT
SQL for Top Trading UsersMedium
Practice
Practice drill

Use aggregation and NTILE to identify the top 10% of OKX users by 30-day trading volume.

sql queryData AnalysisOkx
Analyzing Operations Bottlenecks with SQLHard
Practice
Practice drill

Use multi-level CTEs, joins, and LAG to identify Samsung regional inventory shortages and late deliveries.

JoinsperformanceAggregationsSamsung ElectronicsApeel Sciences
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4
System Design6 questions · ~51 min
Order Matching Engine DesignHard

Tests advanced system design for real-time matching, throughput, and latency constraints.

Feature StoreModel ServingRecommendation SystemsOkx
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5
Behavioral & Leadership6 questions · ~51 min
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6
More topics4 questions · ~34 min
Kafka Partition Ordering GuaranteesMedium

Tests understanding of Kafka semantics and how ordering works in distributed messaging systems.

Stream ProcessingDependenciesOkx
Java Memory Model and JVMMedium

Tests your understanding of Java concurrency semantics and JVM behavior.

concurrencyOkx
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