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Durlston Partners Software Engineer Interview Questions

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

28questions
~4htotal time
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1
System DesignStart here. 9 questions · ~72 min
Logging and Monitoring for Financial AppsMedium

Evaluates observability design for incident detection, debugging, and performance monitoring.

monitoringDDurlston Partners
Risk-Checking Sub-Millisecond ServiceHard

Tests ability to design ultra-low-latency services with appropriate data, concurrency, and failure handling.

latencyarchitectureDDurlston Partners
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2
Coding8 questions · ~64 min
Cycle Detection in GraphsHard

Tests ability to design and implement correct graph algorithms for complex structures.

cycle detectionDDurlston Partners
High-Volume Market Data ProcessingHard

Assesses algorithmic thinking for efficient streaming ingestion and processing at scale.

Stream ProcessingDDurlston Partners
Sorting Complexity ExplanationMedium

Assesses ability to reason about algorithmic complexity and scalability.

SortingDDurlston Partners
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3
Security & Infrastructure8 questions · ~64 min
JVM Garbage Collection and LatencyMedium

Assesses understanding of JVM GC behavior and its implications for low-latency financial systems.

latencyjavaDDurlston Partners
Lock Contention OptimizationHard

Tests ability to improve concurrency performance through synchronization and workload design.

multithreadingoptimizationDDurlston Partners
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4
More topics3 questions · ~24 min
Memory Limits in BacktestingHard

Evaluates strategies to manage resource constraints while maintaining correctness in backtests.

DDurlston Partners
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