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Updated weekly · Last refresh Aug 30

Plum Software Engineer Interview Questions

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

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1
CodingStart here. 22 questions · ~200 min
Merge Overlapping Sorted IntervalsMedium
Practice

Sort intervals by start time, then greedily merge overlaps into a non-overlapping result array.

intervalsSortingArray ManipulationPlum
Maximum Sum Contiguous SubarrayEasy
Practice

Use Kadane's algorithm to find the contiguous subarray with the largest sum in linear time.

Dynamic ProgrammingArraysGreedyPlum
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2
Security & Infrastructure6 questions · ~54 min
VM vs Docker DeploymentMedium

Evaluates your grasp of deployment models, isolation, and operational tradeoffs.

dockerPlum
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3
Behavioral & Leadership4 questions · ~36 min
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4
More topics5 questions · ~45 min
Real-Time Claims Dashboard ArchitectureHard

Tests system architecture skills for real-time data aggregation and integration with external APIs.

InfrastructureAPIsData ModelingPlum
Monolith to Microservices MigrationHard

Tests migration planning, risk management, and strategies to maintain availability during refactors.

Launch PlanningTrade-offsRisk AssessmentPlum
System Design LeetCode-StyleHard

Evaluates end-to-end system design skills including APIs, data modeling, and scalability.

system designleetcodePlum
Low-Latency Rate Limiting MiddlewareHard

Tests ability to design protective middleware with strong latency and correctness constraints.

InfrastructureAPIsQualityPlum
Scalable Multi-Channel NotificationsHard

Tests distributed system design for high-volume, multi-channel messaging reliability and scale.

Trade-offsExecutionRoadmappingPlum

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