Top 37
Prep plan
Updated weekly · Last refresh Oct 17

Plum Software Engineer Interview Questions

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

37questions
~6htotal time
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1
CodingStart here. 22 questions · ~202 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 · ~55 min
VM vs Docker DeploymentMedium

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

dockerPlum
API Gateway vs Load BalancerMedium

Assesses your ability to distinguish gateway responsibilities from traffic distribution.

api gatewayPlum
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3
Behavioral & Leadership3 questions · ~28 min
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4
More topics6 questions · ~55 min
State Management TradeoffsEasy

Tests understanding of state management approaches and when to choose each for maintainability.

Communicationtechnical experiencePlum
System Design LeetCode-StyleHard

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

system designleetcodePlum
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
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The finish line: interview-readyComplete all 37 questions to finish this plan.