People Software Engineer Interview Questions

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

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CodingStart here. 8 questions · ~80 min

Shift Decimal Place FunctionEasy

Practice

Shift a decimal point across an integer's digits using string manipulation, preserving exact decimal representation.

function implementation

People

Reverse Linked List In-PlaceEasy

Practice

Reverse a singly linked list in place by rewiring next pointers in one pass.

Linked ListsAlgorithms

People

Maximum Sum Contiguous SubarrayEasy

Practice

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

Dynamic ProgrammingArraysGreedy

People

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Behavioral & Leadership15 questions · ~149 min

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More topics5 questions · ~50 min

Multi-Region Replication StrategyHard

Tests understanding of replication models, consistency tradeoffs, and operational concerns.

Data QualityInfrastructureDependencies

People

Design Distributed Caching LayerHard

Tests system design tradeoffs for caching, consistency, and performance at scale.

Feature StoreFeature DriftRecommendation Systems

People

Java Polymorphism and Use CasesEasy

Tests Java OOP fundamentals and ability to connect concepts to real-world scenarios.

javabasicsoop

People

Rebuild Architecture ImprovementsMedium

Tests system thinking, tradeoff awareness, and ability to improve designs over time.

Decision MakingbackgroundOwnership

People

Ingest and Query Ad Metrics APIHard

Tests API design, data modeling, and pipeline thinking for real-time metrics.

Data QualityAPIsTools

People

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