Top 50
Prep plan
Updated weekly · Last refresh Aug 30

Inc. Software Engineer Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 11 questions · ~99 min
K Most Frequent ElementsEasy
Practice

Return the k most frequent array values using frequency counting and a bounded min-heap.

Hash TablesArraysHeapInc.
Minimum Window Substring MatchHard
Practice

Use a sliding window and frequency counts to find the shortest substring containing all characters of t.

Hash TablesDynamic ProgrammingArraysInc.
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2
Execution3 questions · ~27 min
Rate Limiter for API AbuseMedium

Tests your ability to design defensive traffic controls with correctness and performance in mind.

Trade-offsRisk AssessmentScope ManagementInc.
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3
Pipelines3 questions · ~27 min
Large-Scale File ComparisonHard

Tests your ability to design scalable comparison workflows across varied storage systems.

Batch ProcessingData ModelingQualityInc.
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4
System Design10 questions · ~90 min
Distributed Resource SchedulerHard

Tests your system design skills for scheduling, fault tolerance, and scalability.

InfrastructureSchedulingfault toleranceInc.
Transaction System for MerchantsHard

Tests your ability to design consistent, high-throughput payment transaction architectures.

consistencyscalabilityInc.
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5
SQL & Data Manipulation10 questions + 3 drills · ~120 min
6
Security & Infrastructure10 questions · ~90 min
Google Maps and Unix NetstatMedium

Assesses your understanding of large-scale systems concepts and basic infrastructure tooling.

Inc.
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7
More topics3 questions · ~27 min
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The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.