Top 46
Prep plan
Updated weekly · Last refresh Aug 30

Instacart Mobile Engineer Interview Questions

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

46questions
~7htotal time
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1
CodingStart here. 25 questions · ~216 min
Debounced Search API HandlerMedium
Practice

Simulate debouncing by canceling pending search API calls and emitting only queries whose delay expires before the next input.

Hash TablesQueueStringsInstacart
Debug Memory Leaks and Race ConditionsMedium

Tests diagnostic skills and ability to reason about concurrency and memory behavior.

Hash TablesQueueGraphsInstacart
State Management for ScreenMedium

Tests ability to model UI states and transitions cleanly in a mobile feature.

Hash TablesArraysStringsInstacart
Debounced Search With Request CancellationHard

Tests async control flow, cancellation correctness, and UX responsiveness for search.

Hash TablesQueueSearchingInstacart
Asynchronous Data Loading With Safe UI UpdatesMedium

Tests async programming skills and safe UI state updates to avoid glitches and crashes.

Hash TablesQueueStringsInstacart
Debug Images and Rotation CrashEasy

Tests systematic debugging across UI lifecycle and image loading behavior.

Hash TablesArraysStringsInstacart
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2
Behavioral & Leadership20 questions · ~173 min
Owning a Production Mobile BugEasy

Tests ownership during a production incident, including rollback judgment, stakeholder communication, and disciplined root cause analysis.

CommunicationOwnershipRisk AssessmentInstacart
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3
More topics1 question · ~9 min
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