Collective Health Mobile Engineer Interview Questions

The questions to prepare for a Collective Health Mobile Engineer interview. Questions from real interview reports rank first. Updated daily.

23questions

~3htotal time

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CodingStart here. 5 questions · ~45 min

Find the first non-repeating character in a string using frequency counting and a second pass in O(n) time.

OOP Design and ImplementationHard

Tests your ability to translate requirements into an OOP design and implement it correctly under time constraints.

designoop

Collective Health

Stack Using QueuesMedium

Tests understanding of abstract data types and correct algorithm implementation.

Data Structures

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Technical Fundamentals5 questions · ~45 min

Tests UI architecture trade-offs and engineering judgment for maintainable iOS apps.

View Controller LifecycleMedium

Tests iOS UIKit fundamentals and correct lifecycle usage.

lifecycle

Collective Health

Swift Memory Management and Retain CyclesMedium

Tests Swift memory model knowledge and ability to prevent leaks in iOS apps.

memory managementswift

Collective Health

iOS Network Requests and ParsingMedium

Tests practical iOS networking, parsing, and reliability considerations.

data parsingNetworking

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Behavioral & Leadership13 questions · ~116 min

Challenging a Technical Decision RespectfullyMedium

Tests respectful disagreement, influence without authority, and ownership when challenging a technical decision.

Influence Without AuthorityConflict ResolutionCommunication

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The finish line: interview-readyComplete all 23 questions to finish this plan.