Dexcom Mobile Engineer Interview Questions

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

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CodingStart here. 7 questions · ~58 min

Explain how to use caching, batching, and lazy loading to improve app performance.

Swift vs Objective-C DifferencesEasy

Compare Swift and Objective-C across syntax, safety, interoperability, and runtime behavior.

RecursionHash TablesArrays

Dexcom

Optimizing an iOS Sample AppMedium

Tests your ability to reason about iOS performance optimization and practical coding tradeoffs.

optimization

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Behavioral & Leadership6 questions · ~50 min

Leading a High-Stakes Ambiguous ProjectMedium

Tests leadership through ambiguity, ownership, and prioritization when driving a difficult project with unclear requirements and real execution risk.

CommunicationLeadershipOwnership

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More topics4 questions · ~33 min

Tests product sense for user flows and usability for sensitive, first-time health experiences.

Core Android ConceptsEasy

Assesses your foundational mobile engineering knowledge for Android app components and navigation.

Dexcom

Privacy in Health AppsMedium

Tests knowledge of privacy principles and practical safeguards for sensitive health data.

Stakeholder ManagementCommunicationOwnership

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Real-Time Updates App DesignMedium

Tests product thinking and technical design for streaming updates and responsive UI.

User NeedsUse CasesProduct Vision

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