Underdog Fantasy Mobile Engineer Interview Questions

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

17questions

~3htotal time

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CodingStart here. 8 questions · ~71 min

Explain how to prevent leaks, reduce retention, and manage object lifecycles in mobile apps.

Swift Structs vs ClassesEasy

Explain Swift structs vs classes, focusing on value vs reference semantics, memory behavior, and when each is the better design choice.

swiftbasicsoop

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Optimize Mobile App PerformanceMedium

Tests ability to diagnose and improve mobile performance using profiling, measurement, and targeted fixes.

Hash TablesArraysSorting

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Fetch and Display REST DataMedium

Tests practical API integration skills for mobile apps, including networking, parsing, and UI updates.

Hash TablesQueueStrings

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MVVM for Mobile AppsMedium

Tests understanding of MVVM and how it improves maintainability and testability in mobile apps.

Hash TablesArraysStrings

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Scalable Mobile ArchitectureHard

Tests system design judgment for scaling mobile architecture under high traffic and reliability requirements.

Hash TablesArraysGraphs

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Behavioral & Leadership8 questions · ~71 min

Choosing Between Competing TechnologiesMedium

Tests decision-making on technical trade-offs, stakeholder alignment, and clear communication under real delivery constraints.

Decision MakingStakeholder Managementtechnology selection

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The finish line: interview-readyComplete all 17 questions to finish this plan.