Top 21
Prep plan
Updated weekly · Last refresh Aug 30

Zulily Mobile Engineer Interview Questions

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

21questions
~3htotal time
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1
CodingStart here. 9 questions · ~84 min
Sorting Integers FunctionEasy
Practice

Sort an integer array in ascending order and return the sorted result.

ArraysSortingZulily
Closures in Swift ExplainedEasy

Explain what a closure is in Swift, how it captures values, and when to use it.

RecursionArraysZulily
Swift vs Objective-C DifferencesEasy

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

RecursionHash TablesArraysZulily
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2
Product Sense3 questions · ~28 min
Engagement Feature DesignMedium

Tests your ability to translate user needs into a feature with measurable impact.

Feature PrioritizationUser NeedsEngagement MetricsZulily
Native vs Hybrid TradeoffsMedium

Tests your product and engineering judgment around platform choice and long-term maintainability.

User SegmentsValue PropositionProduct VisionZulily
Designing a Mobile Purchase AppHard

Tests end-to-end product sense and architecture for a commerce-focused mobile app.

User NeedsValue PropositionUse CasesZulily

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3
Behavioral & Leadership8 questions · ~74 min
Leading an Ambiguous Data ProjectEasy

Tests leading through ambiguity by creating structure, prioritizing effectively, and driving cross-functional execution to a measurable result.

LeadershipOwnershipPrioritizationZulily
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4
More topics1 question · ~9 min
Diagnose Slow App Load TimesMedium

Tests debugging, measurement, and performance troubleshooting using data and logs.

KPIsLeading IndicatorsDiagnosisZulily
The finish line: interview-readyComplete all 21 questions to finish this plan.