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Updated weekly · Last refresh Aug 30

Zulily Software Engineer Interview Questions

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

48questions
~7htotal time
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1
CodingStart here. 25 questions · ~220 min
Implement Binary Search AlgorithmEasy
Practice

Write a binary search function to find a target value in a sorted array.

SearchingZulily
Recursive Edge Case ImplementationMedium

Tests your ability to translate requirements into a correct recursive algorithm.

Recursionedge casesZulily
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2
System Design4 questions · ~35 min
Scalable Minute-by-Minute Sentiment FilterHard

Evaluates system design for streaming, aggregation, and near-real-time processing.

scalabilityZulily
Warehouse Supply Chain KPI DesignMedium

Assesses ability to translate operations into measurable metrics and data flows.

KPIsupply chainZulily
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3
Behavioral & Leadership15 questions · ~132 min
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4
More topics4 questions · ~35 min
SQL for Consecutive Theater SeatsMedium
Practice

Use gaps-and-islands logic to find the longest available consecutive seat block at the best rank.

sqlZulily
Handling Priority Mapping DeploymentHard

Evaluates execution planning under one-pass input and limited resources.

resource managementdeploymentZulily
MySQL and DP on Trees PracticeMedium

Assesses breadth across SQL, DP on trees, and string processing.

mysqlData StructuresZulily
Build a Product End to EndMedium

Evaluates your execution process from problem framing through delivery.

Roadmappingproduct developmentZulily

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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
Compare Monthly User Retention CohortsMedium
Practice
Practice drill

Calculate month-1 retention for January vs February signup cohorts using joins, date filtering, and aggregation.

Window FunctionsDate FunctionsAggregationsTrideumZulilyeBay
Monthly Sales Aggregation by Product CategoryEasy
Practice
Practice drill

Aggregate monthly sales totals by product category using JOINs, GROUP BY, and date formatting.

WalgreensRevLatentView Analytics
The finish line: interview-readyComplete all 48 questions plus 2 hands-on drills to finish this plan.