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Walmart Labs Interview Questions

The questions to prepare for Walmart Labs interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

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1
CodingStart here. 4 questions · ~39 min
Longest Substring Without RepeatsMedium
Practice

Find the longest substring with all unique characters using a sliding window.

Hash TablesStringsTwo PointersWalmart Labs
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2
SQL & Data Manipulation5 questions · ~48 min
Top Underperforming Regions by ConversionMedium
Practice

Use a CTE, aggregation, and LEFT JOIN to find Walmart Labs regions with the lowest conversion rates last quarter.

Conversion Ratesql queryData AnalysisWalmart Labs
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3
Metrics5 questions · ~48 min
Investigate User Engagement DeclineMedium
Recently asked

Investigate a 15% engagement decline by decomposing the metric, isolating root causes, and proposing actions.

RetentionDiagnosisEngagement MetricsWalmart Labs
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4
Execution5 questions · ~48 min
Prioritize Work Under Tight DeadlinesEasy
Recently asked

Explain how you prioritize competing work under time pressure while making trade-offs and keeping stakeholders aligned.

Trade-offsRoadmappingScope ManagementWalmart Labs
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5
A/B Testing & Experimentation4 questions · ~39 min
Common Pitfalls in Experiment ResultsHard
Recently asked

Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.

PeekingNovelty EffectSample Ratio MismatchWalmart Labs
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6
Strategy5 questions · ~48 min
Pivoting Strategy From Customer SignalsMedium
Recently asked

Describe how you used market or customer data to change course, and how you made the new strategy credible and measurable.

EstimationCompetitive AnalysisGrowth StrategyWalmart Labs
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7
More topics22 questions · ~212 min
Interpreting P Values in TestingEasy
Recently asked

Explain what a p-value means in hypothesis testing and how it relates to statistical significance.

Hypothesis TestingStatistical SignificanceP-ValuesWalmart Labs
Define Launch Success MetricsMedium
Recently asked

Approach for choosing launch success metrics, including a north star, leading indicators, and clear success criteria.

Product-Market FitUser NeedsKPIWalmart Labs
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