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Whatnot Software Engineer Interview Questions

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

50questions
~7htotal time
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1
CodingStart here. 16 questions · ~140 min
Trie-Based AutocompleteMedium
Practice
Recently asked

Build a Trie to return the first lexicographic Whatnot search suggestions for a given prefix.

Data StructuresWhatnot
Palindrome With One DeletionMedium
Practice
Recently asked

Use two pointers to check whether a Navi identifier becomes a palindrome after at most one deletion.

StringsTwo PointersWhatnot
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2
System Design15 questions · ~131 min
SQL vs NoSQL for MarketplaceMedium

Assesses data modeling tradeoffs for a marketplace at Whatnot scale.

distributed systemsWhatnot
Design a 7-Day Charity AppHard

Evaluates your system design skills for a time-bounded donation workflow.

designWhatnot
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3
Security & Infrastructure5 questions · ~44 min
AWS Kubernetes Terraform QuestionsMedium

Assesses infrastructure knowledge and practical cloud deployment understanding.

kubernetesterraformawsWhatnot
Kubernetes Ingress Deep DiveHard

Assesses deep understanding of Kubernetes ingress routing and its role in production.

kubernetesWhatnot
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4
Execution10 questions · ~88 min
Scale System During CompetitionHard

Evaluates prioritization and scaling tradeoffs under high-pressure constraints.

scalingWhatnot
Build Whatnot 2.0 Execution PlanHard

Assesses execution planning, prioritization, and end-to-end delivery thinking.

product developmentWhatnot
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5
Behavioral & Leadership4 questions · ~35 min
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The finish line: interview-readyComplete all 50 questions to finish this plan.