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Updated weekly · Last refresh Oct 17

Whatnot Software Engineer Interview Questions

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

50questions
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1
System DesignStart here. 10 questions · ~94 min
SQL vs NoSQL for MarketplaceHard
Recently asked

Choose between SQL and NoSQL for Whatnot's marketplace by matching data access patterns, consistency needs, and scale.

database accessdistributed systemsarchitecture patternsWhatnot
Design a 7-Day Charity AppHard
Recently asked

Design an ML-powered charity donation app that recommends trustworthy campaigns during a seven-day operating window.

ML RankingCold StartFeature DriftWhatnot
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2
Coding21 questions · ~197 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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3
Execution9 questions · ~85 min
Scale System During CompetitionHard
Recently asked

Evaluates prioritization and scaling tradeoffs under high-pressure constraints.

scalingWhatnot
Build Whatnot 2.0 Execution PlanHard
Recently asked

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

product developmentWhatnot
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4
Security & Infrastructure4 questions · ~38 min
Kubernetes Ingress Deep DiveHard
Recently asked

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

kubernetesWhatnot
Safely Run User-Submitted CodeHard
Recently asked

Assesses your security and infrastructure approach to sandboxing and isolation.

SecurityWhatnot
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5
Behavioral & Leadership6 questions · ~56 min
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