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Updated weekly · Last refresh Aug 30

Etsy Research Scientist Interview Questions

The questions to prepare for a Etsy Research Scientist interview. Questions from real interview reports rank first. Updated weekly.

20questions
~3htotal time
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1
CodingStart here. 6 questions · ~54 min
Directed Graph Cycle DetectionMedium
Practice

Determine whether a directed graph contains a cycle using DFS or topological sorting.

RecursionGraphsEtsy
SQL CTR by Category and DemographicsMedium

Tests SQL proficiency for computing CTR and segmenting metrics by multiple dimensions.

aggregationbasicssqlEtsy
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2
Machine Learning4 questions · ~36 min
Bagging vs Boosting ExplainedMedium

Explain how bagging and boosting differ, and identify a representative algorithm for each ensemble method.

Ensemble Methodsmodel trainingSupervised LearningEtsy
Handling Class Imbalance in ClassificationMedium

Explain practical ways to train and evaluate a classifier when the target classes are highly imbalanced.

model trainingSupervised LearningClass ImbalanceEtsy
Custom Loss for Multi-Task LearningHard

Tests understanding of ML objectives and ability to craft losses for multi-task settings.

RegularizationDeep LearningGradient DescentEtsy
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3
System Design5 questions · ~45 min
Design a Personalized Product RecommenderHard

Design an end-to-end product recommendation system for a large e-commerce marketplace with strict latency and freshness needs.

Feature StoreFeature DriftModel ServingEtsy
Design Personalized Marketplace Search RankingHard

Design a personalized marketplace search ranker for 180M products at 420K peak QPS with tight latency and freshness constraints.

Trade-offsRoadmappingRisk AssessmentEtsy
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4
Behavioral & Leadership4 questions · ~36 min
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5
More topics1 question · ~9 min
Explain Transformer Self-AttentionHard

Explain how transformer self-attention works, including its role in sequence modeling and why it scales better than RNNs.

Neural NetworksLanguage ModelsDeep LearningEtsy
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