Dataford
Top 13
Prep plan
Updated weekly · Last refresh Aug 30

Pinterest Research Engineer Interview Questions

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

13questions
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1
CodingStart here. 3 questions · ~28 min
Build Data Structures Under Time PressureMedium
Practice

Build a trie to return Pinterest Search suggestions sharing a prefix in lexicographic order.

Data StructuresPinterest
Translate Math to Functional CodeMedium

Assesses ability to convert mathematical formulations into correct, testable code.

Pinterest
Optimize Code to Avoid OverheadMedium

Tests performance engineering skills and ability to reduce runtime overhead effectively.

Pinterest
2
Machine Learning7 questions · ~65 min
Gradient Descent and Vanishing GradientsHard

Tests understanding of optimization and practical fixes for training stability in deep models.

Deep LearningGradient DescentPinterest
Evaluating Model Drift in ProductionMedium

Evaluates monitoring approaches to detect and respond to distribution changes over time.

production environmentPinterest
Loss Function Trade-offsMedium

Assesses ability to choose and justify loss functions for recommendation objectives at scale.

loss functionsTrade-offsRecommendation SystemsPinterest
Debug ML Pipeline FailuresHard

Assesses diagnostic reasoning for ML pipeline issues tied to data distribution shifts.

DebuggingPinterest
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3
Behavioral & Leadership3 questions · ~28 min
Balance Innovation and DeadlinesMedium

Assesses prioritization and execution judgment when research goals meet delivery timelines.

time managementinnovationPinterest
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The finish line: interview-readyComplete all 13 questions to finish this plan.