Pinterest Machine Learning Engineer Interview Questions (2026) - Exponent

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Pinterest Machine Learning Engineer (MLE) Interview Guide

Updated 2 days ago by Pinterest candidates

InterviewsInterview experiences19

Interview Questions

13

Trending Machine Learning Engineer interview questions at Pinterest

Asked at Pinterest, Meta • 2 years ago
Design a product recommendation system.
Machine Learning
System Design
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Machine Learning
System Design
Asked at Pinterest, Amazon • 7 months ago
Implement a k-nearest neighbors algorithm.
IDE
Easy
Coding
Machine Learning
14 answers I was asked this
Coding
Machine Learning
Asked at Pinterest, Meta • 4 months ago
Given a list of strings, find all strings that encode to the same value using a Caesar Cipher. (A Caesar Cipher rotates characters, e.g. in CC3: a->d, b->e, ..., z->c)
Data Structures & Algorithms
Coding
1 answer I was asked this
Data Structures & Algorithms
Coding
Asked at Pinterest • 2 years ago
Design spam detection on Pinterest.
System Design
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System Design
Asked at Pinterest, Capital One, Google + 1 more • 2 years ago
Tell me about a machine learning project you worked on.
Machine Learning
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Machine Learning
Asked at Pinterest • 2 years ago
Explain the differences between ReLU and Sigmoid.
Concept
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Concept
Asked at Pinterest • 2 years ago
Explain the differences between nonconvex and convex functions.
Concept
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Concept
Asked at Pinterest • 2 years ago
Why do you want to work at Pinterest?
Behavioral
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Behavioral
Asked at Pinterest • 2 years ago
For a dataset with a million data points, would you use a DNN or KNN? Why?
Concept
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Concept
Asked at Pinterest • 2 years ago
Explain data drifting.
Concept
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Concept

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