Machine Learning Engineer Interview Questions

6,180 machine learning engineer interview questions shared by candidates

What is the difference between supervised and unsupervised learning? What is overfitting, and how can you prevent it? What is the purpose of splitting a dataset into training, validation, and test sets? How do you evaluate a classification model? Name some common metrics.
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Machine Learning Engineer Intern

Interviewed at Telecom Egypt

3.4
Jun 29, 2026

What is the difference between supervised and unsupervised learning? What is overfitting, and how can you prevent it? What is the purpose of splitting a dataset into training, validation, and test sets? How do you evaluate a classification model? Name some common metrics.

1. Computer Science questions - sorting, searching, data structure, binary tree. Actual code writing and walkthrough. How to optimize. Big O notations. Efficiency is always a key component here. 2. Machine learning and deep learning questions. Everything from supervised to unsupervised learning. What are the linear classifiers? Explain how CNN works, random forest, recurrent neural network. Clustering. Nearest neighbors. I think we gone through all the topics in machine learning. 3. System design. How to search efficiently. Explain previous experience or projects implemented etc.
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Machine Learning Engineer

Interviewed at Shopee

3.6
May 25, 2019

1. Computer Science questions - sorting, searching, data structure, binary tree. Actual code writing and walkthrough. How to optimize. Big O notations. Efficiency is always a key component here. 2. Machine learning and deep learning questions. Everything from supervised to unsupervised learning. What are the linear classifiers? Explain how CNN works, random forest, recurrent neural network. Clustering. Nearest neighbors. I think we gone through all the topics in machine learning. 3. System design. How to search efficiently. Explain previous experience or projects implemented etc.

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