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System Design
2 years ago
How would you architect a scalable newsfeed system for a platform like Facebook?
Machine Learning Engineer

Duolingo

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2 years ago
ML Knowledge
2 years ago
Could you explain the relevance of the ROC curve in machine learning?
Machine Learning Engineer

Duolingo

Marqeta Logo

Marqeta

Expedia Logo

Expedia

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2 years ago
ML Knowledge
2 years ago
Can you discuss a specific project where you utilized dimensionality reduction techniques to effectively manage and analyze complex data?
Machine Learning Engineer

Duolingo

Citrix Logo

Citrix

BetterUp Logo

BetterUp

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2 years ago
Coding
2 years ago
How would you implement Conway's Game of Life using Python?
Machine Learning Engineer

Duolingo

Agoda Logo

Agoda

GitLab Logo

GitLab

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2 years ago
ML Knowledge
2 years ago
Could you define what an ROC curve is and what is meant by AUC in predictive modeling?
Machine Learning Engineer

Duolingo

Comcast Logo

Comcast

Panasonic Logo

Panasonic

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2 years ago
Coding
2 years ago
How would you code a solution to ascertain the length of a sorted integer list interspersed with -1s indicating out-of-range entries, without default functions?
Machine Learning Engineer

Duolingo

Sprinklr Logo

Sprinklr

Pendo Logo

Pendo

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2 years ago
System Design
2 years ago
Design a system for managing a distributed workflow engine.
Machine Learning Engineer

Duolingo

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2 years ago
ML CaseML Knowledge
2 years ago
Estimate the value of Pi using Monte Carlo Algorithm
Machine Learning EngineerData Scientist

Duolingo

Benchling Logo

Benchling

Etsy Logo

Etsy

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2 years ago
ML Knowledge
2 years ago
When it comes to detecting anomalies, what role do statistical models play?
Machine Learning Engineer

Duolingo

Wealthfront Logo

Wealthfront

PagerDuty Logo

PagerDuty

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2 years ago
ML Knowledge
2 years ago
How do precision and recall differ from each other, and how can they help in assessing the effectiveness of machine learning models? What are some limitations of these metrics that you should be aware of?
Machine Learning Engineer

Duolingo

Yahoo Logo

Yahoo

Groupon Logo

Groupon

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2 years ago

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*All interview questions are submitted by recent Duolingo Machine Learning Engineer candidates, labelled and categorized by Prepfully, and then published after being verified by Machine Learning Engineers at Duolingo.

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