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Coding
2 years ago
Can you devise an algorithm for determining the maximal sum of any subarray of size k from a given array of integers?
Machine Learning Engineer
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Duolingo

Roku Logo

Roku

Datadog Logo

Datadog

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2 years ago
ML Knowledge
3 years ago
Can you explain the consequences of overfitting and underfitting in real-world situations? Could you provide some examples that demonstrate when either of these might happen?
Machine Learning Engineer
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Duolingo

Fitbit Logo

Fitbit

Zillow Logo

Zillow

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3 years ago
System Design
3 years ago
How would you approach designing a load balancer that supports various balancing algorithms and health checks?
Machine Learning Engineer
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Duolingo

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3 years ago
System Design
3 years ago
Build a warehouse management system to track inventory in real-time.
Machine Learning Engineer
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Duolingo

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3 years ago
ML Knowledge
3 years ago
Could you provide some specific applications of Time Series Forecasting in the real world?
Machine Learning Engineer
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Duolingo

Faire Logo

Faire

Amadeus Logo

Amadeus

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3 years ago
Coding
3 years ago
Your task is to find all the triplets in a given array whose sum is equal to a target value.
Machine Learning Engineer
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Duolingo

TikTok Logo

TikTok

Meetup Logo

Meetup

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3 years ago
System Design
3 years ago
Design a distributed file system.
Machine Learning Engineer
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Duolingo

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3 years ago
ML Knowledge
3 years ago
Can you distinguish between the k-means and KNN techniques?
Machine Learning Engineer
Duolingo Logo

Duolingo

Postmates Logo

Postmates

Novartis Logo

Novartis

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3 years ago
ML Knowledge
3 years ago
What role does the assumption of error play in ensuring accurate linear regression models, and why is it critical to consider?
Machine Learning Engineer
Duolingo Logo

Duolingo

Niantic Logo

Niantic

ThoughtWorks Logo

ThoughtWorks

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3 years ago
ML Knowledge
3 years ago
In what ways do the K-means algorithm and the Expectation-Maximization (EM) algorithm differ?
Machine Learning Engineer
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Duolingo

ZocDoc Logo

ZocDoc

Audible Logo

Audible

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3 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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