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Behavioral
9 months ago
How are you the most qualified candidate for this Data Scientist role?
Data Scientist

Duolingo

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9 months ago
ML Knowledge
10 months ago
List out some optimization algorithms you're aware of. How do you handle a million variables in optimization? How does simplex works?
Data Scientist

Duolingo

Venmo Logo

Venmo

Expedia Logo

Expedia

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10 months ago
ML Knowledge
10 months ago
What is the most effective way to optimize hyperparameters in a machine learning model? Can you explain the differences between using grid search CV and random search CV?
Data Scientist

Duolingo

Blind Logo

Blind

Autodesk Logo

Autodesk

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10 months ago
ML Knowledge
10 months ago
Could you provide a rundown of the differences between neural networks and support vector machines? What sorts of issues do they each handle most effectively?
Data Scientist

Duolingo

Infineon Logo

Infineon

SAP Concur Logo

SAP Concur

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10 months ago
Behavioral
10 months ago
Why have you decided to change your job? Why do you feel Duolingo is a good next step?
Data Scientist

Duolingo

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10 months ago
Analytics Case
10 months ago
Tell us how you would estimate how much fake news is there on Facebook. How would you estimate its impact?
Data Scientist

Duolingo

Wish Logo

Wish

Amazon Logo

Amazon

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10 months ago
Behavioral
a year ago
Describe a time when you made a decision that didn't work out. What did you learn from this?
Data ScientistData Science ManagerEngineering ManagerUX Designer

Duolingo

Trackmaven Logo

Trackmaven

Okta Logo

Okta

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a year ago
Behavioral
a year ago
How would you improve Duolingo if you were to get the Data Scientist job?
Data Scientist

Duolingo

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a year ago
Analytics Case
a year ago
What would you advise the product team to do if we are launching a new product but are seeing a decline in usage metrics? Would you continue with launching the product?
Data Scientist

Duolingo

Gusto Logo

Gusto

GoCardless Logo

GoCardless

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a year ago
Behavioral
a year ago
Let me know about the time you failed in your efforts to achieve something.
Data ScientistProduct ManagerBackend EngineerSoftware Engineer

Duolingo

Okta Logo

Okta

Stitch Fix Logo

Stitch Fix

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a year ago

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*All interview questions are submitted by recent Duolingo Data Scientist candidates, labelled and categorized by Prepfully, and then published after being verified by Data Scientists at Duolingo.

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