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Analytics Case
2 years ago
How would you judge and differentiate the search results obtained from two diverse algorithms?
Data Scientist
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DoorDash

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SeatGeek

Redfin Logo

Redfin

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2 years ago
SQL
2 years ago
Explain how you would perform a join between two tables, one with duplicate values.
Data Scientist
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DoorDash

Mastercard Logo

Mastercard

Sprinklr Logo

Sprinklr

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2 years ago
Coding
2 years ago
What is the most efficient way to calculate the dot product of two sparse matrices?
Data ScientistMachine Learning Engineer
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DoorDash

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Tesla

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Postmates

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2 years ago
Behavioral
2 years ago
Please tell me about a time when you struggled to meet a deadline.
Data ScientistData Science ManagerML Engineering ManagerEngineering Manager
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DoorDash

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Quizlet

Andela Logo

Andela

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2 years ago
ML Knowledge
2 years ago
What are some solutions to the problem of covariate imbalance in machine learning, and how do they contribute to better model outcomes?
Data Scientist
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DoorDash

Wish Logo

Wish

Teradata Logo

Teradata

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2 years ago
Behavioral
2 years ago
Describe a conflict situation you have experienced
Data ScientistFull Stack Software EngineerData AnalystFrontend Engineer
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DoorDash

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Palantir Technologies

Wealthfront Logo

Wealthfront

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2 years ago
Behavioral
2 years ago
Have you ever come up with or implemented a truly innovative idea? If so, how did you do it?
Data ScientistData Engineering ManagerEngineering ManagerUX Designer
DoorDash Logo

DoorDash

NetApp Logo

NetApp

Bill.com Logo

Bill.com

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2 years ago
ML Knowledge
2 years ago
What is collaborative filtering in ML?
Data Scientist
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DoorDash

NetSuite Logo

NetSuite

Sony Logo

Sony

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2 years ago
ML Knowledge
2 years ago
Can you mention a selection of optimization algorithms you're versed in? How would you go about optimizing a scenario with an extremely large variable set, say a million? How does the simplex method facilitate solving linear optimization problems?
Data Scientist
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DoorDash

Venmo Logo

Venmo

Expedia Logo

Expedia

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2 years ago
Data Visualization
2 years ago
How can you make multi-dimensional data comprehensible through visualization?
Data Scientist
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DoorDash

Sprout Social Logo

Sprout Social

SwiftKey Logo

SwiftKey

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2 years ago

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Statistics
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Metrics and Experimentation
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Data Scientist

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ML / Modeling
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Problem Solving
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DoorDash

Data Scientist

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SQL
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DoorDash

Data Scientist

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Resume Review
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DoorDash

Data Scientist

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Behavioral

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

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