DoorDash Data Scientist Analytics & Experimentation Interview Questions
Practice 69 real Analytics & Experimentation interview questions for Data Scientist roles at DoorDash.
"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"
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"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
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"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."
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"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Diagnose Why Delivered Food Arrives Cold
Diagnose Why Delivered Food Arrives Cold A delivery marketplace is receiving reports that food arrives cold. Describe how you would determine where th...
Design and Evaluate a Refund Policy for Delayed Orders
Design and Evaluate a Refund Policy for Delayed Orders A delivery marketplace is considering automatically refunding customers whose orders are delaye...
Evaluate a Bike Dasher Program with a Controlled Experiment
Evaluate a Bike Dasher Program with a Controlled Experiment A delivery marketplace is considering a program that encourages some couriers to make deli...
Diagnose a Decline in Order Acceptance Rate
Diagnose a Decline in Order Acceptance Rate The order acceptance rate on a delivery marketplace has decreased. Describe how you would determine whethe...
Evaluate Courier-Selected Delivery Distance Limits
Evaluate Courier-Selected Delivery Distance Limits A delivery marketplace is considering allowing each courier to set a maximum distance for delivery ...
Diagnose a One-Day Drop in Successful Deliveries
Prompt On one specific day, the number of successful deliveries in a large metropolitan market drops sharply. The alert is about the count, not the su...
Reduce Cold-Food Incidents with Metrics and an Insulated-Bag Experiment
Reduce Cold-Food Incidents with Metrics and an Insulated-Bag Experiment A delivery marketplace wants to reduce the support costs, credits, and refunds...
Evaluate a Bike-Delivery Pilot with Marketplace Metrics
Evaluate a Bike-Delivery Pilot with Marketplace Metrics A delivery marketplace is considering a bike-based delivery option. Decide why the business mi...
Evaluate Biker Feature Success
DoorDash is considering launching Biker Mode, a feature for Dashers who deliver by bicycle. Biker Mode may help bicycle Dashers identify suitable shor...
Diagnose Cold-Food Deliveries and Make a Launch Decision
You are the data scientist for a food-delivery marketplace. Customers are reporting that some orders arrive cold. The product team proposes an interve...
Diagnose completed orders drop in Los Angeles
You are a data scientist at DoorDash supporting the consumer pricing team. The number of completed delivery orders in Los Angeles has dropped meaningf...
How would you test product changes?
This question evaluates experimental-design and analytics competencies—specifically A/B testing, causal inference, metric selection, segmentation, pow...
Design DoorDash Marketplace Experiments
This question evaluates a data scientist's competency in experiment and quasi-experiment design, causal inference, metric definition, and judgment abo...
How to test bike delivery?
You are a data scientist at a food-delivery marketplace. The company is considering launching a bicycle courier delivery option in selected cities. De...
Design an experiment for order batching
Experiment Design: Two-Order Batching Policy During Peak Hours Context DoorDash plans to test a dispatch policy that allows a dasher to pick up two ne...
How would you test a bike delivery option?
This question evaluates experimental design, causal inference, metrics definition, and marketplace analytics competencies in the context of launching ...
Design experiments for marketplace product changes
You are interviewing for a Data Scientist role at a food-delivery marketplace such as DoorDash. For each scenario below, explain how you would evaluat...
Design analytics for a new-market launch
DoorDash New-City Launch: Metrics, Guardrails, and Causal Rollout Design Task Define success metrics and guardrails for three phases of a new-city lau...
Evaluate a new ranking model
A food-delivery company serves homepage store recommendations with ranking model V1.1. A new model V2.0 adds several new features and may require a di...
Investigate LA Order Drop
A food delivery marketplace sees a meaningful decline in completed orders in the Los Angeles market. Explain how you would investigate the drop end to...