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Companies / DoorDash

DoorDash interview questions

Explore questions associated with DoorDash. Review the source details, then use the workspace for code, notes, and diagrams.

88 questions in the library. A source association does not guarantee a future interview question.

Behavioral and leadership · Coding · Machine learning · ML system design · Practical engineering · System design

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88 questions

Showing 1–25

ML system designMedium
Design a Food Ordering Chatbot With Dietary Guardrails and Budget Fine-Tuning
Companies: DoorDash
ML System Design
Last reported Nov 2026
Open workspace
ML system designMedium
Design Restaurant Search Ranking: Features, Labels and Marketplace A/B Tests
Companies: DoorDash
ML System Design
Last reported Nov 2026
Open workspace
ML system designMedium
Real-Time Late-Delivery Prediction System With Feature Store and Model Registry
Companies: DoorDash
ML System Design
Last reported Nov 2026

Page 1 of 4

System designMedium

Design a Job Scheduler

Design a distributed job scheduler that can handle high-throughput job processing (10,000+ jobs per second), support both scheduled (cron-based) and ad-hoc job execution…

Companies: DoorDash, Airbnb, Apple, Autodesk +25

System Design

Last reported Nov 2026

CodingMediumLeetCode 210

Course Schedule II

Given numCourses and prerequisite pairs, return any ordering of courses that satisfies all prerequisites or an empty array if impossible — this is essentially computing…

Companies: DoorDash, Amazon, Anduril, Apple +11

Breadth-First Search · Depth-First Search · Graph Theory · Topological Sort

Last reported Nov 2026

Practical engineeringDifficulty not specified

Dasher Picker Using HashMap

Implement a system to maintain a list of dashers using a hash map data structure with functionality for random selection of dashers.

Companies: DoorDash

Last reported Nov 2026

System designDifficulty not specified

Design a Donations Website

Design a short-term (24-48 hour) donations website where users can contribute to pre-selected charities, with focus on payment processing, failure handling, and backup payment…

Companies: DoorDash, Lyft, Whatnot

Last reported Nov 2026

CodingDifficulty not specified

Design Dasher Payout Calculation System Based on Delivery Events

Design an API/class that calculates payout for a delivery driver (Dasher) based on delivery events from an external service. Each delivery has events with timestamps…

Companies: DoorDash

Last reported Nov 2026

Behavioral and leadershipDifficulty not specified

Tell me about a project of your choice and its challenges

Companies: DoorDash, Apple, Atlassian, Bloomberg +7

Last reported Nov 2026

Behavioral and leadershipDifficulty not specified

Tell me about a time you had a conflict with a coworker. How did you resolve it?

Companies: DoorDash, Adyen, Airbnb, Amazon +31

Last reported Nov 2026

CodingDifficulty not specified

Walls and Gates (Distance to Nearest Gate)

Given a 2D grid containing empty rooms/spaces (INF), walls/obstacles (-1), and gates (0), fill each empty room with the shortest distance to its nearest gate…

Companies: DoorDash, Microsoft, Spotify

Last reported Nov 2026

System designHard

Design a URL shortening service

Companies: DoorDash, Microsoft, OpenAI

API Design · Caching · System Design · System Design Fundamentals

Last reported Oct 2026

System designMedium

Design a rating and review system for individual food items

Companies: DoorDash

System Design · System Design Fundamentals

Last reported Oct 2026

System designMedium

Design a Driver Onboarding State Machine

Companies: DoorDash

System Design · System Design Fundamentals

Last reported Oct 2026

System designMedium

Design a Three-Day Donation Campaign with Third-Party Payments

Companies: DoorDash

System Design

Last reported Oct 2026

CodingDifficulty not specified

Round Robin Algorithm: Debugging and Testing

Debug and complete the implementation of a traffic router using the round robin algorithm. Identify and fix any bugs in the existing code, ensure all…

Companies: DoorDash, Brex, Paxos

Last reported Oct 2026

System designMedium

Handle a Short Payment Traffic Surge through a Third-Party Processor

Companies: DoorDash

System Design

Last reported Oct 2026

System designMedium

Design Food Reviews with a Reward Workflow

Companies: DoorDash

System Design · System Design Fundamentals

Last reported Oct 2026

System designHard

Design a Food Review System for a Delivery App, Focused on the Database Schema

Companies: DoorDash

System Design

Last reported Oct 2026

System designMedium

Handling Duplicate Upstream Order Records in Dasher Pay Calculation

Companies: DoorDash

System Design

Last reported Oct 2026

System designDifficulty not specified

Build a Master-Detail App with Store List and Menu Details

Build a master-detail mobile app that fetches store data from a REST endpoint and displays stores in a scrollable vertical list. Each store row shows…

Companies: DoorDash

Last reported Oct 2026

System designDifficulty not specified

Design a Metrics Aggregator

Design a metrics aggregation system that collects count-based metrics (like user signups, system errors, ad clicks) from services via a client library and displays them…

Companies: DoorDash, Amazon, Google, LinkedIn +10

Last reported Oct 2026

System designDifficulty not specified

Design an ETA Calculator for a Food Delivery App

Design an ETA calculator for a food delivery app that provides customers with accurate estimated delivery times for items in their cart, accounting for factors…

Companies: DoorDash

Last reported Oct 2026

CodingDifficulty not specified

Implement a REST Endpoint That Aggregates Data from Multiple Internal Services

Design and implement a GET /api/bootstrap REST endpoint that accepts a user_id and aggregates data from multiple internal services (Consumer, Address, Payments) into a single…

Companies: DoorDash

Last reported Oct 2026

System designDifficulty not specified

Design a Review App for Food Items

Design a food review system where users can rate and review individual food items from their orders, other users can upvote/downvote these reviews, and reviewers…

Companies: DoorDash

Last reported Sep 2026