In the past two years, many students applying to food delivery and local services companies have focused on DoorDash. Overall, their interview process is fairly standard, but the assessment is quite comprehensive: algorithms, system design, and real-world business scenarios are all covered.
这里整理一份比较完整的 SDE 面试流程复盘，给准备面试的同学参考一下大概节奏。programHelp 团队近年来带领学员参加了数百场面试，结合“一亩三分地”等平台和实战经验，为大家深度剖析 DoorDash 的面试流程与核心要点。
Interview Process Overview
- Resume screening: Highlight projects and technology stacks that are highly compatible with the position.
- Online Assessment (OA): Algorithmic and logic questions to verify basic skills.
- Telephone Interview (Phone Screen):
- Behavioral Interviewing: using the STAR principle to answer "Tell me about a time..."
- Technology & Coding: 1-2 LeetCode easy to medium difficulty questions.
- VO Interview (Virtual Onsite):
- Coding Interview: 2-3 rounds of algorithmic questions focusing on ideas, code quality and communication.
- System design: e.g. designing an order allocation or ETA system, with a focus on scalability and Trade-off.
- Behavioral Interviews / Hiring Manager Interviews: team fit and career planning.
high frequency questions
1. Coding Challenge
Accomplish findNearbyRestaurants(userLocation, allRestaurants, maxDistance, minRating):
- Filtering: distance ≤ maxDistance, rating ≥ minRating.
- Sort: ascending order by distance, then descending order by rating.
- Discussion: distance formulae, time/space complexity; indexing and pre-computation optimization when large amounts of data are available.
2. System Design
Designed DoorDash's ETA system:
- List the key factors that affect ETA (meal preparation time, delivery distance, real-time transportation, etc.).
- Draw the main components and data flows (ETA service, data collection, notification module).
- Discuss dynamic update mechanisms and notification of parties. Trade-offs between real-time, accuracy and system complexity.
3. Behavioral Question
"Tell us about one of the most complex technical challenges you encountered on a project and how you analyzed the solution? What were the takeaways and improvement points from the process?"
The STAR (Situation, Task, Action, Result) structure is recommended to highlight logic and reflection.
ProgramHelp Help you out.
- Resume Optimization & Career Planning
- Technical knowledge points combing and special training
- Mock Interviews & VO Interviews
- Written exam/assignment tutoring and proctoring
Whether it's DoorDash or one of the other big players, we can create a customized preparation program for you. We wish you all the best in your job search and a speedy landing!
