DoorDash Software Engineer Interview Questions
Go Back1. If hired by Doordash, can you estimate what portion of your day will involve coding and other activities you will perform when not coding?
2. Walk me through your process for designing scalable applications.
3. Describe the process you use to create a program, from requirements definition to delivery.
4. How do you go about addressing errors in your code?
5. What process do you use to test and find bugs in an application you've developed?
6. How would you implement Dijkstra's Shortest Path using a programming language with which you are familiar?
7. How do you go about organizing CSS files, and why do you prefer this approach?
8. Which do you prefer - a micro-service approach or a monolithic app?
9. What do you look for or check when reviewing another team member's code?
10. How would you go about explaining cloud computing to someone at Doordash that doesn't have a technical background?
11. Doordash is very proud of their products and the people who develop them. In your opinion, what distinguishes a great software engineer from an average one?
12. Which design patterns do you use, and in what situations do you use them?
13. Please describe a stack and the two operations it performs.
14. What are the differences between blocking and non-blocking calls in the context of Node.js?
15. Doordash web developers are incorporating HTML5 in their most recent websites. Can you describe the functions of web workers in HTML5?
16. Can you define black box testing and white box testing and discuss the differences between them?
17. In your opinion, what is the difference between computer software and a computer program?
18. What do you feel are the critical principles of good software engineering?
19. Can you describe what you know about object-oriented programming?
20. Here at Doordash we prefer to develop software that will scale as we grow. What methodologies do you use to ensure that your program will scale?
21. What are the differences between an array and a stack?
22. Please describe responsive design and the difference between fixed and fluid layouts.
23. Can you describe Doordash's software development life cycle as you understand it?
24. Can you describe a tough software development problem you encountered in your last job and discuss how you solved it?
25. How would you accelerate the response time of a website you created for us here at Doordash?
26. Walk me through the steps to build a single page application with multiple sections using the programming framework in which you typically work.
27. Many Doordash Software Engineers prefer to program in Java. Can you describe how you would implement linear search in JavaScript?
28. What are some of the programming languages you are familiar with, and which ones do you prefer?
29. Here at Doordash, we have embraced Agile methodology. How experienced are you with the Agile software development process?
30. Here at Doordash we value work life balance and initiative. What personal software development projects have you worked on outside of work?