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