01 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? SOFTWARE ENGINEER 02 Here at Square, we value work/life balance and initiative. What personal software development projects have you worked on outside of work? SOFTWARE ENGINEER 03 If hired by Square, can you estimate what portion of your day will involve coding and other activities you will perform when not coding? SOFTWARE ENGINEER 04 Walk me through your process for designing scalable applications. SOFTWARE ENGINEER 05 Describe the process you use to create a program from requirements definition to delivery. SOFTWARE ENGINEER 06 How do you go about addressing errors in your code? SOFTWARE ENGINEER 07 What process do you use to test and find bugs in an application you've developed? SOFTWARE ENGINEER 08 How would you implement Dijkstra's Shortest Path using a programming language with which you are familiar? SOFTWARE ENGINEER 09 Many Square Software Engineers prefer to program in Java. Can you describe how you would implement a linear search in JavaScript? SOFTWARE ENGINEER 10 How do you go about organizing CSS files, and why do you prefer this approach? SOFTWARE ENGINEER 11 Walk me through the steps to build a single page application with multiple sections using the programming framework in which you typically work. SOFTWARE ENGINEER 12 Which do you prefer - a micro-service approach or a monolithic app? SOFTWARE ENGINEER 13 How would you accelerate the response time of a website you created for us here at Square? SOFTWARE ENGINEER 14 Can you describe a tough software development problem you encountered in your last job and discuss how you solved it? SOFTWARE ENGINEER 15 What do you look for or check when reviewing another team member's code? SOFTWARE ENGINEER 16 What do you feel are the critical principles of good software engineering? SOFTWARE ENGINEER 17 Can you describe Square's software development life cycle as you understand it? SOFTWARE ENGINEER 18 Here at Square, we have embraced Agile methodology. How experienced are you with the Agile software development process? SOFTWARE ENGINEER 19 Please describe responsive design and the difference between fixed and fluid layouts. SOFTWARE ENGINEER 20 What are the differences between an array and a stack? SOFTWARE ENGINEER 21 Please describe a stack and the two operations it performs. SOFTWARE ENGINEER 22 What are the differences between blocking and non-blocking calls in the context of Node.js? SOFTWARE ENGINEER 23 Square web developers are incorporating HTML5 in their most recent websites. Can you describe the functions of web workers in HTML5? SOFTWARE ENGINEER 24 Can you define black box testing and white box testing and discuss the differences between them? SOFTWARE ENGINEER 25 What are some of the programming languages you are familiar with, and which ones do you prefer? SOFTWARE ENGINEER 26 How would you explain cloud computing to someone at Square who doesn't have a technical background? SOFTWARE ENGINEER 27 In your opinion, what is the difference between computer software and a computer program? SOFTWARE ENGINEER 28 Which design patterns do you use, and in what situations do you use them? SOFTWARE ENGINEER 29 Can you describe what you know about object-oriented programming? SOFTWARE ENGINEER 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? SOFTWARE ENGINEER