Palo Alto Networks, Inc. Software Engineer Mock Interview

To help you prepare for a Software Engineer interview at Palo Alto Networks, here are 30 interview questions and answer examples.

Palo Alto Networks was written by and updated on September 1st, 2021. Learn more here.

Question 1 of 30

What do you feel are the critical principles of good software engineering?

How to Answer

This is a general question that asks you to characterize what makes a software program efficient and effective. Your ability to do this will help the interviewer at Palo Alto Networks understand your qualifications for the position. Your answer should incorporate both the requirements for the job, as stated in the job description, and your previous experience writing code. You should limit your answer to two or three important principles and anticipate a follow-up question from the interviewer.

Written by William Swansen on September 13th, 2021

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List of Palo Alto Networks Software Engineer Interview Questions & Answers

Click on the interview question to open our answer advice and answer examples

  • 1.

    What do you feel are the critical principles of good software engineering?

  • 2.

    Many of the projects we develop here at Palo Alto Networks start small, but grow quickly. What methodologies do you use to ensure that your program will scale?

  • 3.

    Can you describe what you know about object-oriented programming?

  • 4.

    The software development team here at Palo Alto Networks uses design patterns. Which design patterns do you use, and in what situations do you use them?

  • 5.

    In your opinion, what is the difference between computer software and a computer program?

  • 6.

    What are some of the programming languages you are familiar with, and which ones do you prefer?

  • 7.

    How would you go about explaining Palo Alto Networks' cloud computing environment to someone who doesn't have a technical background?

  • 8.

    Can you define black box testing and white box testing and discuss the differences between them?

  • 9.

    Palo Alto Networks web developers are incorporating HTML5 in their most recent websites. Can you describe the functions of web workers in HTML5?

  • 10.

    What are the differences between blocking and non-blocking calls in the context of Node.js?

  • 11.

    Please describe a stack and the two operations it performs.

  • 12.

    What are the differences between an array and a stack?

  • 13.

    Please describe responsive design and the difference between fixed and fluid layouts.

  • 14.

    Here at Palo Alto Networks , we have embraced Agile methodology. How experienced are you with the Agile software development process?

  • 15.

    Can you describe Palo Alto Networks' software development life cycle as you understand it?

  • 16.

    Palo Alto Networks 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?

  • 17.

    What do you look for or check when reviewing another team member's code?

  • 18.

    Can you describe a tough software development problem you encountered in your last job and discuss how you solved it?

  • 19.

    How would you accelerate the response time of a website you created for us here at Palo Alto Networks ?

  • 20.

    Which do you prefer - a micro-service approach or a monolithic app?

  • 21.

    Walk me through the steps to build a single page application with multiple sections using the programming framework in which you typically work.

  • 22.

    How do you go about organizing CSS files, and why do you prefer this approach?

  • 23.

    Many Palo Alto Networks Software Engineers prefer to program in Java. Can you describe how you would implement linear search in JavaScript?

  • 24.

    How would you implement Dijkstra's Shortest Path using a programming language with which you are familiar?

  • 25.

    What process do you use to test and find bugs in an application you've developed?

  • 26.

    How do you go about addressing errors in your code?

  • 27.

    Describe the process you use to create a program, from requirements definition to delivery.

  • 28.

    Walk me through your process for designing scalable applications.

  • 29.

    If hired by Palo Alto Networks, can you estimate what portion of your day will involve coding and other activities you will perform when not coding?

  • 30.

    Here at Palo Alto Networks, we value work life balance and initiative. What personal software development projects have you worked on outside of work?