Google Software Developer Mock Interview

To help you prepare for a Software Developer interview at Google, here are 30 interview questions and answer examples.

Google was written by and updated on September 22nd, 2021. Learn more here.

Question 1 of 30

If hired by Google, one of your tasks will be to debug your and other developer's code. As a software developer, explain the meaning of debugging and why it's used?

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List of Google Software Developer Interview Questions & Answers

  1. 1.

    If hired by Google, one of your tasks will be to debug your and other developer's code. As a software developer, explain the meaning of debugging and why it's used?

  2. 2.

    Describe how do you implement an insertion sort algorithm, and what's the easiest way to do it?

  3. 3.

    What is software scope, and what does the process involve?

  4. 4.

    Based on your experience, what's the best way to find a node that begins with two single link lists?

  5. 5.

    Prior to starting any software development project here at Google, we perform a feasibility study. What is your opinion on a feasibility study, and when should it be done?

  6. 6.

    Can you describe a challenging software development project you recently completed and the results?

  7. 7.

    Talk about the differences between structured English and Pseudo Code.

  8. 8.

    What are some of the software design patterns that you use, and in what situations do you use them?

  9. 9.

    What method do you use to find the missing number in an integer array of 1 to 100?

  10. 10.

    Here at Google, our developers work with Java quite a bit. Tell me how you find duplicate numbers in an array in Java containing multiple duplicates?

  11. 11.

    How do you find the starting node of a cycle if a link contains a cycle?

  12. 12.

    How do you approach implementing an LRU Cache in your favorite programming language?

  13. 13.

    What is your experience with implementing a Binary Search Algorithm without recursion?

  14. 14.

    Can you walk me through the meaning behind a Depth First Search Algorithm for a binary tree?

  15. 15.

    Google software developers use a variety of different sorting algorithms. Tell me the difference between a Comparison and Non-Comparison Sorting Algorithm?

  16. 16.

    Can you list for me the important categories of software development?

  17. 17.

    Describe at a high level what the software development life cycle process is.

  18. 18.

    What are verification and validation, and why are they important?

  19. 19.

    Do you have a preferred language that you like to write programming algorithms?

  20. 20.

    How would you define software configuration management?

  21. 21.

    Explain how duplicates are removed from an array without using a library.

  22. 22.

    As part of software development, were you involved with working on functional and non-functional requirements?

  23. 23.

    Making a comparison, how would you differentiate between Quality Assurance and Quality Control, as you believe it is implemented here at Google?

  24. 24.

    What software development process do you prefer to use?

  25. 25.

    I’ve heard applications referred to as both software and programs. Which terminology do you use, and how do these differ?

  26. 26.

    What are some of the types of development projects you have worked on in your past positions?

  27. 27.

    Are you familiar with Agile and Waterfall? Which of these software development methodologies do you prefer?

  28. 28.

    What are some of the QA processes you are familiar with and have worked with in the past?

  29. 29.

    What are some of the testing and debugging processes you use in your software development?

  30. 30.

    How much do you know about object-oriented programming?