What type of questions are asked at Google for an iOS Developer interview?

Interview questions for an iOS Developer position at Google can cover a range of technical and behavioral aspects. Google is known for its rigorous interview process, which often includes multiple rounds of interviews. Here are some types of questions that might be asked during a Google iOS Developer interview:

1. Coding and Algorithmic Questions:

   • Expect questions that assess your problem-solving skills, algorithmic thinking, and coding abilities. You might be asked to solve algorithmic problems on a whiteboard or using an online collaborative coding platform.

2. System Design:

   • Questions related to designing scalable and efficient systems. This may involve discussing how you would architect an iOS application, handle data flow, and ensure optimal performance.

3. iOS and Swift-Specific Questions:

   • In-depth technical questions related to iOS development and Swift programming language. This could include questions about memory management, concurrency, Grand Central Dispatch (GCD), Core Data, and other iOS frameworks.

4. Debugging and Problem-Solving:

   • Scenarios where you need to debug and fix issues in code. This could involve identifying and resolving bugs, optimizing code, or explaining the steps you would take to troubleshoot a particular problem.

5. iOS App Design and Architecture:

   • Questions related to designing the architecture of iOS applications. You might be asked about best practices in app design, how to structure code for maintainability, and your approach to building scalable applications.

6. Data Structures:

   • Questions on fundamental data structures such as arrays, linked lists, trees, and hash tables. You might be asked to choose appropriate data structures for specific scenarios.

7. Concurrency and Multithreading:

   • Given the importance of responsiveness in mobile applications, expect questions on managing concurrency and handling multithreading challenges in iOS development.

8. iOS Frameworks and APIs:

   • Questions about your knowledge of iOS frameworks and APIs. This could include questions on UIKit, Core Animation, Core Graphics, networking (using URLSession), and other relevant frameworks.

9. Behavioral Questions:

   • Questions that assess your soft skills, teamwork, and problem-solving approach. Google places importance on how candidates collaborate in a team and handle challenging situations.

10. Code Reviews and Collaboration:

    • Scenarios where you might be asked to review and provide feedback on code written by others or to collaboratively solve problems with interviewers.

Remember to prepare thoroughly by reviewing iOS development fundamentals, practicing coding problems, and researching Google's engineering culture. It's also beneficial to be familiar with Google's preferred development tools and practices. Additionally, expect questions that assess your ability to communicate effectively and collaborate within a team.