iOS Developer Interview Questions
Can you talk me through some interesting code you wrote recently?
Suggested approach: Hopefully you can go straight to GitHub and pick an interesting project. If not, why not? Your projects don't need to be amazing, clever, or even popular, but if you literally have nothing to show you’re going to have a much harder job convincing companies to hire you.
Estimated difficulty: Easy
Watch me answer this question in detail
See the full list of iOS interview questions
Important notes
- There are over 150 interview questions in the system. Once you've read the question and come up with a suitable answer, try reading my suggested approach and see if it helps you add more detail.
- These questions are not designed to be hard; a good interviewer is more interested in generating discussion that lets your ability and interests shine through.
- If you answer a question with "yes" or "no" you've missed the point – interviewers prefer you to provide reasoning, explanation, or detail, so try to elaborate with examples!
- If you're looking for detailed technical questions about the language, you should try my Swift tests instead – there are multiple challenges that will work your brain hard.
- For a whole series of coding challenges, I wrote the perfect book for you: Swift Coding Challenges.
Related questions
- If you could have Apple add or improve one API, what would it be?
- How familiar are you with XCTest? Have you ever created UI tests?
- Have you ever filed bugs with Apple? Can you walk me through some?
- Do you have any favorite Swift newsletters or websites you read often?
- Have you ever used test- or business-driven development?
