Senior Software Engineer - IOS Developer
Posted Sep 29, 2026 · We last checked this listing on Oct 6, 2026
Likely interview questions for this role
Written from this job description, not a generic list. Each one notes what the interviewer is really checking.
About your past
Tell me about a time you improved code quality in a codebase you didn't write.
What they are checking: Whether they contribute to continuous improvement without big risky rewrites.
How do you give code review feedback that helps a teammate grow?
What they are checking: Whether they contribute to a learning culture on an agile squad, as the posting asks.
What would you do
A crash spikes right after a release. How do you find and fix it?
What they are checking: Whether they use crash reporting, logs, and feature flags calmly and methodically.
A product owner wants a feature this sprint that you think needs more security review. What do you do?
What they are checking: Whether they raise risk openly and help find a safe path instead of silently cutting corners.
About the work
Walk me through how you'd structure a new feature in a large banking app, from architecture to tests.
What they are checking: Whether they use clear patterns like MVVM or similar and plan for testability from the start.
How do you decide between SwiftUI and UIKit for a new screen in an existing app?
What they are checking: Whether they weigh interoperability, team skill, and stability rather than following trends.
What do you do to protect sensitive data like account numbers and tokens in an iOS app?
What they are checking: Whether they know Keychain, secure storage, certificate pinning, and avoiding sensitive data in logs.
How do you handle concurrency in Swift, and what bugs have you seen from getting it wrong?
What they are checking: Whether they understand async/await, actors, and the main thread, and have debugged real race conditions.
How do you make sure your screens are accessible to customers using VoiceOver or large text?
What they are checking: Whether they treat accessibility as part of quality for a consumer banking app.
What's your approach to unit and UI testing in an iOS app?
What they are checking: Whether they write meaningful tests and understand where each kind of test pays off.
Practice this interview out loud.
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Practice this out loudThe full job description
As published by Fifth Third Bank.