Swift Developer Interview Questions & Practice Simulator

Know both, but emphasize based on the job description. SwiftUI is the future direction and preferred for new projects, while UIKit remains essential for maintaining existing apps and complex customizations. Demonstrate comfort with both declarative and imperative approaches, and be prepared to discuss when each is appropriate for different use cases and team situations.

Design patterns are frequently discussed in Swift interviews. Master MVC, MVVM, and understand Coordinator patterns. Be ready to explain protocol-oriented programming, which is fundamental to Swift development. Interviewers want to see you can organize code maintainably and discuss tradeoffs between different architectural approaches for iOS applications.

Many interviews include live coding in Xcode or Swift Playgrounds. Practice building UI programmatically and with Interface Builder, implementing common features like table views and networking, and debugging. Some companies use online coding platforms, so be comfortable with Swift syntax without IDE autocomplete assistance during technical assessments.

Objective-C knowledge is valuable but rarely required for new positions. Understanding bridging between Swift and Objective-C helps when working with legacy codebases or certain system frameworks. Focus primarily on Swift, but being able to read and understand Objective-C code gives you an advantage when discussing interoperability or maintaining older applications.