What approaches or methodologies have you applied in your previous professional activities?

In iOS development, I applied the following approaches and methodologies:

• MVC (Model-View-Controller) — a classic architecture for separating logic, interface, and data.
• MVVM (Model-View-ViewModel) — for cleaner separation and easier testing, often using RxSwift or Combine.
• Using Auto Layout for adaptive interfaces on different devices.
• Working with GCD (Grand Central Dispatch) and OperationQueue for organizing multithreading and asynchronous tasks.
• Unit testing with XCTest to improve code reliability.

For example, when implementing MVVM, I created a ViewModel that handled data and business logic, while the ViewController subscribed to changes via bindings or reactive streams.