This is a basic demo app that demonstrates the following:

• Loads and displays a (fake) CV from this endpoint: https://pastebin.com/raw/1qKFxMCZ
• Uses Codable for parsing JSON responses
• Uses the MVVM (Model-View-ViewModel) approach to demonstrate how view models & data sources can be unit tested
• Focuses mainly on testability and scalability (rather than design). For example, uses the "coordinator" pattern to extract navigation logic away from view controllers

• Open the Xcode project file > select "CVDemo" scheme & device > Run

• Open the Xcode project file > select "CVDemo" scheme & device > Test

• The code has been developed on Xcode 10.3 (Swift 5.0)
• No 3rd party frameworks are used for the demo. However, the "input-output" approach shown in the view models could be easily adapted to work with a reactive framework like ReactiveSwift, RxSwift or even Combine
• The API service layer is mocked in the unit tests to return dummy CV data (i.e. so no network call is made)