Starting from Objective-C and now use Swift most of the time. Love the POP and succinct in Swift.
Use extensively Swift and Cocoa Touch frameworks
Familiar auto-layout with Constraints or UIStackView in Storyboard, xib or programmatically
Familiar 3rd Api like Alamofire, SwiftJSON, Kingfisher, Realm and so on
Git use in terminal and GUI(SourceTree) to work with colleagues
Use Cocoapods to manage 3rd api
Capable of survey and study to find solutions
Self-learning, self-motivated to learn iOS development, swift skills and design patterns