API developer for iOS

We are looking for API developer to work on the design, development and maintenance API for iOS. The developer will work on the entire lifecycle right from concept stage until delivery and post-launch We are looking for API developer to work on the design, development and maintenance API for iOS. The developer will work on the entire lifecycle right from concept stage until delivery and post-launch support.1. To develop API for iOS app and macOS app, I need to communicate with PHP developers.2. Change the iOS app to be free...