Hello Client I have years of experience in it field and working with iOS objective from 6 years and swift from 3 years
Listed are mine skrills Objective C ,Swift 4.0, Databases - Sqlite , Core Data,MySQL Audio/Video Calling using OpenTok REST / SOAP Api Push Notifications Singleton Pattern Object Oriented Programming Socket I/O Social applications feature Chat,Timelines Hands on Backend services creation in PHP. MVC architecture Apple map, Google Map Social integration (Facebook, Twitter, Google+, LinkedIn, Instagram) Auto layout,Size classes Troubleshooting and debugging Version Control Systems(Git and SVN) Xcode Real time applications technologies like Signal R, MQTT