HI
I have been working in mobile world during 5 years.
I am familiar with follow things
Objective C,Swift 5, Xcode 11.1, Core Animation framework
Implement RESTful api using Alamofire, SwiftyJSON third parties
Google MAPs, Google Places API, Geo-coding using CoreLocation framework
Push notification using APNs or FCM
Payment gateway such as Stripe
Create the flexible and user-friendly UI using Storyboard and Autolayout
I am sure you would not hesitate to discuss with me if you read my suggestions.
Thanks