For iOS
Proficient with Swift / Objective-C and have published two or more iOS apps in the app store
Experience with iOS frameworks such as Core Data, Core Animation, Foundation, etc.
Experience with offline storage, threading, and performance tuning
Familiarity with RESTful APIs to connect iOS applications to back-end services
Experience with third-party libraries, APIs and a positive understanding of CocoaPods or Carthage
Familiarity with cloud message APIs, push notifications, and multiple payment gateway integrations such as In-APP Purchase, Apple pay, Stripe, Braintree, etc.
Proficient understanding of code versioning tools such as Git, Bitbucket.
Knowledge of other web technologies and UI/UX standards
Understanding of Appleâs design principles and interface guidelines