1.Proficient with Swift
2.Experience with iOS frameworks such as Core Data, Core Animation, etc.
3.Experience with offline storage, threading, and performance tuning
4.Familiarity with RESTful APIs to connect iOS applications to back-end services
5.Knowledge of other web technologies and UI/UX standards
6.Understanding of Apple’s design principles and interface guidelines
7.Knowledge of low-level C-based libraries is preferred