Tribune Publishing Co. is seeking a Sr. iOS Engineer in Chicago, IL with the following requirements: Masters degree in Applied Computer Science or related field or foreign equivalent degree. 6 years of related experience. Required skills: Implement iOS software requirements using Swift 3, RxSwift, Objective-C leveraging Xcode and Apple Instruments (6 years); establish best-fit data structures and optimal algorithms by analyzing Big-O performance and using Apple Instruments tools (Apple Time Profiler, Apple Allocations Analyzer, etc.) (6 years); utilize best design patterns and principles while architecting and writing code – MVVM, MVC (6 years); integrate and deliver iOS builds, code reviews using Xcode, Jenkins, Fastlane and GitHub (2 years).