Стек: Objective-C, Swift, CoreData, Realm, UIKit, CoreGraphics, CoreAnimation, Custom UI components, Manual & Auto Layout, HIG, UI/UX, CoreBluetooth, RESTful API, HTTP, WebSocket, TCP/UDP/ICMP, JSON, XML, HTML, CocoaPods/SPM, Git, Figma, Sketch, Photoshop, Illustrator