Oleksandr O.

𝗜 𝗯𝘂𝗶𝗹𝗱 𝗮𝗽𝗽𝘀 𝘂𝘀𝗲𝗿𝘀 𝗲𝗻𝗷𝗼𝘆 𝗮𝗻𝗱 𝗸𝗲𝗲𝗽 𝘂𝘀𝗶𝗻𝗴. 𝗟𝗲𝘁’𝘀 𝗯𝘂𝗶𝗹𝗱 𝘆𝗼𝘂𝗿𝘀!🚀 ⚡ Client-oriented Senior iOS Engineer with 8 years and 50+ projects delivered ⚡ Top Rated Plus - Top 5% of talent on Upwork ⚡ Help turn a native iPhone App idea into a solid MVP and a stable App Store release ⚡ Apple-centric expertise - iOS, iPadOS, watchOS, macOS, Apple TV (tvOS), SwiftUI, UIKit, and iOS SWIFT ⚡ App Store success - Apple Xcode, App Store guidelines, TestFlight, submission, and release support 🚫 No short-term gigs, quick fixes, or rush jobs please 𝗖𝗟𝗜𝗖𝗞 𝗠𝗘𝗦𝗦𝗔𝗚𝗘 to get a detailed project review 📩 As a Mobile App Developer, I build native apps for startups and product teams. I have delivered 50+ iOS App projects: MVPs, iPhone App products, iPad app workflows, macOS Swift utilities, and App Store releases. I help build a new iOS App, improve an existing iOS Application, or handle iOS App Development from architecture to launch. As a Swift iOS Developer and Mobile App Developer, I cover iOS SWIFT, Swift UI, UIKit, backend integration, authentication, payments, security, performance, Mobile App Redesign, Mobile App Testing, and App Store Upload. 𝗛𝗢𝗪 𝗜 𝗖𝗔𝗡 𝗛𝗘𝗟𝗣 ✔️ Native Apple apps – iPhone & iPad Apps, iPad app features, Apple Watch apps, Apple TV Applications, and macOS Swift apps. Native iOS Developer and Swift iOS Developer delivery with Swift, SwiftUI, iOS SWIFT, Swift UI, UIKit, Cocoa Touch, Objective C, Objective-C, Apple Xcode, iOS SDK, iPadOS, watchOS, macOS, and Apple developer standards. ✔️ Architecture ready to scale – MVVM, VIPER, Clean Architecture, PostgreSQL, MySQL, Firebase, App Architecture, Database Architecture, iOS Developer Swift work, Swift iOS Developer tasks, iOS Engineer ownership, macOS Swift planning, and Senior iOS Developer / Senior iOS Engineer-level planning for stable iOS Development. ✔️ Backend connection without friction – 25+ production integrations as a Mobile App Developer: RESTful APIs, GraphQL, Alamofire, URLSession, AWS, Firebase, Networking, API Integrations, iOS Mobile App Development, and backend-driven logic for production apps. ✔️ Secure access and payments – Apple Sign-In, Firebase Authentication, OAuth, JWT, Authentication, Security, StoreKit, Apple Pay, Stripe, PayPal, In-App Purchases, SwiftUI Stripe screens, and payment logic for iOS SWIFT and Mobile App Development projects. ✔️ Apple SDK features for real products – Apple HealthKit, Core Motion, SiriKit, HomeKit, Bluetooth, Core ML, ARKit, RealityKit, Apple Motion, Apple Health & Fitness Apps, Apple Home & IoT Apps, AR & AI App Development, AI Mobile App Development, and native iOS App delivery with SwiftUI iOS and iOS SwiftUI. ✔️ Launch-ready App Store delivery – 20+ App Store releases via TestFlight, App Store guidelines, App Store Deployment, iOS App Marketing support, submission and release stability for Swift iOS Developer and Mobile App Developer projects. My experience includes 100K+ user consumer products, 50K+ active-user iPhone App products, iPad App Development, iPad app interfaces, macOS Swift automation, Mobile App Design, Mobile UI UX Designer collaboration, Apple Watch apps, Apple TV Applications, AVKit, AirPlay, iOS Swift Smartphone flows, SwiftUI Developer work, Mobile App Developer support, Swift iOS Developer ownership, Mobile App Developer delivery, and iOS App Developer ownership. 𝗜𝗢𝗦 𝗔𝗣𝗣𝗦 𝗗𝗘𝗟𝗜𝗩𝗘𝗥𝗘𝗗 ▪ Health tracking products ▪ Shopping, marketplace, and Real Estate experiences ▪ Media and TV apps ▪ Travel and eSIM products across 150+ countries ▪ Finance and payment flows ▪ Smart home and IoT control ▪ AI-Powered App, AI Development, and AI Mobile App Development projects with 200+ data points for AI, AR, and motion analysis apps ▪ Business tools and Data Entry workflows 𝗔𝗣𝗣𝗟𝗘 𝗕𝗔𝗖𝗞𝗘𝗡𝗗, 𝗖𝗟𝗢𝗨𝗗 & 𝗛𝗔𝗡𝗗𝗢𝗙𝗙 CloudKit, iCloud Sync, Firebase Firestore, REST API, GraphQL, macOS Swift, Mac automation, Desktop Application utilities, Application Installer flows, AppleScript, Shortcuts, workflow automation, Meta Pixel event handoff, Android, Android App Development, React Native, Flutter, Java, JavaScript, React, Node.js, Python, PHP, WordPress, and Mobile App Development handoff. 𝗥𝗲𝗹𝗮𝘁𝗲𝗱 𝗳𝗶𝘁: Full Stack iOS Developer, iOS Developer, iOS Swift Developer, iOS App Developer Swift, SwiftUI Designer, Swift Developer, Swift App Developer, Swift Mobile, Swift Designer, macOS developer, Kotlin Swift, React Native Mobile, React Native iOS, Flutter Mobile App Development, Mobile App Development FlutterFlow, Mobile Application Developer, Mobile App Developer, AI Mobile App Developer, Mobile Game Developer, iPhone App Development, Mobile App Development, Apple ARKit, macOS application. Sounds like a fit? 𝗠𝗘𝗦𝗦𝗔𝗚𝗘 𝗺𝗲 and get a consultation 📩