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𝗜 𝗯𝘂𝗶𝗹𝗱 𝗮𝗽𝗽𝘀 𝘂𝘀𝗲𝗿𝘀 𝗲𝗻𝗷𝗼𝘆. 𝗟𝗲𝘁’𝘀 𝗯𝘂𝗶𝗹𝗱 𝘆𝗼𝘂𝗿𝘀!🚀 ⚡ Senior iOS Engineer with 8 years and 50+ projects behind ⚡ 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 ❤️ Client-oriented 🚫 No short-term gigs, quick fixes, or rush jobs please 𝗖𝗟𝗜𝗖𝗞 𝗠𝗘𝗦𝗦𝗔𝗚𝗘 to get a detailed project review As a Mobile App Developer and iOS Developer, I help startups and product teams build a new iOS App, improve an existing iOS Application, or launch a full Mobile App Development project from idea to App Store: architecture, backend integration, authentication, payments, security, performance, TestFlight, and App Store submission. As an iOS Developer I’m focused on Mobile App Development, iOS App Development, and native Apple products for iOS, iPadOS, watchOS, macOS, and Apple TV (tvOS). I build iOS App products for iPhone & iPad Apps, Apple Watch apps, Apple TV Applications, and MacOS App Development using Swift, SwiftUI, UIKit, Objective C, Apple Xcode, iOS SDK, Cocoa Touch, Firebase, StoreKit, Core ML, ARKit, RealityKit, HealthKit, CloudKit, and App Store Deployment. YOU”LL GET WITH ME: ✔️ iOS & macOS – Expertise in Swift, SwiftUI, UIKit, Cocoa Touch, Objective C, and iOS SWIFT for iOS App, iPhone & iPad Apps, Apple Watch apps, Apple TV Applications (tvOS), and MacOS Mobile App Development. ✔️ App Architecture & Database Architecture – Expertise in MVVM, VIPER, Clean Architecture, PostgreSQL, MySQL, Firebase, iOS Developer Swift work, Swift iOS Developer and Senior iOS Developer tasks. ✔️ Networking & API Integrations – RESTful APIs, GraphQL, Alamofire, URLSession, AWS, Firebase, iOS Mobile App Development, and Mobile App Development. ✔️ Authentication & Security – Apple Sign-In, Firebase Authentication, OAuth, JWT, secure logins, iOS App security, and iOS SWIFT authentication flows. ✔️ In-App Purchases & Payments – StoreKit, Apple Pay, Stripe, PayPal, SwiftUI Stripe screens, and payment logic for iOS App and Mobile App Development. ✔️ Apple Health & Fitness Apps – Apple HealthKit, Core Motion, SiriKit Developers, activity tracking, iOS SwiftUI, SwiftUI iOS, and AI Mobile App Development. ✔️ AR & AI App Development – Core ML, ARKit, RealityKit, Apple Motion, AI Mobile App Developer experience, and intelligent iOS App experiences. ✔️ Apple Home & IoT Apps – HomeKit, Bluetooth, SiriKit, smart automation, iOS SWIFT, and native iOS Mobile App Developer delivery. ✔️ App Store Deployment & Optimization – TestFlight, App Store guidelines, Apple Xcode, iOS App Marketing support. DELIVERED HIGH-IMPACT APP s: ✅ Business & Productivity Apps – MacOS and iPad App Development for enterprise workflows, Mobile App Design support, and Mobile UI UX Designer collaboration. ✅ Health & Fitness Apps – Integrated Apple HealthKit & Core Motion for activity tracking, Apple Watch, SwiftUI Developer work, and iOS App Development. ✅ E-Commerce & Marketplace Apps – Secure shopping experiences with Apple Pay, In-App Purchases, StoreKit, Stripe, PayPal, and iOS App Developer ownership. ✅ Streaming & Media Apps – optimized playback, AVKit, AirPlay, Apple TV Applications, tvOS support, and iOS App performance. ✅ Finance & Payment Apps – Secure transactions with Stripe, PayPal, StoreKit, OAuth, JWT, and iOS SWIFT implementation. ✅ IoT & Smart Home Apps – HomeKit & Bluetooth integrations for smart devices, SiriKit, and native iOS App automation. ✅ AR, AI & Motion Apps – Core ML, ARKit, RealityKit, motion analysis, iOS Swift Smartphone flows, and SwiftUI interfaces. APPLE BACKEND & CLOUD SERVICEC: ✔️ CloudKit & iCloud Sync – Seamless Apple cloud storage integration for iOS App, iPadOS, watchOS, macOS, and Mobile App Development. ✔️ Firebase & AWS – Scalable backend architecture, real-time database solutions, Firebase Firestore, REST API, GraphQL, and iOS Developer backend integration. ✔️ macOS Automation & Scripting – AppleScript, Shortcuts, Workflow automation, macOS Swift, ✔️ AI & ML Integration – Core ML, Apple Motion, AI Mobile App Development, ARKit, RealityKit, and intelligent app experiences. My team’s expertise: Mobile App Development, Mobile App Developer, Mobile App Developer, Mobile App Developer Ukraine, iOS Developer, iOS App, iOS App Developer, Full Stack iOS Developer, iOS SWIFT, iOS Swift Developer, iOS App Developer Swift, SwiftUI, SwiftUI Designer, Swift App Developer, Swift Mobile, Swift Designer, Swift Developer, UIKit, Kotlin Swift, React Native Mobile, Node JS React Native Mobile Developer, Full Stack Developer, Web Developer, Flutter Developer, Flutter Mobile App Development, Mobile App Development FlutterFlow, Mobile Game Developer. Sounds like a fit? 𝗠𝗘𝗦𝗦𝗔𝗚𝗘 𝗺𝗲 and get expert consultation 📩 

💬 Get 𝗙𝗥𝗘𝗘 30-minute consultation! I’ll review your requirements, discuss the technical approach, and answer any questions. 𝟮𝟬+ 𝗮𝗽𝗽𝘀 launched, with 𝟭𝟬 𝘆𝗲𝗮𝗿𝘀 of experience building native iOS and macOS apps. 🤖 Using Codex and Claude Code to 𝗱𝗲𝗹𝗶𝘃𝗲𝗿 𝗳𝗮𝘀𝘁𝗲𝗿 and 𝗿𝗲𝗱𝘂𝗰𝗲 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗰𝗼𝘀𝘁𝘀, with every change reviewed to ensure 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻-𝗾𝘂𝗮𝗹𝗶𝘁𝘆 code. As an iOS Developer with 9+ years of experience in Native Mobile App Development, I specialize in building iOS applications built with Swift, SwiftUI, UIKit, and Objective-C. I work on production systems with a strong focus on performance, stability, maintainability, and delivering a polished user experience. 💡 Why clients work with me ✅ Native iOS Developer focused exclusively on Apple platforms ✅ 9+ years of hands-on iOS development experience ✅ Strong experience with large and legacy codebases ✅ Production-focused ✅ Clean, scalable, and maintainable architecture ✅ Fast iteration using AI-assisted development workflows ✅ Reliable communication and long-term support I’m comfortable working on both MVPs and long-term products, including apps with complex business logic, real-time features, offline-first architecture, CloudKit synchronization, and App Store releases. My expertise includes: ✔️ Building native iOS apps from scratch ✔️ Improving and maintaining existing apps ✔️ Fixing crashes, bugs, and unstable behavior ✔️ Refactoring legacy UIKit / Objective-C codebases ✔️ Migrating apps to SwiftUI ✔️ Performance optimization & debugging ✔️ API integrations, subscriptions & push notifications My technical expertise includes Swift, SwiftUI, UIKit, Objective-C, CoreData, SwiftData, CloudKit, StoreKit, Firebase, AWS, REST APIs, RevenueCat, AppsFlyer, real-time systems, subscriptions, and push notifications. Have an iOS app to build, improve, or fix? Let’s discuss your goals and how I can help.

👋 My name is Yuri — I'm Upwork's #1 iOS developer in Ukraine. I'm the founder and lead engineer at Helicon, an award-winning mobile development team. Together, we bring decades of experience in building software with a mission of delivering exceptional results at an impressive pace. Are you looking to create an app and need an expert developer who speaks fluent English? I specialize in: — iOS development (UIKit, SwiftUI) — macOS development (Cocoa, SwiftUI) — Vision Pro, Apple Watch, and Apple TV apps — Product management & expert advice for software projects. At Helicon, we are skilled in most of the well-known Swift frameworks as well as third-parties. See the full list below: — UI Frameworks: SwiftUI, UIKit, Combine, RxSwift, The Composable Architecture (TCA) — Backend & Auth SDKs: Firebase, AWS Amplify, Supabase Swift, Auth0, Appwrite — 3D Frameworks: RealityKit, ARKit, SceneKit, Model I/O, Quick Look — Networking Libraries: URLSession, Alamofire, Moya, Apollo iOS, gRPC — Image & Animation Libraries: Kingfisher, SDWebImage, Nuke, Lottie, AVFoundation — Data Persistence Libraries: SwiftData, Core Data, Realm, GRDB, KeychainAccess — Analytics & Monitoring Tools: Firebase Analytics, Mixpanel, Amplitude, Sentry, Branch — Payments & Subscription SDKs: StoreKit, RevenueCat, Adapty, Stripe, Paddle — Developer Tools & Dependency Managers: Swift Package Manager, CocoaPods, Carthage, SwiftLint, SnapKit — Device & Platform Frameworks: CoreLocation, MapKit, HealthKit, CoreBluetooth, WidgetKit I can also assist you with app distribution, marketing, and launch using: — App Store Connect — Apple Developer Platform — Apple Search Ads — Meta Ads Manager (f.k.a. Facebook Ads Manager) My team has first-hand expertise in applying AI models like Claude Opus and GPT-5 to the mobile development workflow, allowing us to offer a great turnaround time for your project without ever sacrificing the human touch. Advanced English proficiency is a requirement for every developer working at Helicon. We also communicate freely, Ukrainian, Polish, and Russian. Don’t hesitate to send me a quick message and we will go over your idea in detail over a video call or through Upwork chat!

30+ iOS apps live on the App Store. 10+ years of dedicated Apple development. 100% Job Success Score. I am not a generalist who "also does mobile." This is all I do. Most developers spread themselves thin across React Native, Flutter, Android, and whatever else is trending. I made a different choice: go all-in on Apple and become genuinely world-class at it. Every project I ship runs on pure Swift and SwiftUI — no cross-platform shortcuts, no compromises on performance, and zero sacrifices on native feel. What my Apple-exclusive focus means for your budget & timeline: ⚡ No learning curve: I know Xcode, App Store Connect, and TestFlight cold — you don't pay for my research. ⚡ Scalable architecture: Solid foundations from day one mean no expensive rewrites 6 months down the road. ⚡ Zero surprise rejections: I know the App Store Review Guidelines inside out. ⚡ Advanced Apple features done right: Smooth implementation of WidgetKit, Live Activities, iCloud sync, StoreKit 2, and Sign in with Apple. 🛠 Tech Stack I Use Every Day: Swift • SwiftUI • UIKit • CoreData • CloudKit • WidgetKit • StoreKit 2 • HealthKit • WatchKit • XCTest • Fastlane • TestFlight 📈 My Track Record on Upwork & Beyond: Top Rated badge with a 100% Job Success Score 10+ years of iOS experience (5+ years delivering top-tier projects on Upwork) 30+ shipped apps with 4.5★+ average ratings 10,000+ combined app downloads 🤝 I work best with: Founders and product teams who want a developer who cares about the product's success, not just closing Jira tickets. If native feel, flawless App Store performance, and clean Swift code matter to you — we’ll be a perfect fit. Let’s talk: Drop me a message with a brief overview of what you're building. I respond within a few hours and am happy to jump on a quick discovery call to see how I can help bring your app to life. Updated: 15.07.26

Senior iOS Developer with 14+ years building apps that ship — from zero-to-App Store MVPs for startups to scaling complex codebases for established products. 🚀 What I can help you with: ✅ New iOS app — Swift, SwiftUI, UIKit from scratch ✅ MVP development — concept to App Store submission ✅ Legacy app rescue — refactor Objective-C to Swift, fix crashes, improve performance ✅ Feature development — in-app purchases, push notifications, location, media, APIs ✅ Code review & architecture — MVVM, MVC, clean architecture ⚙️ Core technologies: 🔹 Swift · SwiftUI · UIKit · Objective-C (legacy support) 🔹 Firebase (Auth, Realtime DB, Push, Dynamic Links, Messaging) 🔹 CoreData · SQLite · RESTful API integration 🔹 AVFoundation · CoreAudio · MapKit · StoreKit 🔹 In-app purchases · Push notifications · GPS · Photo/Video/Audio 🔹 Git · CocoaPods · Swift Package Manager 🔹 App Store submission · TestFlight · deployment I've worked across fintech, social, media, and entertainment apps — including integrations with Facebook, Google, Instagram, Twitter, YouTube, and Vimeo. I also have cross-platform experience in Cocos2d-x (iOS & Android). I use AI-assisted development tools (Claude, Codex) to ship faster without cutting corners on code quality. 14 years means I've seen every edge case, debugged every crash type, and shipped under every kind of deadline. You get a developer who moves fast and doesn't disappear. 📩 Send me your project brief — I'll respond within 4 hours.

Hello! I'm a seasoned Mobile Software Architect and Developer with a decade-long journey in crafting mobile applications. My expertise spans across multiple languages including Swift, Objective-C, Kotlin, and Java, making me well-versed in the nuances of mobile app development. 🔰 Professional Experience: 🔰 With a rich background in developing a diverse range of applications for Apple's iOS ecosystem, I've mastered the intricacies of various iOS frameworks such as UIKit, CoreData, CoreLocation, MapKit, and many more. My journey includes transforming simple one-screen apps into complex, corporate-level applications. 🧑‍🔧️ Technical Expertise: 🧑‍🔧️ - Deep understanding of client-server communication using RESTful, JSON, XML, and RSS. - Proficient in Git, SVN, Github, Bitbucket, and JIRA for efficient project management. - Skilled in integrating social networking features with GPS, Maps, Chat, Events, and Media Sharing. - Expertise in photo/video editing & sharing, along with social media integration (Facebook, Twitter, Instagram, etc.). - Proficient in databases and storage solutions like CoreData and SQLite. - Knowledgeable in advanced iOS frameworks including AudioToolbox, AVFoundation, CoreAudio, and various animation and graphic frameworks. 🧑‍💼️ Management Skills: 🧑‍💼️ As a project manager, my experience equips me with exceptional communication and mediation skills, vital for team leadership and policy development. My interpersonal acumen helps in understanding team dynamics, ensuring seamless project execution. 🧑‍💻️ Areas of Specialization: 🧑‍💻️ - Advanced user interface and experience design. - Data synchronization and cloud integration, including iCloud and KeyChain. - In-depth knowledge of image processing and filtering techniques. - Proficiency in mobile analytics and ad integration, covering platforms like iAd, AdMob, Firebase and others. - Custom solutions for native mobile development 🧑‍🏫️ Educational Background: 🧑‍🏫️ Holding a Master's degree in Computer Systems and Networks from Zaporozhye Institute of Economics and Information Technologies, I have a strong foundation in various programming languages and technologies. 🧑‍🚀️ Personal Approach: 🧑‍🚀️ I'm a technology enthusiast who loves exploring new trends and challenges in the mobile app domain. I pride myself on my meticulous attention to detail and my ability to communicate effectively with both technical and non-technical stakeholders. I am always on the lookout for exciting and challenging projects. If you're seeking a reliable, experienced, and innovative mobile app developer or consultant, don't hesitate to reach out. Let's bring your vision to life!!!