I’m Tushar Vijayvargiya, a Senior iOS Developer with 5+ years of experience building production-ready mobile and web products across e-commerce, enterprise, NFC, food ordering, utilities, social commerce, and personal safety domains. I have shipped 10+ production apps, including 8+ App Store products, using Swift, Objective-C, UIKit, SwiftUI, MVVM, Firebase, REST APIs, MapKit, CoreNFC, Vision, StoreKit, payment integrations, push notifications, and third-party SDKs. Along with iOS development, I also build full-stack web products using React, Next.js, TypeScript, Tailwind CSS, PocketBase, and payment gateway integrations. I can help with: iOS app development from idea to App Store release Existing app improvements, bug fixing, and performance optimization UIKit to SwiftUI migration and app modernization Firebase, maps, payments, NFC, barcode/QR scanning, and API integrations TestFlight, App Store submission, crash debugging, and release support Full-stack web apps using React and Next.js My focus is on clean architecture, stable UX, scalable code, and reliable delivery. Whether you need a new iOS app, production support, or a full-stack web product built end-to-end, I can help turn your idea into a polished, launch-ready product.

Developing iOS apps for too many years. Still love each OS release and looking forward what they have to come out with next time! Apple fan, how not surprising this may be. iOS skills include but not limited to: - Swift 5 / Objective-C - iOS SDK, Xcode - UI: UIKit, WatchKit, SwiftUI - Design Patterns: MVC+C, MVP+R, MVVM+C, VIPER, Clean Swift, Modular Clean Architecture - Reactive Frameworks: Combine, RXSwift - Dependency Managers: Cocoapods, SwiftPackageManager, Carthage - Dependency Injection: Swinject, Custom DI - Network: REST API, GraphQL, Alamofire, Moya, SwiftWebSocket, SocketIO, URLSession - Integration with existing social networks: Facebook, Twitter, Google - Media: AVFoundation, AVKit - Animations: UIKit, CoreAnimation, Lottie - Image Processing: CoreImage, CoreGraphics - Payment systems: In App Purchases, Apple Pay, Stripe, Square, PayPal, Liqpay, Swish - Databases: SQLite, CoreData, Realm, CloudKit - Multithreading: GCD, Swift Concurrency - BLE 4.0, 5.0 - CI/CD: Fastlane, AppCenter, GitLab, GitHub - Calendars: Google, Apple, CalendarKit - Notifications: UserNotifications, Firebase Cloud Messaging, OneSignal - Code generation: Swiftgen, Apollo - Version Control System: GitHub, GitLab, Bitbucket - Design resources: Zeplin, Figma - Task managers: Jira, Zenhub, Trello - Apple account: App Provisioning, AppStore Connect - Mobile advertisement: AdMob, IronSource, Unity, AppLovin - Other OS: watchOS, tvOS - Other services and SDKs: Firebase, AppCenter, Braintree, Branch, Maps (MapBox, Google, Apple), Mobile Bank ID, Google Analytics, Crashlytics, Test Flight etc. iOS apps (iPhone, iPad) apps (phone and tablet) of any complexity or style (material style, flat style): - delivery and ordering systems related applications - logistics mobile applications - marketplace apps - video and chat applications, WebRTC / VoIP, socket connection - booking mobile apps - online TV applications - educational applications - fitness applications - medicine applications - health applications - applications for online stores - cleaning services - and whatever you want - you tell it - I do it

10+ years Experienced Mobile App Developer | iOS Developer | Android App | Swift | Kotlin | React Native App Developer | Flutter App Developer | Javascript | Typescript | Figma | Mobile App Design ✅ 1889+ Hours ✅ $40k+ Earned in Upwork ✅ 90%+ Job Success Score ✅ 99% Client Recommendation Rate ✅ 90% Client Retention Rate ✅ 10+ years industry experience in Mobile App Developer ✅ Fluent English ✅ iOS (Swift) | Android (Kotlin) | React Native | AWS | Firebase ✅ Full Stack Mobile Application Developer Hello 👋 and Welcome! I am a 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 who can handle all aspects of mobile app development. I am having 10+ years of experience in iOS & Android mobile applications development and backend APIs development. I can believe in delivering the best possible solution that can be implemented in your business strategies and give you a state-of-the-art app experience to beat your competitors. I also understand the importance of creating highly readable and easily maintainable source code. I did many projects with excellent results. ​ 🌟 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐒𝐤𝐢𝐥𝐥𝐬 ★ iOS App Development (Swift Language) ★ Android App Development (Kotlin Language) ★ React Native App Development ★ BLE and iBeacon Technology ★ APIs:- Google Map, Google Places APIs. ★ Social Media Authentication: Facebook, Google, Twitter, Instagram, and Flickr ★ Payment Gateway Integration: Paypal, Stripe, Apple Pay, and In-App Purchase ★ Firebase:- Authentication, Database, Firestore DataBase, Ad-Mob, FCM, Cloud Messaging, Crashlytics, Analytics. ★ AWS (Amazon Web Services):- EC2 Instance, Cognito, S3, SNS, Lambda, Dynamo DB​, API Console, Cloud Formation. 🌟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐢𝐧 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐓𝐨𝐨𝐥𝐬 ★ 𝐓𝐨𝐨𝐥𝐬: JIRA, Asana, Basecamp, Smartsheet, Instabug, Wrike ★ 𝐑𝐞𝐩𝐨𝐬𝐢𝐭𝐨𝐫𝐢𝐞𝐬: Github, GitLab, BitBucket, AWS CodeCommit ★ 𝐕𝐞𝐫𝐬𝐢𝐨𝐧 𝐂𝐨𝐧𝐭𝐫𝐨𝐥 𝐒𝐲𝐬𝐭𝐞𝐦: Git, SVN, Mercurial, and CVS ★ 𝐂𝐈/𝐂𝐃 𝐏𝐢𝐩𝐞𝐥𝐢𝐧𝐞: Bitrise 🌟 𝐌𝐲 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 ★ Chatting/Messaging iOS App ★ e-Commerce iOS/Android App ★ Event management iOS App ★ Business management iOS App ★ Enterprise MDM iOS App ★ Pill Reminder iOS/Android App ★ QRCode App ★ Image processing App ★ BLE and iBeacon tech App ★ Restaurant, Places, Event booking and Live Tracking App ★ Greeting App​ ★ Dating App​ 🚀 Want to discuss your project? Just hit the green 𝐈𝐧𝐯𝐢𝐭𝐞 𝐭𝐨 𝐉𝐨𝐛 button, and let's start! Thanks!

👋 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!

Senior iOS Engineer with 10+ years of experience building high-quality apps, fixing critical performance issues, and shipping features end-to-end. I specialize in jumping into existing codebases, diagnosing what’s wrong fast, and delivering clean, maintainable solutions without slowing your team down. I’ve led development on large-scale consumer apps, including high-traffic retail and e-commerce systems, and I’m extremely comfortable with modern Swift, SwiftUI, UIKit, concurrency, Combine, and architectural patterns (MVVM-C, modularization, dependency injection, etc.). What I’m great at: 🔹 Building new features from scratch 🔹 Fixing crashes, optimizing performance, and improving stability 🔹 Cleaning up messy or legacy UIKit code 🔹 Refactoring for modularity and long-term maintainability 🔹 Rapid MVP builds for startups 🔹 Quick bug fixes, triage, and App Store compliance issues I work fast, communicate clearly, and deliver work that holds up long after the project ends. If you need a senior engineer who can ship, not just talk about architecture — I can help. Hourly Rate: $95–$120 (depending on scope and urgency)

Senior iOS Developer with 9+ years building high-performance, scalable apps trusted by 15M+ users. I turn ideas into polished App Store products using Swift, SwiftUI, UIKit, and Objective-C — clean code, smooth UX, and on-time delivery. I specialize in the full iOS lifecycle: architecture, development, optimization, and launch. Clients hire me to ship features fast without sacrificing quality, fix performance bottlenecks others can't crack, and build maintainable codebases that scale. With 3 years of Android (Kotlin/Java) experience, I bring a cross-platform perspective that makes collaboration across mobile teams seamless. What I deliver: ⭐ Native iOS apps from prototype to App Store launch — Swift & Objective-C ⭐ Modern UI with SwiftUI, UIKit, Storyboard & XIB, following Apple's Human Interface Guidelines ⭐ Scalable architecture — MVVM, VIPER, Clean Architecture ⭐ Robust networking & data — URLSession, Alamofire, CoreData, Realm ⭐ Smooth concurrency with GCD, Combine & OperationQueue ⭐ Performance tuning via Xcode Instruments — faster launches, lower memory, fewer crashes ⭐ CI/CD pipelines with Fastlane, plus APNs & Firebase analytics integration Why clients choose me: I write clean, maintainable code and communicate clearly throughout the project. Whether you need a single feature, a performance audit, or a full build from scratch, I deliver work that's reliable, well-documented, and ready to scale. Tools I work with daily: Xcode, Figma, Charles Proxy, Postman, GitHub, Bitbucket, GitLab, Jira, Trello, ClickUp, Slack. Available for short-term features or full app development. Let's bring your iOS app to life — with performance, polish, and purpose. 📩 Message me with your project details and I'll respond within 24 hours.

📱 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 · 𝟭𝟬𝟬% 𝗝𝗦𝗦 · 𝟳𝟬+ 𝗮𝗽𝗽𝘀 · 𝟱 𝘆𝗿𝘀 · 𝗹𝗶𝗳𝗲𝘁𝗶𝗺𝗲 𝘄𝗮𝗿𝗿𝗮𝗻𝘁𝘆 𝗼𝗻 𝗲𝘃𝗲𝗿𝘆 𝗮𝗽𝗽 𝗜 𝗱𝗲𝗹𝗶𝘃𝗲𝗿 Clients come to me when the app needs to work - not just launch. Whatever it takes: complex state management, real-time sync, API integration, HIPAA flows, wearables, in-app purchases, AI features. I've shipped all of it. Every line still mine to support. 👉 𝗖𝗹𝗶𝗰𝗸 𝗛𝗶𝗿𝗲 𝗼𝗿 𝗜𝗻𝘃𝗶𝘁𝗲 to work with a React Native Developer and iOS Developer who owns the product, not just the sprint. 🎯 𝗪𝗛𝗔𝗧 𝗬𝗢𝗨 𝗚𝗘𝗧 ✔️ As a React Native Developer and iOS Developer with 70+ shipped apps - complex state, real-time sync, third-party APIs, HIPAA-sensitive data flows, wearable integration. Not a prototype - a product that holds in production. ✔️ As a Mobile App Development React Native specialist - one TypeScript codebase, iOS and Android, App Store and Play Market. Firebase, Redux, push notifications, subscriptions. 40–60% faster launch than split native teams. ✔️ As a Mobile App Developer and React Native Developer for long builds - 6–18 months, mobile app redesign, scaling live codebases. 100% client retention across 5 years. ✔️ As a full stack developer react native - Node.js, REST APIs, Firebase, end-to-end mobile app development. 🔥 𝗔𝗖𝗛𝗜𝗘𝗩𝗘𝗠𝗘𝗡𝗧𝗦 ✔️ 5 years · 70+ apps as a React Native Developer and Mobile App Developer - Healthcare, Wellness, Fitness · US, EU, global. ✔️ 30–45% better retention across 15+ Mobile App Development React Native builds - wearable sync, HIPAA-compliant. ✔️ 40–60% faster time-to-market as a Mobile App Developer and iOS Developer vs split native teams - one codebase, full parity. ✔️ 2x faster onboarding as a Mobile App Developer - smart flows, push notifications, subscription logic. ✔️ 100% satisfaction · Mobile App Developer lifetime code warranty across every engagement. 🚀 𝗪𝗛𝗘𝗥𝗘 𝗜 𝗗𝗘𝗟𝗜𝗩𝗘𝗥 ✔️ Patient engagement, wearable & sensor sync, HIPAA-sensitive data - as a React Native Developer this is core territory. 15+ Healthcare Mobile App Development React Native products shipped. ✔️ Fitness booking, real-time workout sync, athlete health tracking - as a Mobile App Developer and iOS Developer for sports and wellness, apps users open daily. ✔️ Corporate wellness - Mobile App Development React Native: react native expo, react native developer expo, react native tailwind UI, multi-role, subscription-driven, production-grade. ✔️ AI wardrobe, lifestyle, and consumer products - react native app developer work across react native mobile, react native engineer, mobile application developer builds where UX drives retention. ✔️ E-Commerce and shopify mobile app builds - mobile app design, mobile app development as a Mobile App Developer delivering Mobile App Development React Native with 20–30% better conversion. 🏆 𝗜𝗡𝗗𝗨𝗦𝗧𝗥𝗬 𝗩𝗘𝗥𝗧𝗜𝗖𝗔𝗟𝗦 ✔️ Healthcare & Clinical - React Native Developer and iOS Developer: HIPAA patient platforms, wearable sync, clinical-grade UX. 30–45% adherence. ✔️ Fitness & Sports - Mobile App Developer and iOS Developer: real-time sync, booking, Strava API. 2x onboarding. ✔️ Corporate Wellness - Mobile App Developer: Mobile App Development React Native for EU-market B2B, multi-role. 25–35% engagement. ✔️ AI & Lifestyle - React Native Developer: AI wardrobe, bubble-style UX, react native mobile consumer products. ✔️ E-Commerce & Shopify - Mobile App Developer: shopify mobile app, mobile app design, Mobile App Development React Native that converts. ⚒️ 𝗛𝗢𝗪 𝗜 𝗕𝗨𝗜𝗟𝗗 ✔️ 70+ apps as a React Native Developer: React Native, React, JavaScript, TypeScript, Redux, Firebase, Node.js, REST APIs, react native expo, react native tailwind - full Mobile App Development React Native stack. ✔️ Native layer as an iOS Developer and Android specialist: iOS Development (Swift, HealthKit, App Store), Android App Development (Kotlin, Google Fit, Play Market), Smartphone, Native App Development. ✔️ UI layer: HTML, HTML5, CSS, CSS3, CSS 3, Responsive Design, Mobile App Design, Web Design - react developer and web developer-aware patterns. ✔️ Backend & data as a full stack developer react native: Node.js, MongoDB, SQL, PHP, Python, Laravel, WordPress, Vue.js, Angular, Java, Git, Software Architecture & Design, Software Development, Debugging. ✔️ Ecosystem: Flutter, flutter developer App Development, Mobile App Redesign, Desktop Application, Shopify, Web Development, python developer tools, business analyst-grade ownership. 🔹 Lifetime warranty - every bug on my side fixed, no questions asked, for as long as your app is live. 🔹 Full ownership as an iOS Developer and React Native Developer - architecture, build, App Store & Play Market. 🔹 React Native Developer · iOS Developer · Mobile App Developer · Mobile App Development React Native · 70+ apps · 100% JSS. Building a mobile product on React Native? Message me 💬

Trusted by startups and growing businesses to build and maintain native iOS apps With 9+ years of experience in native iOS development, I’ve worked with startups and growing companies to launch, maintain, and scale mobile products with strong performance, clean architecture, and polished user experience. I specialize in transforming business ideas into production-ready iOS apps and helping companies modernize or expand existing Android/web products into high-quality native iOS experiences. What I can help your business with - End-to-end iOS app development - Native iOS apps using Swift & SwiftUI - Convert Android/Web apps into iOS apps - MVP development for startups - Long-term product maintenance & scaling - Performance optimization & refactoring - UI/UX implementation with pixel-perfect accuracy - App architecture improvement & technical consulting - Team collaboration and Agile/Scrum workflow Technical Expertise - UI Development: UIKit, SwiftUI, Auto Layout, Core Animation - Reactive Programming: RxSwift, Combine - Networking & API Integration: RESTful APIs, URLSession, Alamofire - Backend & Cloud Services: Firebase, Firestore, Authentication, Analytics - Push Notifications: APNs, Firebase Cloud Messaging (FCM), OneSignal - Architecture Patterns: MVVM, Clean Architecture, Modular Architecture - Local Storage & Database: CoreData, UserDefaults, Realm - Media & Realtime Features: AVFoundation, WebSocket - AI & AR Features: CoreML, ARKit, Vision Framework - Authentication & Security: OAuth, JWT, Keychain - Maps & Location Services: MapKit, CoreLocation, Google Maps SDK - Testing & Debugging: XCTest, Instruments, Memory Leak Detection - CI/CD & Version Control: Git, GitHub, Fastlane, Xcode Cloud - Project Management: Agile, Scrum, Jira, Trello Why clients work with me - 9+ years of professional iOS experience - Successfully launched and maintained production apps - Strong focus on clean, maintainable, scalable code - Clear communication and reliable delivery - Experience collaborating with startups and remote teams - Detail-oriented with strong debugging and problem-solving skills - Long-term partnership mindset I care about building stable products that support real business growth — not just writing code. If you’re looking for a reliable iOS engineer to build, improve, or scale your mobile product, let’s connect.

🏆 𝐓𝐨𝐩 𝟏% 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐢𝐎𝐒 (𝐒𝐰𝐢𝐟𝐭/𝐒𝐰𝐢𝐟𝐭𝐔𝐈) & 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐄𝐱𝐩𝐞𝐫𝐭 | 𝐇𝐢𝐠𝐡 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 MVP & 𝐏𝐢𝐱𝐞𝐥 𝐏𝐞𝐫𝐟𝐞𝐜𝐭 UI | 𝐋𝐨𝐧𝐠 𝐓𝐞𝐫𝐦 Support | Worked with | 𝐂𝐡𝐞𝐜𝐤𝐨𝐮𝐭 𝐩𝐨𝐫𝐭𝐟𝐨𝐥𝐢𝐨 With 50,000+ hours delivered on Upwork, a 100% Job Success Score, and Top Rated Plus status, AppMakers has become a trusted mobile app development partner for startups, scale-ups, and enterprise companies worldwide. Our team has contributed to products used by millions of users, including Hims & Hers 🇺🇸, Insight Timer 🇦🇺, Cal AI 🇺🇸, TejiMandi 🇮🇳, and 3Asafeer Education 🇦🇪. ⭐️ 𝐖𝐡𝐚𝐭 𝐰𝐞 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐰𝐢𝐭𝐡 ✅ Mobile Development - iOS (Swift, SwiftUI), Android, Flutter, React Native (Expo) - Pixel-perfect UI implementation with smooth performance - Custom animations, transitions, and polished user experience - Deep debugging, performance tuning, and stability improvements ✅ Backend & Infrastructure - Firebase, Supabase, PostgreSQL, MySQL - AWS & Google Cloud (GCP) - Scalable backend architecture and API design - REST APIs (Node.js, Python, Django, PHP) ✅ Monetization & Payments - In-App Purchases & Subscription Systems - Integration with RevenueCat, Superwall, Adapty - Stripe payment integrations (one-time & recurring) - Paywall optimization, pricing strategy & lifecycle handling ✅ Analytics & Growth - Mixpanel, Firebase Analytics, AppsFlyer, Branch - Funnel tracking, conversion optimization & retention strategy - A/B testing and data-driven product decisions ✅ AI & Advanced Features - AI integrations, chatbots & LLM-powered experiences - Voice-based features & real-time interactions - Integration with Gemini APIs & OpenAI APIs - ML-based personalization & automation ✅ Deployment & Scaling - App Store & Play Store publishing (compliance-ready) - CI/CD pipelines and automated deployments - Performance optimization & scalability planning - Long-term maintenance, updates & feature scaling 🚀 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗜𝗻 🌟 AI-Powered Mobile Apps (Chat, Automation, LLM APIs) 🌟 Health, Fitness & Wellness Apps 🌟 Telehealth & Remote Care Apps 🌟 Mental Health, Meditation & Self-Care Apps 🌟 Real-Time Video & Live Streaming Platforms 🌟Real Estate & Property Management Apps 🌟 Video Sharing & Creator Economy Apps 🌟 E-Learning & EdTech Platforms 🌟 E-Commerce & Marketplace Apps 🌟 On-Demand Service Apps (Taxi, Food, Delivery, Booking) 🌟 Chat, Messaging & Social Networking Apps 🌟 SaaS & Subscription-Based Mobile Platforms 🌟 Fintech, Payments & Personal Finance Apps 🌟 Coaching, Consulting & Personal Brand Apps 🌟 IoT & BLE-Enabled Smart Device Applications ⚡ 𝗪𝗢𝗥𝗞𝗜𝗡𝗚 𝗔𝗣𝗣𝗥𝗢𝗔𝗖𝗛 • Strategy-first approach with clear product direction • Clean, maintainable architecture designed to scale • Honest timelines and realistic expectations • Consistent updates with zero communication gaps • Long-term partnership mindset, not one-time delivery • Limited client deal to maintain quality and attention 🎁 𝗪𝗛𝗔𝗧 𝗬𝗢𝗨 𝗚𝗘𝗧 - A strategic technical partner, not just a developer - Honest feedback (even if it saves you money) 📩 𝗟𝗘𝗧'𝗦 𝗧𝗔𝗟𝗞 If you're serious about building something that works for long term, execute by right team - hit "Invite Now." Let's talk. ----------------- AI Development, AI App Development, AI-Powered Mobile Apps, Custom AI Solutions, AI Agents Development, AI Integrations, AI Chatbot Development, Mobile App Development, Mobile App Developer, iOS App Development, iOS App Developer, Android App Development, Android App Developer, Flutter App Development, Flutter App Developer, React Native App Development, Cross-Platform App Development, Hybrid App Development, Custom Mobile App Development, Application Development, Mobile Apps, App Development, MVP Development, Full Stack Developer, Full Stack Development, Web Development, Web Developer, Full Stack Web Development, MERN Stack Developer, Node. js Development, SaaS Product Development, Custom Software Development, E-commerce Development 👉 Click “Invite to Job” or “Message”

Hi — I'm Aleksei, an iOS developer based in Tbilisi. Swift + SwiftUI is my home turf — 4+ years shipping iOS apps, including Senior iOS at OxAgile and Middle iOS at ScienceSoft. But I'm not a one-platform dev: I also build cross-platform with Kotlin Multiplatform & Compose Multiplatform (one codebase, real native iOS + Android), ship React Native, and handle the backend myself — Node.js / TypeScript, REST APIs, PostgreSQL. What I'm fast at: - SwiftUI + UIKit feature work, MVVM / Clean Architecture - Kotlin Multiplatform / Compose Multiplatform — native iOS + Android from one codebase - React Native when you want a faster JS path - Backend — Node.js, TypeScript, REST APIs, PostgreSQL, server deployment - StoreKit 2 subscriptions, RevenueCat, Adapty paywalls - Firebase (Auth, Firestore, Storage, Crashlytics) - HealthKit, WidgetKit, App Groups, background URLSession - App Store submission and the painful review cycles (3.2(f), 5.1.1 privacy) - Modernizing legacy iOS projects for iOS 17/18/26 Recent work: redesigned and re-architected a cross-platform (KMP) short-drama app for iOS + Android, finished a native macOS app and got it App Store-ready, and shipped a SwiftUI + Firebase MVP (5★). Available 30+ hrs/week. Response time during my work hours (Tbilisi, GMT+4): under 1 hour. Send me your job link and I'll tell you honestly whether I'm the right fit — and if I'm not, who probably is.