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: 10.07.26

Over 15 plus years of experience in Mobile App Development, Top Rated with more than 5000 hours Senior Mobile App Developer - iOS, iPad, Capacitor apps , Xcode, Core data,OpenAI, NFC tags,Widgets implementation with React native, CI/CD expert with GitHub Actions & TestFlight automation. What sets me apart from other freelancers is my commitment to delivering high-quality work on time and on budget. I pride myself on my strong communication skills and ability to collaborate effectively with clients, and I always make sure to thoroughly understand project requirements before starting work. 🏆 *** Top Rated Upwork Freelancer *** *** 100% Job Success Ratio *** *** 5000+ Hours of working with Upwork *** 🏆 𝐂𝐋𝐈𝐄𝐍𝐓 𝐓𝐄𝐒𝐓𝐈𝐌𝐎𝐍𝐈𝐀𝐋𝐒: ★★★★★ Assist with initial release of iOS app to app store Shami was responsive and experienced. Able to help with this project. Would hire again. ★★★★★ Swift UI Code review - Delivering a written recommended improvement report. "Shami is very responsive, knowledgeable and easy to talk with. Highly recommend." ★★★★★ iOS (Swift App) "Very professional, and great iOS Developer". ★★★★★ CBT Therapy using Mistral.ai. ""Thanks a lot Shami for your work and reactivity. I'll get back to you soon for another project if that sounds good to you". ★★★★★Features to connect users Top Top ""Shami finished the job successfully, on time and on budget. Great guy! I'm looking forward to work with him again." ★★★★★ Advice about app development ""Great work. I'm looking forward to work with him again." ★★★★★ Update old iOS and Android Apps and Upload on respective Play Stores "First App work from my end on Upwork and the experience of communication and expected work both met at the first time. Loved to work." ★★★★★ Need to change APi param in iOS App "Shami is a very talented iOS developer. I enjoyed working with him. He understands things quickly and delivered the project before the deadline with quality work." *********************************************** Hello, Welcome to my Upwork profile. My name is Shami Kumar, from India. I have been working as a freelance iOS engineer for more than 12+ years now. if you hire me, you will have no trouble regarding time or quality. Why should you hire me? - Full-time availability (40+ hours/week) - 14+ years of experience - Required skillset - Quality Code/result - Always dedicated to client - Challenges lover Here’s what I specialize in: 🏆 Programming Languages 🏆 • Swift - Expert • Objective-C - Expert • SwiftUI - Expert 🏆 Platforms 🏆 • iOS • iPadOS • WatchOS • TvOS 🏆 Architectures 🏆 • MVVM • MVC 🏆 Frameworks 🏆 • UIKit • CoreData • CoreBluetooth • CoreMotion • CoreLocation • AutoLayout • SpriteKit • Notifications • Firebase • SocketIO 🏆 Programs & Other Tools 🏆 • Figma, SketchApp • Source Tree, Git Desktop, Bitbucket • Xcode, Git, Cocoapods, SVN, Jira, Trello, VPN, TestFlight, Jira, Crashlytics Hopefully we work together, Shami K

I bring 7+ years of expertise in mobile app development, with a strong foundation in Objective-C, Swift, and React Native, along with experience in Flutter. My knowledge of MVC, MVVM, VIPER, and VIP architectures allows me to design scalable and maintainable applications that deliver exceptional user experiences. I thrive in dynamic, collaborative environments where I can contribute my skills to build innovative and impactful apps. Over the years, I’ve built, optimized, and deployed high-quality mobile solutions across multiple platforms while ensuring clean, testable, and production-ready code. If you’re looking for a mobile app engineer who can deliver robust solutions, solve complex issues, and collaborate effectively with cross-functional teams—let’s connect and discuss how I can contribute to your success. 🔑 Core Expertise iOS Development: Swift, Objective-C, SwiftUI Cross-Platform Development: React Native, Flutter Architectures: MVC, MVVM, VIPER, VIP Firebase Integration 🛠 Skills Clean Coding Practices Unit & UI Testing RxSwift & Combine CI/CD (Continuous Integration & Delivery) ✅ I am passionate about building seamless mobile experiences and turning ideas into scalable, user-friendly applications.

Mobile engineer for Android (Kotlin/Jetpack Compose) and iOS (Swift/SwiftUI/KMM). I build robust apps that connect to real hardware - USB/OTG, RFID/NFC, BLE, Wi-Fi, GPS/GNSS (NMEA) including Arduino/ESP32 bridges and hybrid stacks with WebView/Capacitor. I focus on clean architecture, measurable outcomes, and fast iteration with strong logging and profiling. I can help you with: Android - Kotlin, Jetpack Compose (Material 3, Navigation), MVVM/Clean, Coroutines/Flow, Hilt, Room, DataStore, WorkManager. iOS - Swift/SwiftUI, Combine, background modes, KMM for shared business logic. Connectivity & hardware - USB serial (CDC/ACM), RFID/NFC, BLE (GATT), Wi-Fi, TCP/UDP/HTTP, MQTT, GPS/GNSS (NMEA), Arduino/ESP32 integration, hot-plug & permissions, stable background workers. Media & data - capture/convert, multipart uploads, resilient retries, offline modes, structured logs & metrics. Hybrid - WebView-native bridges, Capacitor plugins; clean JS APIs, caching, and error handling. Release & quality - Crash/ANR reduction, memory and startup profiling. Process: requirements - technical plan - iterative delivery (weekly sprints) - QA - release. Communication: concise updates, early risk flags, demo build each milestone. Let’s discuss scope - I’ll propose a lean plan and milestones. _____ Говорю по-русски. Беру задачи по Android/iOS, интеграции оборудования (Arduino/ESP32, USB/OTG, RFID/NFC, BLE, Wi-Fi, GPS/GNSS), исправлению ошибок и проблем стабильности. Работаю итеративно, с отчётами и демо-сборками на каждом этапе.

If you have a business idea and you want to convert it into a mobile application, I would like to help you. I have 12+ years of experience in mobile app development. Expert in Swift, SwiftUI, Objective-C and Flutter. Please check the client's feedback: "It was a pleasure to work with Shrejash! He demonstrated his expertise in iOS; showed strong initiative on the project; excellent in communicating progress and presented any questions quickly so we could meet our deadline. He was always available when we needed him, and transparent when he had questions or issues. The app he built was produced exactly to the specifications – nothing missing, and each part thoroughly tested and polished. I would happily hire him again." Following are some kinds of projects that I have successfully completed:- - Product-based - E-commerce - Photo and Video - GPS based apps - Social networking apps - Enterprise apps - Medical apps - Utility apps My strong points: - Strong written and verbal English - Sound technical knowledge - Great communication skills - Top rated developer on Upwork - Very good reviews by clients

Passionate iOS developer with a 5-year track record in creating elegant and efficient mobile applications. Proficient in Swift, specialising in turning innovative ideas into robust code. Experienced in collaborating with cross-functional teams to deliver high-quality software. Always eager to explore new technologies. 🚀 Key Skills: Swift | SwiftUI Xcode | Interface Builder MVC | MVVM RESTful APIs | JSON Git

I'm Roman, CTO and founder of Define Solutions. Since 2016, we've shipped more than 200 mobile projects generating over 15 million downloads across the App Store. Over the years, we've built products across almost every category: fitness and health tracking, healthcare platforms, GPS and navigation systems, marine navigation applications, mapping and location-based services, entertainment and lifestyle products, news and media platforms, music streaming applications, restaurant and food ordering systems, e-commerce stores, social networks, messaging platforms, e-readers, marketplace applications, iPad products, Apple Watch companions, and CarPlay integrations. Beyond traditional mobile apps, we've delivered AI-powered experiences, recommendation engines, subscription-based products, payment integrations, real-time communication features, complex backend integrations, and highly scalable enterprise systems. We've worked with startups building their first MVPs, established businesses launching new products, and large organizations developing both internal operational tools and customer-facing applications used at scale. Some projects start with a detailed specification. Others arrive halfway through development after a previous team couldn't deliver. We've successfully handled both. One thing you learn after 200+ projects is that writing code is only a small part of building a successful app. The projects that launch smoothly are the ones where requirements are clear, technical risks are identified early, App Store constraints are considered from day one, and everyone agrees on what success looks like before development begins. That's why every engagement starts with understanding the product, validating the scope, and identifying potential challenges before a single line of code is written. Whether you need a new iOS app, help finishing an existing project, or guidance on architecture, scalability, AI integration, App Store launch strategy, or modernizing an existing codebase, I'd be happy to discuss it. Send me a message and I'll tell you honestly whether we're a good fit and what it would likely take to get your project delivered.

⭐ Top Rated | 100% Job Success | 10+ Years Experience Build iOS apps from idea to App Store launch Modern iOS, tvOS, watchOS apps with Swift & SwiftUI Integrating APIs, Firebase, and real-time data Implementing in-app purchases and push notifications Optimizing performance and fixing complex bugs I don’t just write code I help turn ideas into reliable, production-ready apps. 🛠 Tech stack: Swift, SwiftUI Firebase (Auth, Firestore, Notifications) REST APIs Core Data, Combine

🌟 Apple Vision Pro Pioneer | Since Day 1 🏆 Top Rated | 100% Job Success 🚀 Real Device Owner | visionOS 26.0 Ready I specialize exclusively in visionOS and spatial computing, delivering high-quality apps from concept and prototype to App Store launch. I bring deep platform knowledge, real-device experience, and a strong focus on practical, production-ready solutions. From 3D interfaces and RealityKit-based interactions to system architecture and App Store compliance - I cover the full development cycle with a clear understanding of the platform’s unique challenges. If you’re interested, feel free to reach out. I’m open to both long-term collaboration and short expert input. 🖋️ Best regards, Arman

🏆 𝐓𝐨𝐩-𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 (𝐓𝐨𝐩 𝟏𝟎%) 🏆 | 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 𝐒𝐜𝐨𝐫𝐞 | 𝐢𝐎𝐒 & 𝐀𝐧𝐝𝐫𝐨𝐢𝐝 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐒𝐰𝐢𝐟𝐭 | iOS App Developer Swift | 𝐊𝐨𝐭𝐥𝐢𝐧 | Android App Developer Kotlin | 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 | 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 | 𝟖+ 𝐘𝐞𝐚𝐫𝐬 I’m a Mobile App Developer focused on building scalable, secure, and production-ready mobile products for iOS and Android ecosystems. My work combines mobile app development, mobile app design, clean architecture, API integrations, Firebase workflows, authentication, analytics, payments, push notifications, and long-term product support. I focus not only on features, but also on performance, stability, maintainability, and business growth. As an iOS App Developer Swift specialist, I deliver native Apple ecosystem solutions through Swift, ios development, ios mobile app development, ios swift engineering, App Store readiness, watchos, apple watch, watchkit, and smart watch integrations. My iOS experience covers MVPs, product recovery, scalable production systems, enterprise apps, and secure ios applications. As an iOS App Developer Swift expert, I focus on polished UI, reliable architecture, optimized performance, and maintainable code. As an Android App Developer Kotlin specialist, I build native Android apps using Kotlin, android app development, android development, modular architecture, Firebase, APIs, payments, analytics, authentication, and production-ready release workflows. My Android App Developer Kotlin work includes scalable android app, android app developer, android application, and complex mobile ecosystems designed for long-term growth. As an Android App Developer Kotlin expert, I focus on clean architecture, stable performance, security, and maintainable Android products. I work as an iOS App Developer Swift and Android App Developer Kotlin for businesses that need reliable native mobile development, strong technical decisions, and product-focused delivery. This native expertise helps create secure ios and android solutions for fintech, e-commerce, booking platforms, fitness, health, taxi, transportation, delivery, dating apps, social media app, live streaming app, video streaming systems, AI-based mobile systems, SaaS, business apps, wearables, and IoT. When product goals require faster launch or flexible delivery, I also support react native mobile, react native developer, react native expert, react native app, react developer, react js, react redux, react node, react native firebase, cross platform mobile development, cross platform mobile, hybrid app, hybrid app developer, flutter, flutter developer, flutter dart, flutter firebase, and flutter app workflows. ⭐️⭐️⭐️⭐️⭐️ “Reliable mobile app developer delivering stable releases. From MVP recovery to scalable production systems.” 🎯 What I bring: ✔️ 8+ years as a mobile app developer across full mobile app development lifecycles. ✔️ Strong iOS App Developer Swift background for native ios app, ios developer, senior ios developer, ios app developer, and scalable swift ios development. ✔️ Strong Android App Developer Kotlin background for native android developer work, kotlin developer workflows, android app development, and enterprise Android delivery. ✔️ Experience with API integrations, Firebase, authentication, analytics, payments, push notifications, backend coordination, wordpress, shopify, and mobile app marketing. ✔️ Product collaboration with mobile app designer, mobile app developers, product teams, and business stakeholders. 📱 Mobile Applications I Develop: • Taxi & Transportation Apps • Booking platforms • Fitness & Health Apps • AI-based mobile systems • Security-focused ios and android solutions • Fintech & Payments Apps • E-commerce apps connected with wordpress and shopify • Business & SaaS applications • Social media app, live streaming app, and video streaming platforms • Wearables & IoT systems with watchos, apple watch, watchkit, and smart watch • Delivery and Dating Apps 🚀 Technologies & Skills I architect scalable ecosystems combining native and cross-platform engineering. iOS App Developer Swift products are powered by Swift, ios developer swift workflows, ios development, ios swift delivery, App Store readiness, and iOS App Developer Swift expertise. Android App Developer Kotlin products are powered by Kotlin, android application architecture, Firebase, API connectivity, and Android App Developer Kotlin expertise. I also deliver react native, flutter, hybrid app, and cross platform mobile ecosystems. As an iOS App Developer Swift professional, I help teams build polished iOS applications that are easy to scale. With both iOS App Developer Swift and Android App Developer Kotlin expertise, I support full-cycle mobile app development. iOS App Developer Swift and Android App Developer Kotlin delivery stays production-focused. 📩 Ping me. Let’s build something great.