👋 Hey there! I’m a Flutter Developer with 5+ years of experience building sleek, high-performance mobile apps for startups and fast-moving teams. My journey started with native Android and iOS, but I quickly fell in love with Flutter’s speed and flexibility. I’ve led projects from scratch, refactored messy codebases, and shipped cross-platform apps that users actually enjoy. Clean architecture, smooth animations, pixel-perfect UIs? That’s my jam. I also know my way around Firebase, Supabase, REST APIs, and have dabbled in React Native when needed. If you’re looking for someone who writes scalable Flutter code, thinks like a product owner, and genuinely cares about user experience. Let’s build something great.

I specialise in building, fixing and reviewing mobile apps for connected hardware products (BLE Bluetooth, Wi-Fi, IoT) and React Native applications where reliability and real-time behaviour are critical. I’m often brought into projects that are close to release or experiencing issues, to assess build quality, resolve problems, and ensure successful App Store / Play Store submission. This includes stepping into existing React Native apps to: * fix bugs and stability issues * upgrade React Native versions * resolve build and deployment problems * improve performance and reliability I am an Upwork Top Rated Plus developer based in the UK, with extensive experience across iOS (Swift, SwiftUI, Objective-C) and React Native. My core areas of expertise include: * Bluetooth Low Energy (BLE) and connected device integration (health, fitness, audio) * React Native development, debugging and stabilisation of existing apps * iOS development (iPhone, iPad, Apple Watch, Apple TV) * App review and pre-submission optimisation * End-to-end system design (device ↔ mobile ↔ backend) I have worked with global brands including Bose, Corsair, Musclegun, SC Johnson and others, delivering production applications across consumer, health and wellness sectors. My focus is always on delivering reliable, production-ready applications that perform consistently in real-world use. I’m comfortable working with both startups and established teams, and can quickly step into existing projects to provide clear direction and deliver results.

Welcome to my Upwork profile! I specialize in building high-quality native iOS and Android applications (Swift | Kotlin), as well as cross-platform solutions using React Native, Flutter, and other popular frameworks. My expertise extends to all aspects of mobile app development, including UI/UX design, API integration, performance optimization, testing, and deployment. My top priority is to deliver high quality work that meets my clients' specific needs and requirements. Whether you need a brand new app built from scratch or an existing app revamped and updated, I can provide the expertise and skills needed to get the job done on time and within budget. Some of the services I offer include: Native iOS and Android app development (Swift - 5 years, Kotlin - 5 years, Java - 5 years) Cross-platform app development with React Native, Flutter, etc. (Flutter - 3+ years) Custom UI/UX design and development Integration of third-party APIs and services Performance optimization and app scaling Testing and debugging Deployment to app stores and ongoing maintenance and support. If you're looking for a reliable and experienced mobile developer who can deliver high-quality work on time and on budget, look no further. Let's discuss your project and see how I can help bring your vision to live!

⭐️⭐️⭐️⭐️⭐️ Upwork Top Rated Plus 🇺🇸 USA Born and raised 🧑‍💻 Claude Code Expert ✅ Trust & Integrity are my #1 priorities. I pride myself on excellent communication, fast execution, and being a reliable technical partner who fully understands your vision before building. I’m a full stack developer with 12+ years of engineering experience specializing in designing, building, managing, and maintaining production-ready iOS and Android applications. I help startups, founders, and businesses transform ideas into scalable mobile apps — from initial app prototyping and MVP development to long-term maintenance, feature updates, optimization, and scaling. Before AI, I built software line by line and focused on creating secure, scalable architectures. Today, I combine that experience with AI-assisted development to move significantly faster while maintaining production-grade engineering standards at faster speeds and lower costs to you. I leverage Claude Code & Cursor AI to accelerate development, architecture planning, debugging, prototyping, integrations, maintenance, and shipping. My software expertise includes 8+ years of: 📱 iOS app development 📱 Android app development 📱 React Native development 📱 Flutter & FlutterFlow development 📱 Mobile app maintenance & management 📱 App updates, bug fixes, and performance optimization 📱 AI-powered mobile apps 📱 Social media apps 📱 Marketplace apps 📱 SaaS mobile applications 📱 API integrations 📱 Backend architecture 📱 Authentication, payments, subscriptions, notifications, and automation systems I work with people that are looking for a long-term technical partner who can build, manage, and maintain their applications from idea to production. 🙅 Please don't contact me if communication is poor. Keywords: mobile app development, mobile app developer, iOS app development, Android app development, iPhone app developer, Android app developer, React Native developer, Flutter developer, FlutterFlow developer, cross platform app development, native mobile app development, hybrid app development, mobile application development, mobile app design, mobile UI/UX design, mobile app prototyping, MVP app development, startup app development, consumer app development, SaaS mobile app development, AI mobile app development, AI-powered mobile apps, mobile app maintenance, mobile app management, mobile app updates, mobile app optimization, mobile app scaling, mobile app bug fixing, mobile app support, app redesign, app modernization, app performance optimization, mobile backend development, mobile API integration, REST API integration, GraphQL integration, Firebase development, Supabase mobile apps, mobile database architecture, authentication systems, payment integration, subscription apps, App Store deployment, Google Play Store deployment, App Store optimization, push notifications, location-based apps, social media apps, marketplace apps, eCommerce apps, fitness apps, healthcare apps, fintech apps, booking apps, on-demand apps, mobile SaaS platforms, enterprise mobile apps, custom mobile applications, mobile-first development, app architecture, scalable mobile applications, full stack mobile developer, mobile app consultant, mobile app engineer, mobile product development, app MVP builder, startup technical partner

I am a creative and innovative thinker who craves to solve challenges. A motivated team player who consistently strives to develop solutions for complex problems. I aim to thrive in a challenging environment by utilizing my technical skills & expertise towards the development and implementation of new ideas, contributing to the growth of the organization. We are experts in • iOS Application Development • Python,Python Framework(django) • version controlling (SVN,GitHub), • API(facebook API,youtube API), • HTML,HTML5,CSS,CSS3,Bootstrap(responsive designing ), • Ecomerce Application(OpenCart) • Specially ERP work Python Based(OpenERP

✔️ 19+ years of Software Development background ✔️ 10+ years of Mobile Application & Web Development Experience ✔️ Passionate about turning technical innovation into revenue and user impact. My Technical Skill Sets: - Mobile: Swift/SwiftUI, Kotlin/Java, Flutter and React native for cross-platform - Web: Node.js, React.js, ASP, Vue.js, Next, Typescript, Python(Django), Codeigniter, Laravel, JavaScript, CSS, HTML, PHP - Firebase, Amazon Web Services, Godaddy, Crashlytics Shopify: - Shopify Online Store 2.0 - Shopify Theme Development - Shopify Liquid - Shopify CLI - Shopify Hydrogen - Shopify Storefront API - Shopify GraphQL API - Shopify App Development My Delivery: - deploy web to your own hosting - CI/CD with Git repo - submit MVP to App Store Connect for testing via TestFlight - *.apk file for Android version - bug-free full source code - Documentation for the project - 3 months free support Always trying to learn new concepts and development language / to use up-to-date technology Like to maintain long term business affairs with clients. Best regards, Anton. NOTE: I am open to collaborating with you on meaningful and valuable projects.

o 17+ years of experience building iOS apps – one of the original App Store developers (July 2008) o 22+ years successfully working with dozens of clients from my REMOTE office, as a telecommuter o 30+ Apps published in the Apple App Store and Enterprise o 25+ years of professional software development experience o 20+ years of experience with networking protocols & methodologies: REST, JSON, HTTP, TCP, UDP o 20+ years of experience with source control systems: Git, SVN, CVS, RCS, VSS, Perforce o Keen ability to distill complex concepts and systems into easily understandable terms o Outstanding analytical and problem-solving skills o Ability to work independently and as part of a team o Exceptional attention to detail, remarkably fast learner, excellent communication skills. o Personable, enthusiastic, conscientious. o Languages: Objective-C, C++, Swift, Java, Kotlin, JavaScript, PHP, Python, Perl, C, C#. o Operating Systems: iOS, watchOS, macOS, Windows, Linux, Unix. o IDEs: Xcode, Android Studio, Visual Studio, Eclipse. o Experience with API architecture design. o Strong understanding of multi-threaded and concurrent applications. o Expert understanding of all aspects of the iOS provisioning workflow. o Experience developing in an agile and test-driven environment. o Experience creating dynamic libraries with CocoaPods. o Experience with third-party libraries, APIs, and SDKs. o Hands-on experience with UIKit, CoreData, CoreGraphics, CoreAnimation, Cocoa design patterns. o Experience with a wide variety of analytics platforms, including Firebase (Google), Flurry (Yahoo), AWS, comScore, Nielsen, Adobe, MOAT (Oracle). o Ability to bring designer’s creations to life, with pixel-perfect implementations. o Experience in video and media-based development projects. o Working knowledge of Android development (Android Studio, Java, Kotlin, XML, Gradle, CircleCI).

I have over 10 years of experience in Unity. I have developed 20 games so far ranging from turn based to online strategy with match making. I am experienced with Unity's event flow and have a firm grasp of the Structures and Idioms needed in Game Development. My expertise lies in multiplayer games with simple rules that yield complex interactions between users. It doesn't take me long to have a working prototype and my projects are mostly designed to work with mobile and various account systems like Steam, IOS and Google-Play. My recent project is a game called Chess Cubed which will be out on Steam and Android and IOS soon. The game was completed in 6 weeks and offers innovative game-play. This is blazing fast compared to other 3D chess variants that typically estimate 6-8 months of development time and leaves a lot more room for visual polish and Q&A. What more can I say? Apple Vision Pro developer MetaQuest developer. I also have experience in Pose recognition using Nuitrack and Azure Kinect.

⭐️ Upwork Expert-Vetted • Top 1% ⭐️ With 20+ years of hands-on software development and product design experience, I help founders and teams turn ideas into successful startups. My expertise spans Swift, SwiftUI, Objective-C, C/C++, and a deep background in Product Design (UX/UI/IxD/HCI/HF/UxD/IA). I specialize in: • Launching and scaling startups from concept to MVP and beyond
 • Building social networks, streaming platforms, e-commerce, utilities, and B2B solutions
 • Leading UX research to identify user needs and craft intuitive, market-fit products • Designing and architecting products that delight users and drive growth Whether you need a solo expert or a full team, I can take your vision from idea to launch—covering ideation, architecture, design, and development. I’m passionate about creating products people love, and I thrive on solving complex problems with simple, elegant solutions. Let’s build your next successful startup together. 🎯

I build production-grade iOS and Android apps for clients who need polish, reliability, and a developer who ships. 5+ years, 14 deployed apps, full-stack mobile, native + cross-platform. My team and I design, build, and launch mobile apps across: - Native iOS (Swift, SwiftUI) - Native Android (Kotlin) - Cross-platform (Flutter, React Native) - Backend & cloud (Node.js, Firebase, AWS/EC2, REST APIs) - Payments & marketplaces (Stripe, provider payouts, dual-sided platforms) - AI integration (OpenAI API, GPT-powered features in mobile apps) - Hardware & connectivity (Bluetooth LE) - Health & fitness apps (workout tracking, coaching platforms, content programs) What I bring: - A working app on the App Store and Google Play — not a half-built prototype - Clean, maintainable architecture any future developer can pick up and extend - Honest communication: if your budget and scope don't match, I'll tell you up front and help you choose - US-based project management, so you get one point of contact who speaks your language and your timezone How I work: I'm the founder of a small US-based studio. I run your project personally — architecture, scoping, UX, QA, release — and draw on a hand-picked team of developers, designers, and QA engineers for execution. That gives you the oversight and communication of a US contractor with the cost profile of a global team. Typical projects: Marketplace and on-demand apps · health, fitness, and wellness apps · AI-powered mobile products · apps with hardware or payment integrations · greenfield builds from idea to launch · rescue or cleanup of existing mobile codebases. If you have an idea you want built right — or an app that's stuck and needs someone to unstick it — let's talk.