Enthusiastic software developer. I have started programming since 2003 while I had been studying at school. Since that time programming become my lovely work. My Skills: – Swift, Objective-C, JavaScript, C/C++, Ruby, Java, Python, PHP, ActionScript – iOS, visionOS, watchOS, tvOS, macOS, Android, Node.js, Ruby on Rails – SwiftUI, UIKit, Storyboards, Xib, SnapKit, AVFoundation – Game Development: Unity (Unity3d), Cocos2d, SpriteKit, Metal – AR - Augmented Reality: ARKit, ARCore, RoomPlan, SceneKit – Xcode, AppCode, IntelliJ IDEA, Android Studio – AI tools / agents: Claude Code, Codex, Cursor – Git, Mercurial, SVN – Github, Bitbucket, Gitlab – CocoaPods, Carthage, Swift Package Manager – Fastlane, SwiftLint – TDD/BDD: XCTest, Quick, Nimble, Unit tests, UI tests – SwiftData, CoreData, Realm, SQLite, MySQL – Swift Concurrency (Async/Await, Tasks, Actors), Combine – Clean Architecture, MVVM, FRP, RxSwift – Firebase (Firestore, Realtime Database, Authentication, Functions, Storage, Remote Config, Analytics), Supabase, AWS – API integration: Facebook, Twitter, Instagram, Venmo, Coinbase, Google Maps and many other

Hello, I'm Julia, CEO and Founder of GROUP325, a Top Rated Plus Agency. At GROUP325, we specialize in designing and developing cutting-edge digital products using the latest technology. Custom Software Development 💻 We build tailored software to meet your business needs, handling everything from consultation to deployment. Mobile & Web Development 📱💻 We create high-performance mobile and web apps, offering both native and cross-platform solutions. AI & ML Integration 🤖 We implement AI and ML to automate processes, enhance decision-making, and generate insights from your data. UI/UX Design 🎨 We design intuitive and visually appealing interfaces to improve user engagement and satisfaction. Hardware & Sensors Integration 🔌 We connect hardware and sensors with software for real-time data and IoT-driven solutions. Data Science & ML 📊 We turn data into actionable insights with advanced analytics and machine learning. QA and Testing 🛡️ We ensure your software is reliable, secure, and user-friendly through comprehensive testing. MVP Development 🚀 We build MVPs to validate your product idea with essential features quickly. Prototype Development 🛠️ We create prototypes to test and refine your ideas before full development. 📱💻 Technologies We Use: iOS: Swift, Objective-C Android: Java, Kotlin Hybrid App Development: React Native, Flutter, Ionic Web3: Rust & Solidity Backend: Node.js, PHP, Firebase Design: Figma, Adobe Photoshop, Adobe Illustrator, Sketch With no limitations on our tech stack, we deliver the best possible solutions for your digital projects. Let’s create something remarkable together.

I build AI-powered mobile apps for iOS & Android that help businesses automate processes, engage users, and scale faster. Whether you need an AI chatbot, automation system, or a high-performance mobile app — I can help you turn your idea into a reliable, scalable product. What I Can Do for You: AI-powered mobile apps (Flutter, iOS, Android) AI agents & smart chatbot systems Business apps, SaaS platforms & automation tools Game development using Unity Backend systems with Firebase, AWS, MySQL Key Features I Deliver: API & third-party integrations Payment gateways & in-app purchases Real-time databases & cloud sync GPS, maps & location-based services QR / NFC / Bluetooth / WiFi integrations Video streaming & social media integration Notifications, reminders & authentication systems Tech Stack: Flutter (Dart) iOS (Swift, SwiftUI, Objective-C) Android (Kotlin, Java) Unity (Game Development) Why Clients Choose Me: ✔ Built 400+ mobile & game applications ✔ Strong focus on performance & scalability ✔ Fast communication & reliable delivery ✔ Clean, maintainable code ✔ Long-term support I don’t just build apps — I build solutions that solve real business problems. Let’s discuss your project and bring your idea to life.

Senior Full Stack & Mobile App Developer | 15+ Years of Experience I specialize in building scalable Web, Mobile, and Real-Time Communication applications from scratch as well as enhancing existing products with modern technologies and best practices. Core Expertise Frontend: React.js, Next.js, Vue.js, Angular, TypeScript, JavaScript Backend: Node.js, Laravel, PHP Mobile: React Native, Swift, SwiftUI, Kotlin Databases: MySQL, MongoDB, Redis, Firestore WebRTC & Real-Time Solutions Experienced in developing secure video conferencing and messaging platforms using MediaSoup, Jitsi, Twilio, XMPP, Ejabberd, and Erlang. API & Payment Integrations Firebase, Google APIs, Facebook API, Adobe API, Stripe, PayPal, Braintree, Flight Tracking API, Foodics API, and more. I focus on delivering clean architecture, scalable solutions, and high-quality code with clear communication and a commitment to long-term client success. Available for Web Development, Mobile Apps, SaaS Platforms, API Integrations, and WebRTC-based Solutions. Let's build something exceptional together.

I’m a Senior iOS Developer with 10+ years of professional experience and an MS in Computer Science. I help companies design, build, and scale high-quality iOS applications that are reliable, intuitive, and crash-free. 🚀 What I Bring Proven iOS Expertise – Swift, SwiftUI, Objective-C, and cross-platform (React Native, Kotlin). BLE Mesh & Firmware Communication – Experience developing apps that integrate with BLE Mesh lighting systems and embedded firmware, including device provisioning, node status monitoring, and OTA updates. End-to-End Delivery – From architecture & development to App Store release & maintenance. Payments & Fintech – Integrated Apple Pay, Revolut Pay, VISA SDKs and built secure banking solutions. Performance & Testing – Increased code coverage from 20% → 75% and delivered 99% crash-free user rate. Agile Collaboration – Worked with international teams in Agile/Scrum, mentored juniors, and led technical interviews. 🏆 Highlights Travel & Flight Booking App – migrated core pages from Objective-C to SwiftUI, integrated payment SDKs. Firebase integration, Remote Config & Analytics & Crashlytics. iOS Banking App – led full rebuild with modular architecture, achieving 80%+ test coverage. Indoor AR Navigation App – developed custom pedometer & beacon-based positioning system for a large hospital. BLE Mesh Lighting Control App – built iOS app for provisioning, controlling, and monitoring BLE Mesh devices with firmware-level communication. 🔧 Tech Stack iOS: Swift, SwiftUI, Objective-C, XCTest, XCUITest, Snapshot Testing Connectivity: BLE Mesh, Bluetooth Low Energy, Firmware Communication, OTA updates Backend & Cloud: Node.js, Flask, FastAPI, AWS, Azure, Docker, Kubernetes ML/AI: TensorFlow, PyTorch, Generative AI, Computer Vision, Medical Imaging ✅ If you need a reliable senior engineer who can deliver production-ready, scalable apps, let’s connect. I can help with new builds, app modernization, bug fixing, and advanced features like BLE Mesh integrations, payments, AI, or cloud backends. Below I am sharing a few categories of apps that I have developed from scratch. *Flight Booking Application * Online Payment Application * Banking Application * Fintech Application * Navigation and Indoor Navigation Application * Image processing *Bluetooth Mesh *Bluetooth - BLE * Document Management && E-sign Application * E-commerce Application * Beacon Based Application * Photo Editing Application

👉𝑀𝑦 𝑐𝑟𝑒𝑒𝑑: "𝑪𝒓𝒆𝒂𝒕𝒆 𝒔𝒎𝒂𝒓𝒕, 𝒓𝒂𝒕𝒉𝒆𝒓 𝒕𝒉𝒂𝒏 𝒐𝒗𝒆𝒓𝒘𝒉𝒆𝒍𝒎𝒆𝒅". 𝑇𝑜 𝑠𝑢𝑐𝑐𝑒𝑠𝑠𝑓𝑢𝑙𝑙𝑦 𝑙𝑎𝑢𝑛𝑐𝘩 𝑎 𝑝𝑟𝑜𝑑𝑢𝑐𝑡 𝑤𝑖𝑡𝘩𝑜𝑢𝑡 𝑠𝑝𝑒𝑛𝑑𝑖𝑛𝑔 𝘩𝑢𝑛𝑑𝑟𝑒𝑑𝑠 𝑜𝑓 𝑡𝘩𝑜𝑢𝑠𝑎𝑛𝑑𝑠 𝑜𝑓 𝑑𝑜𝑙𝑙𝑎𝑟𝑠 𝑎𝑛𝑑 𝑦𝑒𝑎𝑟𝑠 𝑜𝑓 𝑙𝑖𝑓𝑒. 𝑌𝑜𝑢 𝑜𝑛𝑙𝑦 𝑛𝑒𝑒𝑑 𝒕𝒘𝒐 𝒄𝒐𝒎𝒑𝒐𝒏𝒆𝒏𝒕𝒔: 𝒂 𝒄𝒍𝒆𝒂𝒓 𝒑𝒍𝒂𝒏 𝒂𝒏𝒅 𝒕𝒆𝒂𝒎𝒘𝒐𝒓𝒌. 🏆 Top Rated Plus Upwork Freelancer 🕓 200k Earning + 9K hours worked + 60+ jobs successfully completed ⭐ 5-star reviews from happy customers 🎯 100% Job Success-oriented work 💬 Open-minded person, ready to learn anything, easy to work with 👉 Successfully delivered domains : ➤ Restaurant Apps (Order Booking & Tracking) ➤ Taxi Booking App / Uber clone ➤ Social Networking/Dating App ➤ Photo/Video Editing ➤ GPS ➤ Audio Apps (YouTube API) ➤ Streaming( audio & video) ➤ PDF Converting App ➤ Cloud-based mobile applications 👉 I will be glad to provide the following services (including, but not limited to): ➤ Working on customer needs and converting them into technical requirements ➤ Support of the entire application lifecycle (concept, design, test, release, and support) ➤ Producing fully functional mobile applications with clean code ➤ Designing interfaces for better user experience ➤ Writing unit and UI tests to identify malfunctions ➤ Troubleshooting and debugging to optimize performance ➤ Ensuring the correct linking of the backend and frontend ➤ Implementation of new and further existing apps development ➤ Ensuring new and legacy applications to meet quality standards ➤ Keeping up to date with the terminology, concepts, and best practices for coding mobile apps ➤ Cooperation with function designers, UX /UI designers, and programmers ➤ Consulting the customer`s development team 👉 Technologies I use: ➤ iOS: Swift/Objective C ➤ Android: Java/Kotlin ➤ Cross-platform: Flutter (Dart) ➤ React Native & Hybrid: HTML5, CSS3, JavaScript ➤ Design: Figma/Sketch/Invision/AdobeXD ➤ Cloud services: Firebase, AWS ➤ Persisting Data: Realm Database, Cloud Firestore, SQLite ➤ IDE: Android Studio, Xcode ➤ Control Versions: GitHub, Bitbucket ➤ Architecture: MVVM, MVP, clean code ➤ Professional software engineering tools and methodologies ➤ Equipped to work with IoT dev kits, prototypes, serial console interfaces, etc. ➤ PHP/Java ➤ Parse SDK. ➤ Node.js 👉 Top Business Category / Verticals that we have worked for: ➤ Chat apps (QuickBlox, OpenTok, TokBox,Firebase, XMPP, Firebase) ➤ Fitness/workout ➤ Taxi/GPS ➤ Streaming( audio & video) ➤ Mobile Websites ➤ eCommerce Solution & in-app purchases, point-of-sale tools ➤ Enterprise Mobility Solutions ➤ Food ordering apps ➤ Cloud-based mobile applications ➤ Social networking with GPS, Maps, Chat, Event, Comment, Media Sharing ➤ Apps for all types of IoT devices and wearables using Bluetooth Classic, BLE, and WiFi ➤ Photo/Video Editing & Sharing with Social ➤ Web Service Development using PHP/MySQL, JSON, XML, RSS. ➤ iAd, Revmob, Chartboost ➤ Github, SVN, and JIRA. ➤ Google Map Service, Apple Map ➤ QR code, Bar code ➤ AV Foundation 👉 MY WORKING HOURS: 9 am - 6 pm (IST Time Zone), Monday – Friday (except Holidays). If this suits you and you are looking for the best quality and expertise in Mobile App design and development, just contact me and we will create an amazing product for your clients. :) 🌻 Thanks for your time and good luck!

Native and Hybrid/Cross-Platform App Developer | Full Stack Mobile App Development | UI development & Backend Expertise | API implementation | UI/UX Design I have 7+ years of experience and my expertise lies in developing native iOS and Android apps, as well as cross-platform apps using React Native and Flutter. My QA department is equipped with almost all the devices in demand for proper testing. In addition to this, I have my own Gaming Studio equipped with almost all the equipment needed to meet the client's expectations. Expertise:- • Strong knowledge of Swift, Objective-C, Java, Kotlin, React Native, and Flutter • Experience working with various APIs and SDKs, including Firebase, Google Maps, and AWS • AI development. • Technically confident in creating Animation and 3D models. • Game Environments • Hard Surface Modeling • Low/High -Poly Modeling • 3D Visualization Software • Proficiency in using version control systems such as Git and SVN • Ability to design scalable, maintainable, and reusable code • Strong debugging and troubleshooting skills • Familiarity with Agile methodologies I am highly experienced and skilled developers and I have delivered mobile applications, games, and websites for Prime Time Clients related to Fitness, Social, Streaming, Taxi, Delivery, 2D, 3D, Unity Games, Racing, Board Games, Infinity Games etc. My major focus is timely delivery following clear communication with full commitment and dedication. **If you're looking for a reliable and skilled developer or dedicated resource, I am here to take you to a world of possibilities and opportunities.** Let’s connect to discuss your vision and turn that into working visuals. Regards, Jay

✨ Top Ranked Freelance Worker 📱 8+ Years of Experience in Mobile App Development ⏳ 5,000+ work hours on Upwork completed | 90%+ success on jobs 💼 Trusted by Over 132 Clients | Client Recommendation Rate of 99% 🚀 Why Choose Me? ✅ Proven Expertise 🔹 Delivered high-quality, scalable applications in a variety of verticals of Fintech, E-commerce, Healthcare, IoT. 🔹 Proficient in cross-platform mobile app development with React Native and Flutter. 🔹 Advanced proficiency in iOS (Swift, SwiftUI) & Android (Kotlin, Jetpack Compose) for native app development. 🔧 Multi-Faceted Services 🛠️ Custom Android, iOS & Hybrid app development. 🔗 Backend API implementation with Node.js, MERN stack & Laravel. 📡 Seamless third-party API integration and microservices-based architecture on AWS & Firebase. 🎨 SEO-Optimized App Design 🎯 Expert in designing user-centric, responsive, and beautiful mobile app designs with Figma & Adobe XD. 📊 Results That Matter 🔹 90% Client Retention Rate – Building lasting connections. 💰 Cost-effective solutions that maintain quality. 🏆 Industries that I Specialize in ✔ Fitness & Well-being – Fitness exercise apps, food tracking apps. ✔ Healthcare – Telemedicine (HIPAA-compliant), records of health. ✔ E-commerce – Grocery shopping apps, food delivery, tracking technology. ✔ Fintech – Budgeting apps, payment gateways, crypto wallets. ✔ Social Networking – Social networking websites, dating websites. ✔ Transportation & Logistics – Ridesharing platforms, fleet operations. ✔ IoT & Smart Devices – Monitoring solutions based on NFC/Bluetooth technology. ✔ Blockchain – Smart contracts, decentralized applications, tokens. 🔍 Technical Skills 📱 Mobile App Development: React Native, Flutter, Kotlin, Swift, SwiftUI, Dart. 🖥️ Backend: Node.js, Express.js, Laravel, REST APIs, GraphQL. 📊 Databases: MySQL, PostgreSQL, MongoDB, Redis, Elasticsearch. ☁ Cloud Platforms: AWS, Firebase, Supabase. 🎨 Frontend: React.js, HTML5, CSS3, TypeScript. 🚀 Emerging Technologies: AI, IoT, AR. 💼 Services Offered 1️⃣ End-to-End Mobile App Development (iOS, Android & Hybrid). 2️⃣ UI/UX-Focused App Design powered by cutting-edge technology. 3️⃣ Backend/API Development & Seamless Integrations. 4️⃣ Ongoing Support & App Maintenance. 5️⃣ Quality assurance and bug fixing. 🤝 Let’s Work Together! If you need a dedicated developer to make your app vision a reality with precision, ingenuity, and perseverance, let’s get in touch! 📩 Free Consultation: To discuss your project details, click on ‘Invite to Job’. Mobile App Developer, React Native Developer, Flutter Developer, iOS App Development, Android App Development, Hybrid App Development, Blockchain, IoT Mobile App, Fintech App Development, Healthcare Apps, Fitness Apps, Mobile App Design.

I As an experienced Full-Stack Web and Mobile Developer with over 8 years of professional expertise, I specialize in building robust, high-performance applications that bring real value to clients. From pixel-perfect UI design to scalable back-end architecture, I ensure every project is delivered with precision and quality. Whether you're launching a new mobile app, enhancing your web platform, or fixing complex bugs and test cases, I provide end-to-end solutions with a focus on reliability, maintainability, and client satisfaction. ✅ Core Skills & Expertise: React Native, Native iOS & Android App Development Full-Stack Web Development: PHP, Laravel, CodeIgniter, Symfony, WordPress, Magento Front-End Frameworks: Angular, JavaScript, HTML5, CSS3 Back-End & APIs: Node.js, RESTful APIs Hybrid Mobile Apps: Ionic, Cordova Testing & Debugging: React Native Testing Library, Unit Testing, Debugging Execution Errors ✅ Why Work With Me? Proven ability to fix critical bugs and test case issues efficiently Strong problem-solving mindset with attention to detail Available for long-term collaborations (30+ hours/week) Committed to clear communication and on-time delivery Focused on building long-term relationships through quality work and trust Let's work together to bring your project to life and achieve your business goals with professional results.

I’m a senior mobile and web developer with 14+ years of experience delivering high-quality, scalable apps across iOS, Android, and web platforms. I’ve worked with startups, agencies, and enterprise clients—leading everything from architecture and UI design to production deployment. On iOS, I bring top-notch expertise in SwiftUI, along with a solid foundation in UIKit, Core Data, and system-level integrations. I also use AI-assisted development workflows to boost productivity, reduce bugs, and optimize delivery speed. Key Skills & Experience: • iOS Development (SwiftUI, Swift, Objective-C, Core Data, Firebase, Parse) • Android Development (Java, Firebase, Parse SDK) • Web Backend (Node.js, Express, MongoDB) • AI-Driven Programming & Debugging • SDK & Framework Development • Performance Optimization & Architecture Audits • App Store Submission & Review Handling If you’re looking for someone who blends deep technical skills with AI-enhanced efficiency, I’d be happy to connect.