I am a senior full-stack developer with more than 13 years of experience working in IT sphere. I have developed a great amount of applications for companies who work in different fields. My core competency lies in building web/mobile applications and services for a wide areas of using. I am leveraging only the most efficient technologies to create my projects: - JavaScript, TypeScript - React Native, React, Next.js - Redux - Node.JS, Express.js, Nest.js - MongoDB, MySQL, PostgreSQL - GraphQL - HTML5, CSS3, Tailwind CSS - Firebase I work with web solutions using all the technologies listed above and can also adapt to additional technologies as needed. Waiting to provide you the best quality solution for your project.

I've successfully delivered 80+ mobile and web applications for startups, businesses, and enterprises, helping clients launch products that are scalable, user-friendly, and ready for real-world growth. More importantly, I've helped founders transform ideas into investor-ready products and business solutions. My development approach focuses on clean architecture, scalability, and long-term maintainability, ensuring your product continues to grow with your business. From planning and UI/UX to development, testing, deployment, and post-launch support, I manage the complete development lifecycle. You'll receive regular progress updates, milestone deliveries, and clear communication throughout the project. What I Specialize In • React Native (TypeScript, Expo, Native Modules) • Flutter (Cross-platform iOS & Android Apps) • React.js & Next.js (Modern Web Applications & Dashboards) • Node.js (REST APIs, Backend Development, Authentication) • Firebase (Authentication, Firestore, Cloud Functions, Push Notifications) • MongoDB & PostgreSQL Database Development • Third-Party API Integrations • Payment Gateway Integration (Stripe, Razorpay, PayPal) • Real-time Chat, Notifications & WebSockets • AI Integration (OpenAI, GPT-4/5, Claude AI, Gemini, Chatbots & Automation) • Admin Panels, SaaS Platforms & Business Portals • UI/UX Design – Modern, Responsive & User-Friendly Interfaces Why Choose Me? End-to-End Development from idea to deployment Scalable Architecture built for future growth Agile Development with weekly progress updates Clean, maintainable, and well-tested code Transparent communication and realistic timelines Experience building MVPs, SaaS products, AI-powered platforms, enterprise applications, and customer-facing products Competitive pricing without compromising quality Industries I Work With Healthcare • Marketplace • E-commerce • SaaS • AI Platforms • Education • Food Delivery • Fintech • Real Estate • Logistics • Transport • Hospitality • Manufacturing • Sports & Fitness • Travel • Human Resources • LegalTech • Lifestyle • Dating Apps • Social Networking • Retail • Rental Platforms • Automotive • Marketing • Entertainment • Wellness • Business Automation • Medical Dashboards Whether you're building a mobile application, web platform, admin dashboard, SaaS product, or a complete full-stack solution, I can help turn your idea into a reliable, scalable, and high-performing product. Let's build something great together. Keywords Full Stack Developer React Native Developer Flutter Developer React.js Developer Next.js Developer Node.js Developer JavaScript Developer TypeScript Developer Mobile App Developer Web Application Developer Cross-Platform App Development Frontend Developer Backend Developer MERN Stack Developer SaaS Development Admin Panel Development Dashboard Development AI App Development AI Integration OpenAI API Integration Claude AI Integration GPT-4/5 Integration Chatbot Development Firebase Developer API Integration Real-Time Applications Marketplace Development E-commerce Development Healthcare App Development Food Delivery App Development Dating App Development Education App Development Enterprise Application Development

Full-Stack & Mobile Architect with 12+ years of experience delivering enterprise-grade digital solutions for 65+ global clients. I specialize in building scalable web and mobile applications, AI-integrated systems, and cloud-based platforms that transform complex business requirements into secure, high-performance, production-ready solutions. With a 100% Job Success Score and a flawless delivery record, my work has contributed to 160K+ app downloads across industries including Healthcare, FinTech, HRMS, SaaS, eCommerce, and Enterprise systems. I bring strong expertise across MEAN/MERN, React, Angular, Node.js, Ionic/React Native, AI/ML integrations, cloud infrastructure (AWS/Azure/Firebase), and enterprise integrations such as ERP, CRM, and payment systems. I focus on clean architecture, scalability, security, and long-term maintainability — delivering enterprise quality with startup agility and full ownership from concept to deployment. Core Technical Expertise * Cross-Platform Mobile Development (Ionic, React Native, Cordova, Capacitor) * Micro Frontend * Modern Web Applications (React, Angular, Node.js, PHP) * Micro Services * AI & Intelligent System Integration (OpenAI, automation, recommendation engines) * Cloud Infrastructure (AWS, Azure, Firebase) * Database Architecture (MySQL, PostgreSQL, MongoDB) * Enterprise Integrations (ERP, CRM, Payment Gateways) * App Store & Play Store Deployment * Agile Delivery & Structured Project Execution I would be glad to support you with your project and understand your requirements in detail. If you are available, we can schedule a short call or connect over chat to align on the scope and expectations.

🏆 Top Rated Plus Developer 📱 12+ Years of Experience in Mobile App Development ⚡ Scalable, Performance-Driven & User-Focused Solutions Hi there, I am a mobile app developer focused on helping businesses turn ideas into stable, scalable, and user-friendly applications. From MVPs to enterprise-grade platforms, I work closely with clients to build mobile solutions that are not only technically strong but also aligned with long-term business goals. Whether it’s a cross-platform app using React Native or Flutter, or a native iOS/Android application with Swift and Kotlin, my focus remains the same: building reliable products with clean architecture, smooth performance, and excellent user experience. Expertise:- React Native Development Flutter Development Native iOS Apps (Swift / SwiftUI) Native Android Apps (Kotlin) Firebase & Supabase Integration REST APIs & Backend Connectivity Real-Time Chat & Streaming Features Scalable App Architecture Performance Optimization Industry Experience:- E-Commerce & Marketplace Apps Fitness & Wellness Platforms Social Networking Apps Logistics & Tracking Solutions HR & Workforce Management Systems On-Demand Service Platforms Tech Stack:- React Native • Flutter • Swift • Kotlin • Firebase • Supabase • Laravel • Node.js • Twilio • Agora • WebRTC My Approach to Mobile App Development:- I focus on building applications that are not just functional, but scalable, stable, and easy to evolve as your business grows. Clients generally work with me for: Structured and scalable development practices Strong focus on app performance and user experience Proactive communication and smooth collaboration Reliable long-term technical support Practical solutions aligned with business goals I value long-term partnerships and enjoy contributing as a technology partner rather than just a development resource. If you are planning to build or scale a mobile application, Let's connect..!

𝐈𝐟 𝐲𝐨𝐮 𝐰𝐚𝐧𝐭 “𝐡𝐢𝐠𝐡-𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐬”: 𝟏𝟎+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐡𝐢𝐠𝐡-𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐬 𝐮𝐬𝐢𝐧𝐠 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 𝐟𝐨𝐫 𝐬𝐭𝐚𝐫𝐭𝐮𝐩𝐬 𝐚𝐧𝐝 𝐩𝐫𝐨𝐝𝐮𝐜𝐭 𝐭𝐞𝐚𝐦𝐬. I’m a React Native mobile app developer specializing in building scalable, production-ready applications for Android and iOS using a single cross-platform codebase. I focus on delivering apps that are not just functional, but fast, stable, and optimized for real-world performance. My approach emphasizes clean architecture, reusable components, and maintainable code, ensuring your app scales as your business grows. Most of my clients work with me long-term because I act as a technical partner, not just a developer completing tasks. ➤ 𝐖𝐇𝐀𝐓 𝐈 𝐂𝐀𝐍 𝐇𝐄𝐋𝐏 𝐘𝐎𝐔 𝐖𝐈𝐓𝐇? ============================= ▸ 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 Build high-performance cross-platform mobile apps with React Native for Android and iOS, delivering native-like UI/UX and smooth user experiences. • Cross-platform app development (Android & iOS) • REST API & GraphQL integration • Authentication & secure user flows • Push notifications & real-time features • Clean architecture & scalable structure • Reusable component-based development • Performance optimization (memoization, lazy loading) • Efficient state management • Handling large datasets (pagination, virtualization) • Background tasks & offline support • Debugging & performance monitoring (Flipper, DevTools) ➤ 𝐓𝐎𝐎𝐋𝐒 & 𝐓𝐄𝐂𝐇𝐍𝐎𝐋𝐎𝐆𝐈𝐄𝐒 ========================= ▸ 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 • React Native (CLI & Expo) • JavaScript (ES6+) & TypeScript • React Hooks & Functional Components • Redux / Redux Toolkit / Zustand / Context API • React Query / Axios / Fetch API • React Navigation • AsyncStorage / MMKV • Firebase (Auth, Firestore, Push Notifications) • WebSockets / Real-time Communication • Native Modules (iOS & Android Integration) • Flipper / React DevTools • Performance Optimization Techniques • Fastlane / App Store & Play Store Deployment ➤ 𝐖𝐇𝐘 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐂𝐇𝐎𝐎𝐒𝐄 𝐌𝐄? =========================== • High-performance, production-ready React Native apps • Clean, scalable, and maintainable code architecture • Strong focus on UI/UX and smooth app performance • Experience building apps from MVP to scalable products • Long-term collaboration and reliable communication ➤ 𝐑𝐄𝐀𝐃𝐘 𝐓𝐎 𝐁𝐔𝐈𝐋𝐃 𝐘𝐎𝐔𝐑 𝐑𝐄𝐀𝐂𝐓 𝐍𝐀𝐓𝐈𝐕𝐄 𝐀𝐏𝐏? Send me a message to discuss your project. I can help you turn your idea into a fast, scalable, and high-quality React Native mobile app for Android and iOS. Let’s build something that performs, scales, and delivers real results

🏆 𝐓𝐨𝐩-𝐑𝐚𝐭𝐞𝐝 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 𝐄𝐱𝐩𝐞𝐫𝐭 | 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 (𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 & 𝐅𝐥𝐮𝐭𝐭𝐞𝐫) 🏆 Top Rated Freelancer ✅ 100% Job Success Score 💰 $20K+ Earned on Upwork 🚀 10+ Years of Experience in Web & Mobile Development Need a Shopify store that converts visitors into customers? Or a mobile app that delivers a seamless user experience? I help startups entrepreneurs and growing businesses build high quality Shopify stores custom and mobile applications that are scalable secure and designed for business growth. Over the years I have successfully delivered eCommerce stores business websites SaaS platforms and mobile applications for clients across different industries. My focus is not only on development but also on creating solutions that improve user experience increase conversions and support long term growth. 🛒 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 * Shopify Store Setup * Shopify Theme Customization * Shopify Plus Development * Shopify Liquid Development * Custom Shopify Sections * Shopify App Integration * Payment Gateway Integration * Shopify Speed Optimization * Shopify Store Migration * Shopify Bug Fixes & Maintenance * Shopify CRO & Conversion Optimization 📱 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 * React Native Development * Flutter Development * Android App Development * iOS App Development * Firebase Integration * REST API Integration * Push Notifications * Admin Dashboard Development * App Deployment & Publishing * App Maintenance & Support 💡 𝐀𝐝𝐝𝐢𝐭𝐢𝐨𝐧𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 * UI UX Implementation * Figma to Shopify * Figma to WordPress * Figma to Mobile App * SaaS Application Development * CRM Integration * Stripe Integration * PayPal Integration * Third Party API Integration 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞? ✔️ Top Rated Upwork Freelancer ✔️ 100% Job Success Score ✔️ Strong Communication ✔️ Fast Turnaround Time ✔️ Clean Scalable Code ✔️ Long Term Technical Support ✔️ Reliable Project Delivery ✔️ Business Focused Approach I believe successful projects are built through clear communication proper planning and attention to detail. Whether you need a Shopify store WordPress website WooCommerce solution or a mobile application I can help turn your idea into a reliable and scalable product. Let's discuss your project and find the best solution for your business. Keywords: Shopify Developer, Shopify Expert, Shopify Plus Developer, Shopify Theme Developer, Shopify Store Designer, Shopify Liquid Developer, Shopify App Integration, Shopify Store Setup, Shopify Migration, Shopify Speed Optimization, Shopify SEO, WooCommerce Developer, Elementor Expert, Elementor Developer, WooCommerce Expert, Website Developer, Full Stack Developer, React Native Developer, Flutter Developer, Mobile App Developer, Android Developer, iOS Developer, API Integration, Firebase Developer, SaaS Developer, Figma to WordPress, Figma to Shopify, E Commerce Developer, Landing Page Developer, Shopify Store Development, Custom WordPress Development, Elementor Website Builder, WooCommerce Store Setup, Mobile Application Development, Cross Platform App Development, Front End Developer, Back End Developer, Node.js Developer, Next.js Developer, Website Optimization, Website Maintenance, E Commerce Website Development, Payment Gateway Integration, Custom Web Development, UI UX Implementation, Responsive Website Development.

Hi, I am Vakul, I build mobile applications that function as complete, production-grade systems, not just front-end apps, but products tightly integrated with backend services, APIs, real-time workflows, and external systems. With 9+ years of experience, I’ve developed solutions across healthcare, fintech, IoT, SaaS, AI, marketplaces, and edtech, where applications handle real users, real-time data, and complex operational workflows at scale. My work focuses on designing how mobile, backend, and integrations operate together, ensuring reliability, performance, and long-term scalability. Core Technical Skills Cross-platform mobile architecture & scalable app design Complex state management & workflow orchestration API integration & backend-driven application development Real-time systems (tracking, notifications, live updates) BLE & hardware/device integrations Payment systems & subscription lifecycle handling Authentication & secure user management Performance optimization & application scalability CI/CD pipelines & production deployments Tech Stack React Native, Flutter, Kotlin JavaScript, TypeScript Redux, Bloc, Riverpod, GetX REST, GraphQL, Firebase, AWS S3 SQLite, Realm Stripe, Razorpay, Apple Pay, In-App Purchases Firebase Auth, Apple Sign-In, Social Login, Biometric Auth Fastlane, Codemagic, CI/CD, OTA Updates (CodePush) VS Code, Android Studio, Xcode, GitLab, Bitbucket, GitHub Selected Work: 1. Healthcare Systems Built end-to-end applications covering patient journey, care programs (CCM, RPM, RTM, BHI), and provider workflows, with BLE device integrations and real-time vitals tracking. Enabled continuous monitoring, alerts, and structured clinical data systems 2. Fintech Systems Developed systems for payments, subscriptions, lending, and financial workflows, integrated across mobile and backend services. Ensured reliable transaction handling and lifecycle management 3. IoT Applications Implemented BLE-based systems for wearables and devices with real-time and background synchronization. Delivered stable device communication and data pipelines 4. SaaS ERP & POS Platforms Built systems covering inventory, orders, purchasing, and multi-location operations with real-time synchronization. Centralized business workflows and operational control 5. Marketplace Platforms Developed platforms for service discovery, quotes, bookings, and escrow payments with real-time communication. Delivered secure, end-to-end transaction workflows 6. AI Applications Built AI systems using OpenAI / LLaMA with RAG pipelines, enabling contextual responses and intelligent features. Delivered personalized, memory-driven user interactions Let’s Build If you’re building a solution that involves real workflows, real integrations, and real users, I can help you design and deliver it the right way from architecture to production.

Hi, I specialize in building scalable eCommerce solutions, mobile apps and AI-powered systems that help businesses grow faster and operate smarter. With strong experience in OpenCart, PrestaShop, React Native and AI/automation, I help clients turn ideas into reliable, high-performing digital products. Whether you need a custom online store, a mobile app or automation to save time I focus on delivering solutions that actually work in real business scenarios. Prestashop and Open Cart Services: • Full PrestaShop store development • Complete OpenCart store development from scratch • Theme installation & customization • Payment gateway setup and integration (Stripe, PayPal, Razorpay, etc.) • UX/UI improvements & Mobile responsiveness • Multi-vendor marketplace setup • Custom module/extension development • Third-party API integrations (CRM, ERP, shipping, inventory integrations) • Version upgrades & migrations • Bulk product upload, import/export & data management • Store maintenance, updates, bug fixes & troubleshooting • SEO-optimized structure and on-page improvements • Analytics setup (Google Analytics, enhanced eCommerce tracking) Mobile App expertise: • Cross-platform apps with React Native (iOS & Android) • Integrate RESTful APIs, GraphQL and third-party services • Design and implement clean, responsive and user-friendly UIs • Set up app navigation, authentication and push notifications • Implement Redux or Context API for efficient state management • Publish and maintain apps on Google Play Store and Apple App Store • Provide ongoing support, updates and feature enhancements AI and Automation: • AI-powered web & mobile app integration • Chatbots & conversational AI (ChatGPT, LLM-based apps) • Webhooks & automation workflows • OpenAI / GPT API integrations • RAG pipelines + LLM-based decision logic • Prompt engineering & model fine-tuning • API-driven AI integrations ✅ Immersive Technologies • AR Applications: ARKit, ARCore, Vuforia • VR Applications: Oculus, HTC Vive • Extended Reality (XR): Seamless AR, VR and MR integration • Unity/Unreal: App/Game Development, Metaverse • 3D Technologies: Three.js, WebGL, Blender Tech Stack: Node.js (Express), React, HTML5, CSS3, JavaScript, Firebase If you have any ideas or requirements, feel free to reach out. I am always open to discussions & committed to providing the best solutions for your business. Thank You,

👋 Greetings! I’m a seasoned Mobile developer with over 1️⃣5️⃣ years of experience in iOS and Android Mobile App Development. I combine design, development, and technical leadership to deliver high-quality, scalable apps. 🎓 M.S. in Computer Programming, with expertise across multiple development stacks. ⭐️ Hundreds of 5-star reviews and 🎯 100% Job Success on Upwork and beyond! 🚀 About Me As a full-cycle Mobile App Developer, I take your project from an initial 💡 idea to a fully functional 📱 mobile application. I handle everything from UI/UX design to backend API integration, ensuring a seamless experience from start to finish. Whether it’s native iOS development with SwiftUI or Android development using Kotlin or Java, I’m dedicated to building high-performing apps. I am a reliable Mobile developer for startups, enterprises, and innovative projects alike, bringing technical insight and creative problem-solving to every stage of development. 👉 Contact Me Reach out today for a Mobile App Developer consultation, and let’s discuss how to bring your app vision to life! 🛠️ Technologies & Tools Native iOS Development: Swift, SwiftUI, Objective-C, Core Data, Core Animation, XCTest Native Android Development: Java, Kotlin, Jetpack Compose, Room Database, Retrofit, Dagger, Coroutines Cross-Platform Development: Flutter, React Native (Dart, JavaScript) Backend Integration: Firebase, REST APIs, GraphQL, Node.js, Python, AWS, Azure, Google Cloud Databases: MySQL, PostgreSQL, MongoDB, Redis, Cassandra, Firestore, SQLite CI/CD & DevOps: GitHub Actions, GitLab CI, Jenkins, CircleCI, Docker, Kubernetes Testing & Automation: TDD, BDD, Unit Testing, XCTest, Espresso, Appium, Selenium, JUnit API & Payment Integration: REST, GraphQL, OAuth, Third-Party SDKs, Stripe, PayPal, Apple Pay, Google Pay 💪 Areas of Expertise I specialize as a Mobile App Developer in creating scalable mobile apps with microservices architecture and event-driven design that can handle high traffic. My apps are optimized for performance across iOS and Android platforms, ensuring the best user experience. 📱 Featured Projects Food & Retail Delivery Platforms: Real-time tracking, push notifications, and in-app payments. Social Media Apps: Chat, feeds, profiles, authentication, real-time updates. E-commerce & Marketplace Apps: Secure payments, commission systems, inventory management. Productivity Apps: Task and expense management apps using Flutter and React Native. 🌟 I turn ideas into market-ready apps as a professional Mobile developer, combining creativity with technical precision. Whether you need a native iOS app or a cross-platform solution, I provide complete Mobile App Development services from concept to launch. Let’s collaborate to make your app the next hit on the Apple App Store and Google Play Store! ⚡️ Updated portfolio: May 6, 2026

Senior Mobile Developer | Flutter & React Native Specialist 🚀 Architecting Scalable Mobile & Full-Stack Solutions Since 2014 💼 12+ Years of Engineering Excellence | Enterprise & Startup Scale ⚡ Hyper-Responsive Communication — Clear, Direct, and Action-Oriented Hi, I’m Sumanta. As a Senior Mobile Developer and Full-Stack Engineer, I specialise in building high-performance, cross-platform mobile applications and robust web ecosystems that scale seamlessly with your business growth. Over the past 12 years, I have partnered with startups and established enterprises worldwide to translate complex product visions into production-ready software. Whether you need a crisp MVP built from the ground up or a complex technical audit to optimize an existing app's performance and state management, I deliver future-ready code that performs flawlessly across devices. Core Capabilities ––––––––––––– -- Cross-Platform & Native Mobile Engineering -- Frameworks: Flutter, React Native (High-performance, single-codebase solutions) -- Native Development: iOS (Swift, Objective-C) & Android (Kotlin, Java) -- Optimization: Offline-first caching, real-time data synchronization, and advanced state management (Riverpod, BLoC, Redux). -- Advanced Features: AI integrations, secure digital wallets, and custom API/hardware interactions. Full-Stack Web Ecosystems & Architecture –––––––––––––––––––––––––––––––––– -- Modern Frontends: React, Next.js, and responsive web frameworks. -- Scalable Backends: Node.js (MERN/MEAN), Python (Django/Flask), and Laravel. -- APIs & Data: Secure RESTful & GraphQL API design, Firebase, and Firestore integration. -- Content Management: Headless CMS architectures and custom WordPress solutions. Why Clients Partner With Me ––––––––––––––––––––––––– -- Architectural Integrity: I don't just write code; I design clean, maintainable software architectures that your team can scale for years to come. -- Transparent Communication: You will always know exactly where the project stands. I prioritize proactive updates and fast, 30-minute response windows. -- Product-Minded Approach: I look at your project through a business lens, ensuring the technical execution perfectly supports your user experience and retention goals. -- End-to-End Reliability: From deep technical discovery and initial build-ready designs to post-launch support and performance tuning, I am dedicated to your long-term success. Let's build an application that drives your business forward. Click the "Invite to Job" or "Message" button above, and let’s discuss your technical goals.