✅ 12+ Years in Development ✅ 100% Job Success Over 10 years ✅ 100% Customer Satisfaction ✅ Top 1% Upwork Talent Hi, I'm Umar, an expert-vetted Full-stack engineer having expertise in React, Next.js, Node.js, Angular, Python, React Native and SQL/NoSQL. I have a solid background in technologies such as JavaScript (ES6, ES7, Ajax, JSON, XML) and its frameworks such as Node.js, Express.js and for the front-end I have used React.js, Angular.js and Vue.js as well as Typescript both for frontend and backend development. I have great skills in following - Full Stack Development ( HTML, CSS, JS, Bootstrap, MySQL, NodeJs, React, Redux) - Mobile UI Design and Prototyping ( Sketch ) - XML and JSON Parsing - API Integration ( Alamofire ) - CoreData and Realm - Source Control Systems like Github, Bitbucket and Tower - Third-party SDKs' integration ( Cocoapods ) - Facebook, Twitter and Gmail API integration - Twilio API integration ( SMS and Programmable Video Chat ) - Familiarity with Management Tools like Trello, GitHub and Jira - Adobe Photoshop and Illustrator - Graph API ( Facebook Public data fetching like images, feeds and bio) - Google Maps Integration - Google Placepicker Integration

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.

🚀 I build production-grade AI apps that actually ship on the App Store — not prototypes that die in TestFlight. 100% Job Success across 43 projects, 2,233 hours, and $60K+ delivered on Upwork. Most recent: a full end-to-end AI skincare platform live on the Japan App Store — built solo from Figma to launch. 📱 React Native app (iOS & Android): AI face scan, real-time voice chat via OpenAI Realtime API + WebRTC, skincare routine builder, Stripe + RevenueCat subscriptions, Google Maps clinic finder. ⚙️ FastAPI backend: 20+ API route groups, JWT auth, RAG-powered recommendation engine (LangChain + Pinecone), Stripe payment processing. 🧠 AI image analysis microservices: dual-mode skin analysis pipeline combining MediaPipe / OpenCV computer vision AND GPT-4 Vision, with async Celery job queue and S3 storage. What I do, end-to-end: ✅ AI / LLM: OpenAI / Anthropic / LangChain / RAG (Pinecone) / Realtime Voice AI / Computer Vision ✅ Mobile: React Native (Expo) / iOS / Android / Stripe / RevenueCat / In-App Purchase / Push ✅ Backend for AI: FastAPI / NestJS / PostgreSQL / Vector DBs / Celery ✅ Infrastructure: AWS / Docker / Redis / CI/CD I work best with founders and product teams who need an engineer who can take an AI idea from Figma to App Store solo — including the LLM/RAG/agent layer, payments, and infra — without hand-holding. If your project has an AI component (chatbot, RAG, face analysis, voice, agent workflow) and a real ship date, message me with the rough scope. I usually reply within a few hours and can offer a 1–3 day free pilot so we can validate fit before committing to the full build.

Most mobile app projects fail not because of bad code, but because 𝗱𝗲𝘀𝗶𝗴𝗻 𝗮𝗻𝗱 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗱𝗼𝗻’𝘁 𝘁𝗮𝗹𝗸 𝘁𝗼 𝗲𝗮𝗰𝗵 𝗼𝘁𝗵𝗲𝗿. 𝗧𝗵𝗮𝘁’𝘀 𝘁𝗵𝗲 𝗴𝗮𝗽 𝗜 𝗳𝗶𝗹𝗹. With extensive experience as 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿, I handle both sides — 𝗱𝗲𝘀𝗶𝗴𝗻𝗶𝗻𝗴 𝘁𝗵𝗲 𝗨𝗜/𝗨𝗫 𝗶𝗻 𝗙𝗶𝗴𝗺𝗮/ 𝗔𝗱𝗼𝗯𝗲 𝗣𝗵𝗼𝘁𝗼𝘀𝗵𝗼𝗽/ 𝗜𝗹𝗹𝘂𝘀𝘁𝗿𝗮𝘁𝗼𝗿 𝗮𝗻𝗱 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝘁𝗵𝗲 𝗮𝗰𝘁𝘂𝗮𝗹 𝗮𝗽𝗽 𝗶𝗻 𝗦𝘄𝗶𝗳𝘁, 𝗞𝗼𝘁𝗹𝗶𝗻, 𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲, 𝗼𝗿 𝗙𝗹𝘂𝘁𝘁𝗲𝗿 𝗼𝗿 𝘂𝘀𝗶𝗻𝗴 𝗔𝗜 𝗧𝗼𝗼𝗹𝘀 𝗹𝗶𝗸𝗲 𝗖𝗹𝗮𝘂𝗱𝗲, 𝗚𝗶𝘁𝗛𝘂𝗯 𝗖𝗼-𝗣𝗶𝗹𝗼𝘁/ 𝗖𝘂𝗿𝘀𝗼𝗿 — so your project moves faster, stays consistent, and doesn’t get lost in translation between a designer and a developer. ━━ 𝗗𝗲𝘀𝗶𝗴𝗻 𝗧𝗵𝗮𝘁 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿𝘀 𝗖𝗮𝗻 𝗔𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝗕𝘂𝗶𝗹𝗱 ━━ On the design side, I create wireframes, interactive prototypes, and high-fidelity mockups that are grounded in real development constraints — not just pretty screens that fall apart when a developer tries to build them. 𝗢𝗻 𝘁𝗵𝗲 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝘀𝗶𝗱𝗲, 𝗜 𝗯𝘂𝗶𝗹𝗱 𝗻𝗮𝘁𝗶𝘃𝗲 𝗶𝗢𝗦 𝗮𝗽𝗽𝘀 (𝗦𝘄𝗶𝗳𝘁, 𝗦𝘄𝗶𝗳𝘁𝗨𝗜), 𝗻𝗮𝘁𝗶𝘃𝗲 𝗔𝗻𝗱𝗿𝗼𝗶𝗱 𝗮𝗽𝗽𝘀 (𝗞𝗼𝘁𝗹𝗶𝗻, 𝗝𝗮𝘃𝗮), 𝗮𝗻𝗱 𝗰𝗿𝗼𝘀𝘀-𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺 𝗮𝗽𝗽𝘀 (𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲, 𝗙𝗹𝘂𝘁𝘁𝗲𝗿) with clean architecture that scales as your user base grows. ━━ 𝗔𝗜-𝗣𝗼𝘄𝗲𝗿𝗲𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 – 𝗙𝗮𝘀𝘁𝗲𝗿, 𝗖𝗹𝗲𝗮𝗻𝗲𝗿, 𝗦𝗺𝗮𝗿𝘁𝗲𝗿 ━━ What sets my workflow apart is how I integrate AI tools across every stage of development: ▸ Claude AI — Architecture planning, code reviews, and complex problem-solving ▸ Cursor AI — Intelligent code generation and real-time refactoring that catches issues before they become bugs ▸ GitHub Copilot — Accelerates repetitive coding tasks so I spend more time on the logic that matters ▸ ChatGPT & OpenAI APIs — Prototyping conversational features, generating test cases, and exploring edge cases faster than manual testing ▸ Replit — Rapid prototypes and proof-of-concepts that clients can interact with before we commit to full development This isn’t about replacing craftsmanship with shortcuts. It’s about delivering your MVP faster, catching bugs earlier, writing cleaner code, and keeping your budget predictable. ━━ 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗖𝗮𝗽𝗮𝗯𝗶𝗹𝗶𝘁𝘆 – 𝗢𝗻𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿, 𝗖𝗼𝗺𝗽𝗹𝗲𝘁𝗲 𝗣𝗿𝗼𝗱𝘂𝗰𝘁 ━━ The backend? Covered. I work with 𝗡𝗼𝗱𝗲.𝗷𝘀, 𝗟𝗮𝗿𝗮𝘃𝗲𝗹, 𝗙𝗶𝗿𝗲𝗯𝗮𝘀𝗲, 𝗮𝗻𝗱 𝗥𝗘𝗦𝗧 𝗔𝗣𝗜𝘀 to power the apps I build. Need an admin panel or web dashboard alongside your mobile app? I build those in 𝗥𝗲𝗮𝗰𝘁.𝗷𝘀 𝗮𝗻𝗱 𝗡𝗲𝘅𝘁.𝗷𝘀. 𝗧𝗵𝗲 𝗴𝗼𝗮𝗹 𝗶𝘀 𝗮𝗹𝘄𝗮𝘆𝘀 𝗼𝗻𝗲 𝗽𝗲𝗿𝘀𝗼𝗻 𝘄𝗵𝗼 𝘂𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝘀 𝘆𝗼𝘂𝗿 𝗳𝘂𝗹𝗹 𝗽𝗿𝗼𝗱𝘂𝗰𝘁 — 𝗻𝗼𝘁 𝗳𝗶𝘃𝗲 𝗳𝗿𝗲𝗲𝗹𝗮𝗻𝗰𝗲𝗿𝘀 𝘄𝗵𝗼 𝗲𝗮𝗰𝗵 𝗸𝗻𝗼𝘄 𝗮 𝗽𝗶𝗲𝗰𝗲 𝗼𝗳 𝗶𝘁. ━━ 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 & 𝗔𝗽𝗽 𝗧𝘆𝗽𝗲𝘀 𝗜’𝘃𝗲 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝗲𝗱 ━━ I’ve delivered apps across 𝗵𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲, 𝗲-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲, 𝗼𝗻-𝗱𝗲𝗺𝗮𝗻𝗱 𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀, 𝘀𝗼𝗰𝗶𝗮𝗹 𝗻𝗲𝘁𝘄𝗼𝗿𝗸𝗶𝗻𝗴, 𝗳𝗶𝗻𝘁𝗲𝗰𝗵, 𝗮𝗻𝗱 𝗲𝗱𝘂𝗰𝗮𝘁𝗶𝗼𝗻 — from early-stage MVPs to mature products with complex feature sets. Whether you have a napkin sketch or a 40-page spec document, I can take it from concept to App Store and Play Store. ━━ 𝗟𝗲𝘁’𝘀 𝗕𝘂𝗶𝗹𝗱 𝗦𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗚𝗿𝗲𝗮𝘁 ━━ If you’re looking for someone who designs thoughtfully, codes solidly, leverages AI intelligently, and actually cares about shipping a product your users will love — send me a message. I’d love to hear about your project. Renu Keyword: Mobile App Developer, Full-Stack Mobile Developer, Senior Mobile App Developer, iOS App Developer, Android App Developer, Native App Development, Hybrid App Development, Cross-Platform App Development, React Native Developer, Flutter Developer, Dart, Swift, SwiftUI, Kotlin, Java, Mobile UI/UX Design, Mobile App Architecture, Clean Architecture, MVVM, Scalable Mobile Apps, High-Performance Mobile Apps, Figma, Adobe Photoshop, Wireframing, Prototyping, Design Systems, Motion UI, Micro-Interactions, Particle-Based UI Effects, Firebase, Firestore, Firebase Authentication, Firebase Cloud Functions, Push Notifications, Node.js, Express.js, Laravel, REST API Integration, Third-Party API Integration, Cloud-Based Mobile Apps, Admin Dashboards, React.js, Backend Development, API Development, AI-Powered Mobile Apps, AI-Assisted App Development, AI-Driven UI/UX, Intelligent Animations, AI-Enabled MVP Development, Automation-Driven Development, Code Optimization, Debugging, Performance Optimization, App Security, App Testing, QA Testing, CI/CD, App Store Deployment, Play Store Deployment, App Maintenance, Feature Enhancements, Git, GitHub, GitLab, Version Control, Agile Development, Scrum, Healthcare Mobile Apps, E-commerce Mobile Apps, On-Demand Apps, Delivery Apps, Dating Apps, Social Networking Apps, Replit, GitHub Copilot, ChatGPT, OpenAI, Cursor AI, Postman

🌟🌟🌟🌟🌟 - "I wouldn't recommend Hasan, because I wouldn't want others to take his time"- my awesome Upwork client If you are looking to create exceptional user experiences through Mobile applications then you're in the right place. With 5+ years of experience in React Native development, I have worked closely with a variety of clients from renowned MNC's to bootstrap start-ups to deliver results that meet business objectives and exceed user expectations. What you can expect from me: ✅ Clear & timely communication: I will respond promptly to all messages and keep you informed throughout the project ✅ High-quality work: I am committed to delivering work that meets or exceeds your expectations and meets all requirements. ✅ Professionalism: I will conduct myself with professionalism and respect at all times, and will be proactive in identifying and addressing any issues that arise. ✅ Attention to detail: I will carefully review all work to ensure that it is error-free and meets all specifications. ✅ Collaborative approach: I am open to feedback and will work with you to make any necessary revisions or adjustments to ensure that the final product meets your needs. When it comes to my set of expertise I am primarily a Mobile app developer, specializing in React Native (CLI and Expo). I have created and improved multiple successful applications for clients in areas of health tracking, Accounts Management, Fintech, Distribution Management, Recruitment, lifestyle, and e-commerce. Here's how I can help you: 🔷 Building an app from ideation to MVP and beyond 🔷 Revamping, debugging and updating existing applications that needs quick fixes or an idea to scale 🔷 Integrate new or existing applications with popular back-ends like Firebase or API's like RESTful, GraphQL 🔷 Consult on feature possibilities, App Store/Google Play guidelines, and monetization strategies 🔷 Proficient in E2E (End-to-End) testing, unit testing, and code reviews to ensure high-quality deliverables & low margin for error 🔷 Creating integrations of BLE-enabled (Bluetooth Low Energy) devices such as printers, Stripe terminals and smartwatches (Apple Watch, Fitbit) 🔷 Develop Apps using best practices which ensures optimal app performance & total app size Through my work I have gotten a chance to collaborate with and learn from the experiences of some of the most talented professionals from across the globe and look forward to instilling the insights I have gained on our next project. Robust technology and business experience combine for strong project outcomes no matter the size. I welcome discussing your projects and helping you find success!

Hello, I have delivered 500+ web and mobile projects, helping businesses build scalable, secure, and high-performance digital solutions. I specialize in eCommerce platforms, CMS websites, and cross-platform mobile applications focused on long-term growth. ✅ Services I Provide: • End-to-end store setup, optimization, and hosting support • Custom feature development and ongoing improvements for web and mobile • Smooth and secure platform migrations without downtime • React Native/flutter app development for both iOS and Android • Integration of APIs and payment gateways including PayPal, Stripe, and Razorpay ✅ Technical Skill Set: • E-Commerce Platforms: Shopify, CS-Cart, WooCommerce, Magento, PrestaShop, OpenCart •Complete eCommerce store setup, optimization, and hosting. •Custom web and mobile feature development. •Secure platform migrations with zero downtime. •Cross-platform iOS & Android app development. •API and payment gateway integration (PayPal, Stripe, Razorpay). • CMS Solutions: WordPress, Wild Apricot, Squarespace with custom development and SEO • Technology Stack: React.js, Vue.js, Angular, Node.js, python, Laravel, PHP, MySQL, MongoDB ✅ CS-Cart Services: • Full store setup from scratch • Multi-vendor marketplace setup & customization • Custom theme design with responsive, mobile-first UI/UX • Add-on/module development & configuration • Version upgrades & migrations • Third-party integrations (CRMs, ERPs, Payment Gateways, marketing tools) • Maintenance, support & bug fixes • SEO setup & Google Analytics integration ✅ Mobile App Development (Android, iOS, React Native, Flutter) • UI/UX design for mobile applications • eCommerce app development with CS-Cart integration • API development, backend integration & performance optimization • App deployment on Google Play Store & Apple App Store including bug fixing ✅ 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 ✅ AI Development & Automation • AI chatbots and virtual assistants for customer support and conversational commerce • Smart vendor dashboards with analytics and marketplace insights • Webhook setup and automated workflow development • OpenAI / GPT API integration for web, mobile, and business platforms • AI-powered dashboards, reporting, and business forecasting tools • Automated reports with easy-to-understand natural language summaries • RAG pipelines and LLM-based decision-making workflows • Prompt engineering and model fine-tuning for better AI outputs • API-based AI integrations with third-party tools and platforms

Need an AI-powered mobile app shipped to the App Store in weeks, not months? You'll get a production-ready React Native & Expo app with AI integration and real monetization built in — so you launch fast and start earning from day one. I help startups, founders, and SaaS businesses turn ideas into revenue-generating iOS and Android apps using React Native, Expo, and LLM APIs (OpenAI, Claude, Gemini). Clean TypeScript, scalable architecture, cross-platform performance — not just a demo that looks nice in Figma. ⭐⭐⭐⭐⭐ "Very professional delivery on time and quality work. Highly recommend." — Recent Client What I Build ✅ AI-Powered Mobile Apps — AI chatbots, voice AI, OCR, LLM integrations, prompt engineering ✅ SaaS & Subscription Apps — paywalls, free trials, recurring revenue with RevenueCat, Superwall, Stripe & In-App Purchases ✅ Startup MVPs — idea to App Store & Google Play in weeks using Expo EAS Build & Submit ✅ Cross-Platform iOS & Android Apps — one clean codebase, native-level performance, production-grade quality ✅ Real-Time Apps — push notifications (FCM, OneSignal, Expo Notifications), messaging, deep linking, WebSockets Tech Stack ✅ Mobile: React Native, Expo, Expo Router, TypeScript, Reanimated, React Navigation ✅ State Management: Redux, Redux Toolkit, Zustand, React Query, Context API ✅ Backend & Database: Node.js, Firebase, Supabase, PostgreSQL, MongoDB, REST APIs, GraphQL ✅ AI & LLMs: OpenAI API, Claude API, Gemini, LangChain, RAG, Voice AI (Whisper, Deepgram) ✅ Monetization: RevenueCat, Superwall, Stripe, Apple Pay, Google Pay, In-App Purchases ✅ Deployment: Xcode, TestFlight, App Store Connect, Play Console, Expo EAS, OTA Updates, CI/CD, Fastlane Why Clients Hire Me ✅ 4+ years of React Native & Expo development for startups worldwide ✅ 20+ cross-platform mobile apps shipped to App Store and Google Play ✅ AI-accelerated delivery using Cursor, Claude Code & GitHub Copilot — faster ship times, same code quality ✅ Scalable, clean architecture — your app stays fast as it grows ✅ Store compliance expertise — proven track record of App Store and Google Play approvals ✅ 0–4 hour response times with daily updates How I Work ✅ Free 30-min discovery call to align on goals, scope, and timeline ✅ Clear proposal with milestones and fixed delivery dates ✅ Daily updates — you always know what's shipping next ✅ App Store & Google Play submission included ✅ Post-launch support for scaling and new features Types of Apps I Ship ✅ AI chatbots, voice assistants & LLM-powered apps ✅ Subscription-based SaaS mobile apps ✅ eCommerce & marketplace platforms ✅ Booking & on-demand service apps ✅ Social, dating & community apps ✅ Health, fitness & wellness apps ✅ Real-time chat & messaging apps Let's Build Your App If you need a React Native developer who ships production-ready apps with AI and real monetization built in , let's talk. 📩 Send me a message with your project details. I reply within 4 hours and offer a free 30-minute strategy call to map out your fastest path to launch.

If your mobile application needs better performance, scalability, modern architecture, or a reliable development partner to turn your idea into a successful product, I can help. I am a Top Rated Plus Mobile App Developer (Top 3% on Upwork) with 8+ years of experience building high-performance native and cross-platform mobile applications for startups, scale-ups, and enterprises. With 500+ successfully completed projects, a 100% Job Success Score, and 7000+ personal Upwork hours, I specialize in transforming ideas into scalable mobile products that improve user experience, engagement, and business growth. 📱 What I Can Help You Build ✅ Native iOS Applications ✅ Native Android Applications ✅ Cross-Platform Mobile Apps ✅ AI-Powered Mobile Applications ✅ SaaS Mobile Applications ✅ MVP Development & Product Prototyping ✅ E-Commerce & Marketplace Apps ✅ On-Demand Service Applications ✅ Healthcare & Fitness Apps ✅ FinTech Applications ✅ Social Networking Apps ✅ Real-Time Chat & Video Calling Apps ✅ Location-Based Applications ✅ IoT & Connected Device Applications ✅ Custom Backend Systems & APIs ⭐ Mobile Development Expertise Cross-Platform Development • Flutter • React Native Native Mobile Development • Swift (iOS) • Kotlin (Android) • Java (Android) ⚙️ Backend & API Development • Node.js • NestJS • Laravel • PHP • Express.js Building secure, scalable backend systems, REST APIs, real-time services, and cloud-connected mobile solutions. ☁️ Database & Cloud Technologies • Firebase • MongoDB • MySQL • PostgreSQL • DynamoDB 🔗 Third-Party Integrations • Payment Gateways (Stripe, Razorpay, PayPal) • Twilio (SMS, Voice & Video) • Google Maps & Location Services • Apple Maps • Push Notifications • REST APIs • WebSockets • Social Login Integrations 🤖 AI & Automation Expertise • OpenAI GPT Integration • Claude AI Integration • AI Chat Assistants • AI-Powered Mobile Features • Workflow Automation • Recommendation Systems • Smart Search Solutions • Generative AI Applications 🚀 Industries I Have Worked With • Healthcare & Fitness • E-Commerce & Marketplaces • FinTech • Real Estate • Education & E-Learning • Food Delivery • Transportation & Logistics • Travel & Hospitality • Social Networking • Wellness & Meditation • On-Demand Services 🏆 Key Achievements • Top Rated Plus Freelancer (Top 3% on Upwork) • 100% Job Success Score • 500+ Successfully Completed Projects • 7000+ Personal Upwork Hours • 100,000+ Agency Development Hours • Long-Term Partnerships with Startups & Enterprises 🎯 Why Clients Choose Me ✔ Strong Mobile-First Development Approach ✔ Clean, Scalable & Maintainable Architecture ✔ Pixel-Perfect UI Implementation ✔ Native & Cross-Platform Expertise ✔ Agile Scrum Development Process ✔ Transparent Communication ✔ Reliable Delivery & Long-Term Support 🎁 Additional Benefits • 6 Months Free Maintenance After Launch • Complete Source Code Ownership • GitHub-Based Development Workflow • Regular Sprint Updates • App Store & Google Play Store Deployment • Compliance with Apple & Google Guidelines I don't just build mobile apps - I help businesses create reliable, scalable, and user-focused digital products that are built for long-term success. 📩 Let's discuss your idea. I offer a FREE 15–30 minute consultation to understand your requirements, recommend the right technology approach, and provide practical guidance before development begins.

I build web and mobile products that actually ship; fast, clean, and with AI built in. Full-stack developer (React.js, Next.js, Node, React Native) specializing in MVPs, AI apps & automation. 100% Job Success · 3,800+ hours on Upwork. If you've got an idea, a half-finished app, or a product that needs to scale, I take it from where it is to launched, without the hand-holding. WHAT I CAN BUILD FOR YOU: • Idea → MVP: a working, launch-ready product in about 30 days • AI Automation: chatbots, AI agents, RAG "chat with your data," and workflow automation (OpenAI, Claude, LangChain, n8n) • SaaS, Marketplace, & admin platforms: multi-tenant dashboards, role-based access, reporting • Mobile apps: React Native for iOS + Android, in-app subscriptions, full store launch RECENTLY SHIPPED (real, live products): • Ra8m POS: a solution designed for modern businesses that need a fast, reliable, and feature-rich system. • Ant DataGain: process a raw audio and video data across 100+ languages with AI-driven transcription with expert human review. • InformedIQ: an AI income/identity verification platform used by US lenders • Prepace: AI-powered Edu-Tech that supports SHSAT, SSAT, ISEE, HSPT, TACHS with full-length tests, adaptive practice, mistake-based learning. • Sparks Flow: an AI recruitment & compliance platform • JhaPay: a fintech wallet for US restaurants, live on iOS & Android. • Harrir: a scalable e-commerce platform. HOW I WORK: • Daily updates, weekly demos, and a clean GitHub pull-request workflow. Transparency, get skilled and experienced engineer, and on-time delivery. TECH STACKS: • Frontend: React, Next.js, TypeScript, Tailwind. • Mobile App: React Native (iOS and Android) • Backend: Node, NestJS, Express, Supabase, AWS • Data: PostgreSQL, MongoDB • AI/ML: Python/Langchain • AI models: ClaudeAI, OpenAI, n8n, RAG Let's build it, send me a message with what you're working on, and I'll reply with how I'd approach it: timeline, stack, and the first milestone. Best, Abhishek

Top Rated Plus Full-Stack Developer | Top 3% on Upwork | 2M+ users across products built (Mobile & Web Apps) With 15+ years of experience and 200+ mobile apps, AI-powered applications, and web solutions delivered worldwide, I founded IT Infonity - a team of dedicated experts with one mission: turning bold ideas into scalable, intelligent digital products that tell your story and strengthen your bottom line. A testament to the quality & impact of our work: the mobile apps and web solutions we've developed have collectively achieved 2M+ downloads and $250M+ in funding raised, reflecting strong user engagement, technical reliability, and real market success. Whether it's a complete product build, team augmentation, platform redesign, or a scalable MVP, We deliver the technical expertise, strategic thinking, and execution capability required to drive real business growth. 𝐁𝐨𝐨𝐤 𝐚 𝐂𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧 𝐓𝐨𝐝𝐚𝐲 Thinking about bringing an app to life? Skip months of guesswork. In one focused session, I'll walk you through exactly what it takes the real costs, realistic timelines, & the step-by-step process from idea to launch. No fluff, no sales pitch, just clarity from someone who's done this before. I'll cover: • Accurate development cost estimates • Realistic project timelines • The complete development process • Technology and platform recommendations • Common pitfalls to avoid • Best practices for launching successfully 𝐋𝐞𝐚𝐯𝐞 𝐭𝐡𝐞 𝐬𝐞𝐬𝐬𝐢𝐨𝐧 𝐰𝐢𝐭𝐡 𝐭𝐡𝐞 𝐜𝐥𝐚𝐫𝐢𝐭𝐲 𝐚𝐧𝐝 𝐜𝐨𝐧𝐟𝐢𝐝𝐞𝐧𝐜𝐞 𝐭𝐨 𝐦𝐨𝐯𝐞 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 𝐟𝐨𝐫𝐰𝐚𝐫𝐝 𝐰𝐡𝐞𝐭𝐡𝐞𝐫 𝐲𝐨𝐮'𝐫𝐞 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐲𝐨𝐮𝐫 𝐟𝐢𝐫𝐬𝐭 𝐚𝐩𝐩 𝐨𝐫 𝐫𝐞𝐟𝐢𝐧𝐢𝐧𝐠 𝐚𝐧 𝐞𝐱𝐢𝐬𝐭𝐢𝐧𝐠 𝐢𝐝𝐞𝐚. ⭐ 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤𝐬 ◉ Cross-Platform App Development: React Native | Flutter ◉ Native App Development: Swift | Kotlin | Java ◉ Frontend Development: React.js | Next.js | Angular | JavaScript | TypeScript | HTML5/CSS3 | Tailwind CSS | Bootstrap ◉ Backend Development: Node.js | Python | FastAPI | Django | Nest.js | PHP | Laravel ◉ Databases: MongoDB | PostgreSQL | MySQL | Firebase | Supabase | Microsoft SQL Server | SQLite | Vector Databases | Time-Series Databases ◉ CMS, E-Commerce, and Tools: WordPress | WooCommerce | Elementor | Divi | Shopify | Webflow | GHL | n8n ◉ AI & Automation: OpenAI | LangChain | AI Agents | Workflow Automation | RAG (Retrieval-Augmented Generation) | Vector Databases ◉ Cloud & DevOps: AWS | Docker | CI/CD | Vercel etc. ◉ API Integrations: OpenAI | Claude| REST APIs | GraphQL | Google/Apple Maps | Twilio | Plivo | Elevenlabs | VAPI | Stripe | PayPal | Razorpay | Firebase | Fedex & UPS | Auth APIs | Zapier | Make | Mux | CRM | EMR | EHR | Sales tools | Quickbooks | Sales tools | Billing tools | Marketing tools | Geolocation API | Web3 APIs etc. ⭐ 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞 ◉ Full project ownership — From your first idea through launch every stage, fully managed. ◉ Clean, production-ready code — Scalable architecture built to grow with your product. ◉ Transparent communication — Clear updates and fast response times you're never in the dark. ◉ Rigorous QA & testing — Thorough quality assurance before anything ships. ◉ Post-launch support & maintenance — 6 months free support after go-live. ◉ Secure, compliance-ready development — Built to meet GDPR, HIPAA, and age-restricted system requirements from day one. ⭐ 𝐓𝐫𝐮𝐬𝐭𝐞𝐝 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲 𝐏𝐚𝐫𝐭𝐧𝐞𝐫 𝐀𝐜𝐫𝐨𝐬𝐬 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 ◉ Healthcare ◉ Fitness & Wellness ◉ FinTech ◉ Real Estate ◉ Event Planning & Booking ◉ Food and Delivery ◉ Grocery ◉ Bakery, Cafe & Restaurant Management ◉ Social Networking and Dating ◉ Salon Booking & Beauty Service ◉ E-Commerce Marketplace ◉ Education ◉ Travel & Hospitality ◉ Logistics & Delivery ◉ Job Portals ◉ Sports & Entertainment Apps ◉ Blockchain 𝐑𝐞𝐚𝐝𝐲 𝐭𝐨 𝐁𝐮𝐢𝐥𝐝 𝐘𝐨𝐮𝐫 𝐀𝐩𝐩 𝐰𝐢𝐭𝐡 𝐂𝐨𝐧𝐟𝐢𝐝𝐞𝐧𝐜𝐞? 𝐋𝐞𝐭'𝐬 𝐒𝐭𝐚𝐫𝐭 𝐭𝐡𝐞 𝐂𝐨𝐧𝐯𝐞𝐫𝐬𝐚𝐭𝐢𝐨𝐧. Mobile App Development, AI Mobile App Development, Flutter Developer, React Native Developer, App Developer, Native App Developer, Web App Developer, Custom Web App, AI-enable Platforms, Android App Developer, iphone/ipad App Developer, iOS Developer, Full Stack Developer, Mobile App Redesign, Food Delivery, Uber like App, Grocery Delivery, AI Healthcare App, AI powered Fitness App, Taxi App, Pickup and delivery App, Fleet management system, Delivery management system, Courier Delivery App, B2B Payments, Ecommerce App, Salon Booking App, Logistics App, Real Estate App , School Management Software, Edtech, Video Streaming App, Social Media App, Dating App, Fantasy App, ERP Software for Project Managers, ERP for Construction, CRM Software for Sales, Fantasy Golf App, Agriculture App, AI TreeMatch App, Lawyer App, Astrology App, Traffic Management System, FinTech Software and App, Web 3 Ecommerce marketplace, AI transcription, AI Supply Chain, AI Financial Assistant, AI Legal Assistant, SaaS Developer