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🚀 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞𝐝 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐰𝐢𝐭𝐡 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐢𝐧 𝐢𝐎𝐒, 𝐀𝐧𝐝𝐫𝐨𝐢𝐝, 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞, 𝐚𝐧𝐝 𝐌𝐨𝐫𝐞! 🚀 Greetings! I'm a versatile full stack developer with a wealth of experience in crafting robust and innovative solutions for a variety of platforms. With a focus on both native and cross-platform development, I bring expertise in a wide range of technologies to the table. 📱 𝗠𝗼𝗯𝗶𝗹𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: From iOS to Android, including Watches, TVs and Tablets, I specialize in native development using Objective C, Swift, Kotlin, RxJAVA, JAVA, and the Android SDK. Additionally, I excel in cross-platform development using React Native and Flutter, allowing for efficient and seamless deployment across multiple platforms. 💻 𝗪𝗲𝗯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: I'm proficient in a multitude of web development technologies, including AngularJS, ReactJS, NextJS, Vue.JS, NodeJS, PHP, MySQL, Laravel, and Firebase. Whether it's building interactive user interfaces, robust backend systems, or full-fledged web applications, I have the skills and expertise to deliver high-quality solutions tailored to your needs. 🔗 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗮𝗻𝗱 𝗖𝗿𝘆𝗽𝘁𝗼𝗰𝘂𝗿𝗿𝗲𝗻𝗰𝘆: In addition to traditional development stacks, I have a deep understanding of blockchain technology and cryptocurrencies. I specialize in blockchain development and have experience working with platforms such as Ethereum, Binance Smart Chain, Avalanche, Solana, and Matic. Whether it's developing decentralized applications (DApps), integrating NFT functionality, or exploring the possibilities of the metaverse, I'm well-equipped to handle a wide range of blockchain-related projects. 💡 𝙒𝙝𝙮 𝘾𝙝𝙤𝙤𝙨𝙚 𝙈𝙚: 𝟭. 𝗩𝗲𝗿𝘀𝗮𝘁𝗶𝗹𝗶𝘁𝘆: With proficiency in a diverse range of technologies and platforms, I offer a one-stop solution for all your development needs. 𝟮. 𝗜𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝗼𝗻: I stay up-to-date with the latest trends and technologies, allowing me to incorporate cutting-edge solutions into your projects. 𝟯. 𝗥𝗲𝗹𝗶𝗮𝗯𝗶𝗹𝗶𝘁𝘆: With years of experience and a proven track record of successful projects, you can trust me to deliver results that exceed your expectations. 𝟰. 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝗼𝗻: I believe in open communication and collaboration, working closely with clients to understand their requirements and ensure that their vision is brought to life. Let's work together to bring your ideas to fruition and create innovative solutions that propel your business forward. 𝙁𝙚𝙚𝙡 𝙛𝙧𝙚𝙚 𝙩𝙤 𝙧𝙚𝙖𝙘𝙝 𝙤𝙪𝙩, 𝙖𝙣𝙙 𝙡𝙚𝙩'𝙨 𝙙𝙞𝙨𝙘𝙪𝙨𝙨 𝙝𝙤𝙬 𝙬𝙚 𝙘𝙖𝙣 𝙩𝙪𝙧𝙣 𝙮𝙤𝙪𝙧 𝙫𝙞𝙨𝙞𝙤𝙣 𝙞𝙣𝙩𝙤 𝙧𝙚𝙖𝙡𝙞𝙩𝙮!

WHO I AM 7+ years of production mobile development. 5x world record holder in tech, including a Guinness World Record. 2025 Misk Global Tech Award winner. Senior Software Engineer at Microsoft on the Teams platform 300 million daily users by day. Most mobile apps fail not because of bad ideas, but bad engineering. I build iOS and Android apps that are fast, maintainable, and built to scale whether you're launching your first MVP or fixing what a previous team left behind. THE PROBLEM I SOLVE I ship products that scale. You are not hiring a coder, you are hiring someone who will take ownership, deliver on time, and leave you with code your team can actually maintain. I have built healthcare systems for hospitals, enterprise apps at Microsoft used by 300 million daily users, and production apps that handle real payment flows and real data. I know what it takes to ship software that does not break when it matters. That is the difference between a freelancer and a partner. I am the latter. SELECTED WORK ORRCA, live healthcare platform across 4 Vancouver hospitals. Manages patient records, clinical workflows, and real-time data sync with HIPAA compliance. Built with React Native and a secure Supabase backend. Kinetix, iOS and Android physiotherapy app for ACL injury rehabilitation. HealthKit integration, video-guided exercises, offline functionality, and progress tracking. Built with Flutter. PawMatch, pet services marketplace connecting sitters with pet owners. Swipe-based matching, real-time messaging, Stripe payment processing. Flutter and marketplace architecture at scale. Beauty Appointment App, progressive web app for beauty appointment booking. Cross-platform mobile and web, optimized for conversion. FlutterFlow with real-time backend sync. Microsoft Teams, enterprise mobile app, 300 million daily users. WHAT I BUILD React Native and Flutter apps for iOS and Android Cross-platform mobile app development and MVP delivery Gamification systems — XP engines, streaks, quests, leaderboards BLE hardware and IoT device integrations Stripe Connect with marketplace payments, subscriptions and split payouts Supabase and Firebase backends with row-level security AI and ChatGPT feature integrations HealthKit and Health Connect integrations Full App Store and Google Play submission and compliance Admin dashboards and web applications Node.js backend and REST API development TECH STACK Mobile: React Native, Flutter, Expo, iOS, Android Backend: Supabase, Firebase, Node.js, REST API, AWS Payments: Stripe Connect, in-app purchases, subscriptions AI: OpenAI, ChatGPT integration, AI-powered mobile apps Health: HealthKit, Health Connect, BLE devices INDUSTRIES I HAVE BUILT FOR Healthcare and medical platforms Enterprise software and SaaS Consumer health and wearables Fintech and payments Marketplace and two-sided platforms Community and social platforms Fitness and wellness apps Education and e-learning WHY I AM DIFFERENT Ownership Mentality. I do not just write code, I care about your success. Your problem becomes my problem. I will not ship something unless I would be comfortable using it myself. Clarity and Predictability. NDA before sensitive discussion. Scope and milestones locked before any code. Weekly check-ins. GitHub and Supabase access on Day 1. You own everything from the start. No surprises. Selective Not Desperate. I turn down projects that are not the right fit. This means you get my full focus, not a divided contractor juggling 20 clients. Enterprise Standards at Freelance Speed. Microsoft-quality code. Clean architecture. Security baked in. Performance optimized from Day 1. WHO I WORK BEST WITH Funded startups, growing companies, and enterprises who need a senior mobile app developer, not a code monkey. If you have a spec, a timeline, and a real budget, we will work well together. HOW WE WORK TOGETHER Step 1. Message me with your scope. I will respond within 24 hours and tell you if I am the right fit. Step 2. Alignment call. We discuss your product, timeline, and expectations. No surprises. Step 3. Scope locked. Milestones, deliverables, and timeline in writing before any code. Step 4. Day 1 ownership. GitHub, Supabase, and all credentials transferred to you. You own the code from the start. Step 5. Weekly check-ins. Video sync to keep you updated. No ghosting, no excuses. If your project is serious, message me with your scope. I will tell you within 24 hours if I am the right fit. If I say yes, you have my full commitment. Best Rayyan Siddiqui

I help founders ship AI-powered mobile apps, with LLM integration, voice AI, automation, and SaaS backends. Top Rated | 100% Job Success | $8K+ earned | 326+ hours billed ═══════════════════════════════════════ WHAT I BUILD: AI MOBILE APPS (iOS & Android) ┌──────────────────────────────┐ → Flutter · React Native · Swift · Kotlin → LLM integration inside your app (GPT, Claude) → Voice AI agents that talk to users → RAG pipelines on your own data → Automation workflows triggered from mobile → SaaS platforms with mobile apps → Real-time sync, offline mode, push notifs └──────────────────────────────┘ WHAT I SPECIALIZE IN 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩𝐬 (iOS & Android): Flutter, React Native, Swift, Kotlin, FlutterFlow. Clean architecture, push notifications, offline mode, real-time sync, camera, location, biometric auth. 𝐀𝐈 & 𝐋𝐋𝐌 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 (Inside Mobile Apps): OpenAI GPT-4o, Anthropic Claude, LangChain, RAG, Pinecone. AI chatbots inside your app, RAG pipelines on your own data, 70% auto-resolution rate. 𝐕𝐨𝐢𝐜𝐞 𝐀𝐈 (For Mobile Apps): Twilio, Retell AI, Deepgram, Whisper, ElevenLabs. Voice agents that answer calls, speech-to-text, text-to-speech, 40% reduction in no-shows. 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 (n8n/Zapier/Make): n8n, Zapier, Make, Webhooks. Trigger workflows from your mobile app, connect to CRM/email/database, save 20+ hours/week. 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐂𝐥𝐨𝐮𝐝: Firebase, Supabase, PostgreSQL, Node.js, Python, FastAPI, Django, AWS. 𝐒𝐚𝐚𝐒 & 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬: React, Next.js, Stripe, RevenueCat. Full SaaS products with mobile apps, subscription billing, user management, admin dashboards. THE PROBLEMS I SOLVE → "I have an app idea but no technical co-founder" → I build your MVP in 3-4 weeks → "I want an AI chatbot inside my mobile app" → I integrate GPT or Claude natively → "I need voice AI to answer calls or book appointments" → I build voice agents that work 24/7 → "My team wastes 20+ hours on manual tasks" → I automate with n8n, Zapier, or Make → "I want a SaaS platform with a mobile app" → I build both web + mobile, full stack WHAT YOU GET ✅ AI-powered mobile app for iOS & Android ✅ LLM, voice AI, or automation whatever your app needs ✅ MVP in 3-4 weeks, delivered on time ✅ Clean code, scalable architecture ✅ Daily updates you test working builds every day ✅ Full support from idea to App Store launch ✅ Free technical advice no sales pitch INDUSTRIES 🔸 SaaS & Subscription Platforms 🔸 AI-Powered Mobile Apps 🔸 Startups & Founders 🔸 Fintech & Payment Apps 🔸 HealthTech & Wellness 🔸 Marketplaces & On-Demand Services 🔸 E-commerce & Retail MY TECH STACK (AI + Mobile Focused) MOBILE APPS: Flutter · FlutterFlow · React Native · Swift · SwiftUI · Kotlin · Java · iOS · Android AI & LLMs: OpenAI API (GPT-4, GPT-4o) · Claude API (Anthropic) · LangChain · LangGraph · RAG · Pinecone · Weaviate · Chroma VOICE AI: Deepgram · Whisper · ElevenLabs · Twilio · Retell AI · VAPI AUTOMATION: n8n · Zapier · Make · Webhooks · REST APIs, PandaDoc BACKEND: Python · FastAPI · Django · Node.js · Firebase · Supabase · PostgreSQL CLOUD & DEPLOYMENT: AWS (Lambda, EC2, S3, Bedrock) · Vercel · Railway · Docker PAYMENTS: Stripe · PayPal · In-app purchases (iOS · Android) ✌ SOUND LIKE A FIT? Message me with your mobile app idea. I'll reply within 4 hours with my honest technical opinion. No sales pitch, just real advice. Click "Hire Me" or send a message. — Malik ═══════════════════════════════════════ KEYWORDS: AI Mobile App Development · Flutter Developer · React Native Developer · LLM Integration · OpenAI API · Claude API · LangChain · RAG Implementation · Voice AI · Twilio · Deepgram · n8n Automation · Zapier · Make · SaaS Development · Mobile App MVP · FlutterFlow · Swift · Kotlin · iOS · Android · Chatbot Development · AI Agent · Automation Workflows · API Integration · Firebase · Supabase · PostgreSQL · Stripe · RevenueCat · Push Notifications · Offline-First · App Store Deployment · Google Play · Top Rated · 100% Job Success · Hybrid App Development · Android App Development · Dart · Firebase · Mobile App Development · Flutter · API Integration · Payment Gateway Integration · Android · iOS Development · iOS · Node.js · Mobile App Design · FlutterFlow · Mobile App · AI Development · AI App Development · Hybrid App · App Design · App Development · Flutter · iOS Development · API Integration · Dart · Mobile App Development · Hybrid App Development · Flutter Stack · API Development · Mobile App · Web Development · Mobile App Design · Cross-Device Compatibility · Node.js · AI Mobile App Development · AI App Development · FlutterFlow · Mobile App Development Consultation · Website to Mobile App Conversion · Mobile App Bug Fix · Firebase

I am a full-stack and mobile engineer who builds systems that hold up in production , not just in demos, 8+ years , 60+ apps shipped , 30+ live on App Store & Play Store. My edge is not the stack. It's the architecture mindset , modular code, clean API contracts, scalable cloud infrastructure, and CI/CD pipelines that let you ship fast without breaking things. 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈 𝐬𝐞𝐫𝐯𝐞𝐝: 🏥 Healthcare · 🛒 eCommerce · 🚚 Logistics · 📲 On-demand · 🏢 Enterprise SaaS · 💰 Fintech · 🎓 EdTech · 🏠 Real Estate · 🍔 Food & Restaurant · 🚗 Ride-hailing · 💪 Fitness & Wellness · 🔒 Cybersecurity · 🏗️ Construction & Field Service 📱 𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 ✅ Flutter (Dart) & React Native, production-grade cross-platform development ✅ Background geofencing · Real-time BLE sync · Offline-first architecture · Live location tracking ✅ State management (BLoC, Riverpod, Redux, MobX) · Push notifications · Deep linking ✅ Stripe · PayPal · In-app purchases · Google Maps · Firebase ✅ Real-time chat · WebSockets · Social auth (Google, Apple, Facebook) ✅ REST APIs · GraphQL · Third-party SDK integration 🌐 𝐖𝐞𝐛 & 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 ✅ Front-end: React.js · Next.js · Vue.js · TypeScript · Tailwind CSS ✅ Back-end: Node.js · NestJS · Express.js · FastAPI · Django · GraphQL ✅ Databases: PostgreSQL · MySQL · MongoDB · Firebase · Redis ✅ Cloud: AWS (EC2, S3, Lambda, RDS) · Google Cloud · Heroku ✅ Microservices · REST & GraphQL APIs · Serverless architecture ✅ CI/CD · Docker · Kubernetes · Git · Agile 𝐖𝐡𝐚𝐭 𝐲𝐨𝐮 𝐠𝐞𝐭: ✅ Clean, documented, handover-ready code ✅ Architecture explained, not hidden ✅ Communication that doesn't vanish mid-project 𝐌𝐞𝐬𝐬𝐚𝐠𝐞 𝐦𝐞 𝐰𝐢𝐭𝐡 𝐲𝐨𝐮𝐫 𝐛𝐫𝐢𝐞𝐟 , 𝐭𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐚𝐩𝐩𝐫𝐨𝐚𝐜𝐡 𝐛𝐚𝐜𝐤 𝐰𝐢𝐭𝐡𝐢𝐧 𝟐–𝟒 𝐡𝐨𝐮𝐫𝐬. 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬 Flutter Developer · React Native Developer · Full-Stack Engineer · Mobile App Development · Cross-Platform Development · Next.js · Node.js · NestJS · FastAPI · Django · REST API · GraphQL · API Integration · Firebase · AWS · Google Cloud · PostgreSQL · MongoDB · Redis · Docker · Kubernetes · CI/CD · TypeScript · BLoC · Riverpod · WebSockets · Microservices · Serverless · iOS · Android · App Store · Play Store

✨ 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.

As a Senior Full-Stack and AI Engineer with 14+ years of experience, I specialize in designing and building scalable web applications, cloud platforms, AI-powered automation systems, and high-performance APIs. I have extensive experience developing enterprise SaaS platforms, CRM/ERP systems, fintech applications, and AI-driven automation solutions using modern technologies such as Python, Node.js, Golang, Java, .NET, Ruby on Rails, React.js, and Next.js. I also work extensively with AI and automation frameworks, building intelligent workflows and LLM-powered applications using tools like LangChain, LangGraph, HuggingFace models, and n8n automation pipelines. Core Technical Expertise AI & Automation LLM integrations (OpenAI, Claude, HuggingFace) LangChain & LangGraph AI workflows Automation pipelines using n8n AI-powered SaaS platforms and content automation systems AI chatbots and intelligent agents Backend Development Python (FastAPI, Flask, Django) Node.js (REST APIs & microservices) Golang microservices Java (Spring Boot) .NET / ASP.NET Core Ruby on Rails Frontend Development React.js and Next.js TypeScript and modern JavaScript frameworks Angular Responsive UI development using Tailwind and Bootstrap Mobile Development React Native cross-platform mobile applications Blockchain Development Solidity smart contracts Ethereum and Web3.js integrations NFT and decentralized applications Cloud & DevOps AWS, Azure, and Google Cloud Docker, CI/CD pipelines Scalable microservices architecture Why Clients Hire Me ✔ 14+ years of professional development experience ✔ Expertise across AI, cloud, full-stack, and blockchain technologies ✔ Proven track record building enterprise SaaS platforms and scalable systems ✔ Strong focus on clean architecture, performance, and maintainable code ✔ Clear communication and reliable project delivery If you are looking for a senior engineer who can build scalable applications, AI-powered solutions, or modern SaaS platforms, I would be happy to discuss your project. Let's connect and bring your idea to life. Thanks, Hitesh Kanwar