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With over 15 years of experience in web and mobile application design and development, I am a seasoned Web Designer & Developer holding a Master's degree in Computer Science. My journey is marked by a 100% job completion rate and the prestigious "Top Rated Freelancer Plus" badge on Upwork, with over 14,000 logged hours and 300+ projects completed. I specialize in end-to-end development, from the initial concept to final testing and deployment. Whether you need a captivating landing page, a robust e-commerce store, or a fully customized web app, I bring extensive expertise in UI/UX design, front-end & back-end development, and CMS integration to deliver exceptional results. What I Can Do for You: Custom Website Design & Development: Crafting pixel-perfect, fast, and mobile-friendly sites. UI/UX Design: Creating modern, intuitive, responsive, and conversion-optimized interfaces. E-commerce Solutions: Expertise in Shopify, WooCommerce, Magento, and custom solutions. CMS Development: Proficient in WordPress, Webflow, and custom-built CMS platforms. Full-Stack Development: Skilled in React, Vue, Laravel, Node.js, and more. API Integrations: Seamless integration of payment gateways, third-party services, and automation tools. SEO & Performance Optimization: Enhancing site speed, security, and search engine visibility with full SEO compliance. Lead Conversion: Delivering a flawless user experience with compelling CTAs to maximize engagement and drive conversions. Payment Integration: Incorporating features like real-time chat, downloadable resources with lead capture, and Stripe payment integration. Premium Features Implementation: Integrating brand logos, video testimonials, Google reviews, dynamic blog pages, interactive forms, and a powerful lead-generation system with Mailchimp CRM. My approach is collaborative, aligning design and content with your vision while executing precise and detailed instructions to deliver a polished, professional website. Why Work With Me? Experienced & Reliable: A proven track record of building scalable, high-performing websites. User-Centered Approach: Focused on usability, engagement, and conversions. End-to-End Support: From concept to launch and ongoing maintenance. Deadline-Oriented: Respecting your time and always delivering on schedule. Key Skills: Enterprise-Level Experience: Collaborating with both start-ups and top-rated organizations to bring visions to reality. Timely Delivery: Ensuring projects are completed within the stipulated time frame. Project Discussion: Conducting preliminary meetings to understand projects in depth before development. Thorough Testing: Rigorous testing to ensure all tasks are completed without issues. Flexible Budget Considerations: Offering budget-friendly solutions tailored to client needs. When you're seeking a web and mobile app developer, I'm your go-to professional. I offer competitive pricing and a hassle-free process, keeping clients updated throughout and providing complete control over the project. Client Feedback: "Very reliable and responsive. The work completed was exactly what I was hoping for. Willing to go the extra mile to make sure everything is right. Timely and realistic about schedules and budgets. Highly recommended." “Shaoli was wonderful to work with. Her communication skills are fantastic and she has great ideas. I look forward to working with her again in the future!”

Highly Skilled Full Stack Developer Freelancer PHP Node Js JS, JQuery CSS 3 HTML 5 Bootstrap MYSQLi PhpMyadmin Data Manager

"Rayyan is a world-class 'best in class' mobile app developer. He is efficient, transparent, and has exceptional listening and reasoning skills. We will hire again." Client feedback Senior Software Engineer at Microsoft with 8+ years of experience building React Native and Flutter mobile apps. 5x world record holder in tech, including a Guinness World Record. 2025 Misk Global AI and Tech Award winner. On the Teams platform at Microsoft 300 million daily users. Most react and flutter mobile apps fail because of bad engineering, not bad ideas. I build React Native and Flutter apps for iOS and Android that are fast, maintainable, and built to scale and where it actually adds value, I integrate AI and automation into the product instead of bolting it on as a gimmick. AI automation and AI-powered mobile apps are core to what I do, along with most things coding. You're not hiring a coder. You're hiring someone who takes ownership, ships on time, and leaves your team with code they can actually maintain. I've built healthcare platforms live in hospitals, enterprise software at Microsoft used by 300 million people a day, and production apps handling real payments and real data. I know what it takes to ship something that doesn't break when it matters. That's the difference between a freelancer and a partner. I'm the latter. Some of what I've built: ORRCA — a live healthcare platform running across 4 Vancouver hospitals, managing patient records and clinical workflows with real-time sync and HIPAA compliance. React Native, Supabase backend. Kinetix — an iOS/Android physiotherapy app for ACL rehab, with HealthKit integration, video-guided exercises, and offline support. Built in Flutter. PawMatch — a pet-sitting marketplace with swipe-based matching, real-time messaging, and Stripe-powered payments at marketplace scale. Flutter. Beauty Appointment App — a cross-platform booking app built in FlutterFlow, optimized for conversion, with real-time backend sync. Microsoft Teams — enterprise mobile app, 300 million daily users. I work across React Native, Flutter, Supabase, Firebase, Node.js, and AWS, and I build AI-powered features using OpenAI and ChatGPT integrations when they genuinely improve the product. I've also shipped BLE/IoT integrations, Stripe Connect marketplace payments, HealthKit/Health Connect, and full App Store and Play Store submissions. I've worked across healthcare, fintech, marketplaces, fitness, and enterprise SaaS — different industries, same standard: clean architecture, security done right from day one, and performance that holds up under real usage. How I work: NDA before anything sensitive gets discussed. Scope and milestones locked in writing before any code gets written. GitHub and Supabase access handed to you on day one you own everything from the start. I turn down projects that aren't the right fit, so the ones I take get my full attention, not a slice of it split across twenty clients. If you've got a spec, a timeline, and a real budget message me with your scope. I'll tell you within 24 hours if I'm the right fit, and if I say yes, you have my full commitment. Best, Rayyan Siddiqui

Are you building a product that needs to scale to 1M+ users? With 9+ years of experience across 30+ international startups, I have architected and deployed over 50+ full-stack applications including a flagship app that achieved 1M+ downloads on the App Store. As a Top-Rated freelancer with a 100% Job Success Score, I specialize in "Whole Product" engineering. I bridge the gap between high-performance mobile interfaces and robust, scalable backends, eliminating the friction of managing separate frontend and backend teams. * What this means for you: Rapid prototyping, automated unit testing, and faster feature deployment without sacrificing code quality. * The Result: You get Enterprise-Grade architecture at Startup speeds. I have expertise on complex logic, security, and UX, while automating the boilerplate. Proven Track Record: * Healthcare & Biometrics: Developed complex BLE (Bluetooth Low Energy) integration for real-time health monitoring with 99% connection reliability. * High-Load Scaling: Optimized APIs for PrioritySoft, reducing response time from 4s to <200ms and cutting infra costs by 40% while handling millions of requests. * Market Success: Built and scaled "SipSkip" from MVP to multi-city production usage.
 Technical Arsenal: * Mobile (Hybrid & Native): Flutter (Expert), Kotlin, Swift, React Native. Pixel-perfect UI, complex animations, and state management (BLoC, Riverpod). * Backend & Cloud: Python (Django/FastAPI), Node.js, AWS (EC2, S3, RDS, Lambda), Docker, CI/CD pipelines. * Database: PostgreSQL, MongoDB, optimized for high-concurrency. I treat every project as if I am the CTO. This means clear communication, realistic milestones, and code that is clean, documented, and ready for your future team to inherit. Ready to turn your vision into a scalable reality? Let's discuss your roadmap.

🔝 Top Rated 1% React Native Expert on Upwork ⭐️ 7+ Years of Mobile App Development Experience ⭐️ Successfully Delivered Projects to 40+ Happy Clients ⭐️ Available 40 Hours/Week (Timezones: EST | CST | PT | ET) 🚀 Lightning-Fast Response Times 💯 100% Job Success Rating Awarded by Clients ⭐️ Expertise in Building MVPs to Scalable Enterprise Solutions As a Senior React Native Developer with 7+ years of experience, I offer comprehensive expertise in mobile app development, from conception to deployment. My skills extend beyond coding to encompass team leadership and project management, ensuring the successful delivery of complex, scalable applications. Core Competencies: • React Native, Expo, JavaScript/TypeScript • Redux, MobX for state management • RESTful APIs and GraphQL integration • Native module development (iOS/Android) • Performance optimization and debugging • UI/UX implementation with React Native components Technical Proficiencies: • Cross-platform development: React Native, Expo and Fluter • Version Control: Git, BitBucket, GitHub, GitLab • CI/CD: Jenkins, CircleCI, Fastlane • Cloud Services: Firebase, AWS Amplify • Testing: Jest, Detox, React Native Testing Library Professional Strengths: • Agile methodology implementation for medium to large-scale projects • Native English speaker with excellent communication skills • Focus on code quality, scalability, and maintainability • Expertise in app architecture and design patterns • Timely delivery of high-quality, performant mobile applications • Commitment to continuous learning and staying updated with React Native ecosystem As a Top Rated Plus freelancer, I consistently deliver exceptional results that exceed client expectations. My background in customer service has honed my skills in professionalism, empathy, and ensuring client satisfaction. I'm passionate about creating innovative mobile solutions that drive business growth. Let's discuss how I can contribute to your project's success.

I build production software for Apple platforms (iOS, tvOS, and watchOS) and Roku. My focus is video streaming, playback, and ad insertion, on a broad foundation of Apple-platform engineering. Across an 18-year software career, 15+ of it on Apple platforms, I've shipped for Bell Crave, Warner Media, ViacomCBS, IBM, and Quber. A few examples of my work: - Delivered Roku development on the Bell Crave streaming platform in BrightScript and SceneGraph, tuning load times and navigation across device tiers. - Tech-led the video player component across the ViacomCBS suite (MTV, Comedy Central, Nickelodeon, Noggin) on iOS and tvOS, and refactored ~35% of the shared codebase so each brand could extend it without breaking the others. - Built a lightweight HLS interstitial replacement for discontinuity ads via AVAssetResourceLoaderDelegate, parsing HLS manifests on the fly, opening a path to dropping a third-party ad SDK entirely. - Improved a watchOS app's battery life by 400%+ through a standalone design, HealthKit and location optimization, and removing memory leaks. - Integrated CSAI and SSAI ad insertion and analytics across client apps; added SharePlay and unit-test coverage. Streaming and ad insertion are where I go deepest, but they're a specialty, not a fence. I take on a range of Apple-platform contract work: app architecture, performance, complex UI, StoreKit, and more. Earlier on, I built the original Quber fintech app from scratch (users saved over $2M during beta) and worked for years as a 5-star iOS freelancer here on Upwork, with 22+ jobs and several multi-year clients. How I work: practical and honest. I'll tell you when something can't be done, or when a simpler approach saves you time and money. I'd rather scope a project realistically than oversell it. Available now for contract work.