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🏆 Senior Mobile App Developer 🏆 High-Performance iOS & Android Apps 🏆 Scalable Architecture | Smooth UI/UX | Production-Grade Stability Hi, This is Fahad an experienced Mobile App Developer building fast, scalable, and reliable mobile applications for startups, founders, and growing businesses. I specialize in crafting cross-platform iOS & Android apps with clean architecture, seamless user experience, and rock-solid production stability. From MVP to full-scale product, I transform ideas into powerful, bug-free mobile platforms. -𝐖𝐡𝐚𝐭 𝐈 𝐃𝐨 𝐁𝐞𝐬𝐭 📱 React Native App Development ➤ Cross-platform iOS & Android applications ➤ Expo & Expo Router workflows ➤ TypeScript & modern JavaScript architecture ➤ Redux, Zustand & Context API ➤ Reanimated & smooth UI animations ➤ Clean, scalable, and maintainable codebase -🔗 Backend & API Integration ➤ Firebase & Supabase integration ➤ Secure Authentication (Email, Phone, Google, Apple) ➤ Firestore, Realtime Database & Cloud Functions ➤ REST APIs & third-party SDK integrations ➤ Push notifications & real-time updates ⚡ App Performance & Optimization ➤ Speed & memory optimization ➤ Bug fixing & feature enhancements ➤ Crash-free, scalable architecture ➤ Long-term performance stability 🚀 App Deployment & Maintenance ➤ iOS TestFlight & App Store submission ➤ Android Play Store publishing ➤ Build management, signing & version control ➤ Continuous updates & technical support ✅ Types of Apps I Build ➤ Social platforms & chat applications ➤ Marketplace & eCommerce apps ➤ Fitness, health & tracking apps ➤ Booking & scheduling platforms ➤ EdTech & learning apps ➤ SaaS mobile tools ➤ On-demand service applications ➤ AI-powered mobile apps (chatbots, automation, personalization) 🌟 Why Choose Me? ➤ Fast, reliable & scalable development ➤ End-to-end delivery (Idea → Development → Deployment) ➤ Clear, proactive communication ➤ Long-term client partnerships ➤ Apps built for real-world scale & growth I don’t just write code I build mobile products designed to perform under real users, real traffic, and real business growth. 💻 Tech Stack React Native, Expo, TypeScript, JavaScript, Redux, Zustand, Reanimated, Firebase, Supabase, Node.js, REST API, Push Notifications, App Store & Play Store Deployment 📈 Next Steps — Let’s Move Forward We can start with a FREE 30–60 Minute Consultation to fully understand your goals and expectations. During this session, we will: ➤ Review your project idea, features, and budget ➤ Define a realistic roadmap with timeline & cost estimation ➤ Finalize the best technical approach for long-term scalability 📩 Send me a message anytime, and I’ll respond promptly to schedule a call at your convenience. I look forward to working with you in a transparent, reliable, and results-driven way and building an app that truly makes an impact. . . . . . . . . Highlighting Skills: React Native, react native app, react native app developer, react native bug, react native developer, react native mobile app development, React Native Developer, React Native Mobile, React Native Expo, React Native Firebase, React Native webrtc, react native mobile app developer, react native mobile app, React Native iOS, React, iOS Development, Android, iOS, Mobile App Development, Redux, AI App Development, Android App Development, Firebase, User interface, Smartphone, Node.Js, Push Notifications, Mobile app Bug fixes, Open AI API, API integration, Database, PostgreSQL, App Development, Android SDK, User Authentication, Alert Notifications, RestfulApi, Amazon web services, Hybrid App DEvelopment, in-app search, Firebase Realtime Database, Tablet, Auth0, Expo io, Kotlin, Swift, Laravel, Javascript, Typescript, Prototyping, Minimum Viable Product, Bluetooth, AWS Lambda, Mobile app Testing

I provide a React Native Developer team that ships cross-platform iOS and Android apps surviving real users and multi-year roadmaps. 12+ years of React Native Developer, Mobile App Development and Mobile App Developer practice, 20+ React Native Developer apps shipped across consumer, marketplace, social, safety and SaaS. My job is to scope React Native Developer engagements, match the right engineers and stay accountable for delivery. Why hire my React Native Developer team: - 12+ years of React Native Developer, Mobile App Development and Mobile App Developer practice - 20+ React Native Developer apps shipped to App Store and Google Play - 100% Job Success Score, Top Rated Plus As a React Native Developer team we ship cross-platform iOS and Android from a single TypeScript codebase. The React Native Developer team owns the pipeline from architecture to App Store and Google Play - native modules, push, IAP, Apple Pay / Stripe and OTA. After a junior react native engineer leaves a broken build, the team rebuilds with react native developer expo / EAS, react native tailwind UI and react native expo / OTA. Founders also hire my React Native Developer team for react native app developer work on in-app purchases, Apple Pay and Stripe flows, and for full stack developer react native engagements where the team owns the API. When a brief calls for deep native work, the team fields a swift ios developer and a dedicated swift developer on the iOS side, plus a swiftui developer when the UI layer is SwiftUI-first. On the Android side the same loop runs with an android developer kotlin, a kotlin developer for modern Android and a java kotlin developer for legacy migrations off older Java code. The iOS App Developer and Android App Developer roles cover store submission, native API integration and platform review, while an app developer ios android brief means one team owning both platforms end to end. When the API and the app belong together I staff a full stack mobile developer, and a react developer keeps the web and admin side aligned with the mobile build. Mobile App Development here is a loop: discovery, mobile app design, build, submission, analytics, next version. Across native iOS, native Android and react native mobile codebases the team picks the right tool per feature. It handles flutter mobile app development when the brief is Flutter-first, ios mobile app development when only iOS matters, ai mobile app development when an LLM layer is part of the product, and mobile app development flutterflow rebuilds when a no-code MVP needs to scale into real Mobile App Development. Mobile App Development is also where mobile app marketing hits code - release notes and IAP config inside the plan. As a Mobile App Developer team led by React Native Developer engineers we own the part most Mobile App Developer teams underestimate - everything from dev to live stores with paying users. A solid Mobile App Developer team knows reviewers, manifests, rejections and payment edge cases. The team delivers mobile app design that respects platform conventions - iOS gestures, Android back-button, layouts. It also covers ai mobile app developer work on LLM features, mobile application developer migrations off no-code stacks and a bubble_io certified developer mobile app handoff when the founder wants the original prototype owner kept in the loop. As a mobile app developer ukraine team we are time-zone-friendly to EU and EST. Clients hire my React Native Developer team when they need: - a React Native Developer team to ship iOS and Android from one codebase - a Mobile App Developer for full-cycle Mobile App Development from idea to store - a react native developer expo workflow with EAS / OTA - a react native app developer for IAP, Apple Pay or Stripe - a full stack developer react native who owns API and backend - a web developer or react nextjs counterpart for web/mobile alignment - a flutter developer for Flutter migrations - a python developer for ML / AI services in mobile pipelines Recent work by the React Native Developer and Mobile App Developer team: - Digital ID verification app. KYC, QR identity, multi-profile, inbox. Laravel + Node.js + MySQL + Redis on AWS. - Two safety apps. Native iOS/Android for spam call/SMS filtering and opt-out, React Native + Swift + Kotlin. - Travel app. App Store/Google Play pipeline, native push, IAP, analytics. - Global marketplace app. Listings, messenger, subscriptions, payments. Core stack: React Native, TypeScript, Swift / SwiftUI, Kotlin / Java, native iOS/Android, Flutter, Node.js, Laravel, PostgreSQL, Stripe, Firebase, Apple/Google Pay, OTA. Need a React Native Developer team, Mobile App Development partner or Mobile App Developer team that delivers and stays long-term - let's talk. Most clients who start with one engagement come back for the next phase.

🚀 Specializes in React, Next.js, and Node.js with a strong focus on production-ready SaaS, multi-tenant B2B platforms, and AI-powered web applications. ⭐ Top Rated Plus React developer 📅 6+ years of experience Full-stack development 📦 70+ projects delivered ⏱️ 5,000+ Upwork hours 🔁 ~70% returning clients A full stack developer and React developer with 6+ years of experience building fast, scalable, and secure web applications from MVP to production scale — a proven track record of reliable, high-quality delivery for startups, founders, agencies, SaaS companies, and growing businesses. 🏢 Multi-tenant SaaS & B2B platforms Strong background in multi-tenant SaaS and B2B platforms: secure, role-based systems with custom workflow logic, OWASP-compliant authentication, RBAC, and full Stripe billing (Checkout, Subscriptions, and Connect) — built to scale reliably, reduce manual operations work, and keep subscription billing accurate. This aligns well with SaaS, dashboard, admin panel, and B2B platform projects. 🤖 AI-powered products Experienced in AI-powered products: RAG pipelines, embeddings, semantic search, and prompt engineering with the OpenAI and Anthropic APIs. I build AI SaaS, chatbots, and automation tools with real-time features, streaming responses, and offline-ready PWAs — designed to lower response latency and improve reliability for end users. A strong fit for AI SaaS, automation, and integration projects. 🛒 Web apps, marketplaces & e-commerce As a web developer, I build two-sided marketplaces, e-commerce platforms, booking and scheduling systems, real-time chat and messaging, analytics dashboards, internal tools, and landing pages. Comfortable with complex features like authentication flows, payment processing, real-time data handling, and third-party API integrations. ⚡ Next.js, performance & SEO As a Next.js developer, I work deeply with the App Router, Server Components, SSR, SSG, ISR, and Jamstack builds, plus API routes and middleware — builds that typically improve SEO, reduce time-to-interactive, and deliver faster load times. With strong front end developer experience, I optimize for Core Web Vitals, accessibility, and responsive, cross-browser interfaces — so your product ranks well and feels fast on every device. 🔌 Integrations & features I implement OAuth and SSO, webhooks, payment gateways (Stripe and PayPal), Google APIs, calendar, email and SMS (SendGrid, Resend, Twilio), file uploads, PDF generation and exports, charts and data visualization, advanced search and filtering, notifications, and workflow automation with Zapier and Make. 🛠️ Tech stack A JavaScript developer proficient in React, React.js, Next.js, Node.js, TypeScript, and JavaScript. Skilled in Express, NestJS, REST and GraphQL APIs, tRPC, Prisma and Drizzle, PostgreSQL, Supabase, Firebase, PlanetScale, and Neon. Frontend with HTML5, CSS3, SCSS, Tailwind CSS, Styled-Components, Shadcn/ui, Framer Motion, and GSAP; state and data with Redux, Zustand, React Hook Form, Zod, and TanStack Query. Cloud and DevOps on AWS (Lambda, S3, EC2, RDS, Cognito), Google Cloud Platform, Azure, Vercel, and Netlify, with CI/CD via GitHub Actions. Testing with Jest, Vitest, and Playwright; monitoring with Sentry; headless CMS with Sanity, Storyblok, Payload, and Contentful. As a React Native developer, I also build cross-platform mobile apps with React Native and Expo. 🔧 Beyond my core stack Having worked across many different codebases, I'm also comfortable with and have worked with Python, PHP, Laravel, MySQL, MongoDB, Redis, WordPress, Java, FastAPI, jQuery, Gatsby.js, Remotion, and Web3 — so if your existing project mixes stacks, I can pick things up quickly, take over inherited code, and keep everything moving. 🎯 What clients hire me for Clients hire me for scalable web applications, secure REST and GraphQL APIs, high-performance Next.js front-ends, clean and modern UI, responsive and intuitive dashboards, and reliable, production-ready SaaS — all built with maintainable, well-architected, and tested code. I work across industries including SaaS, B2B, fintech, e-commerce, healthtech, ed-tech, real estate, and online marketplaces, building everything from MVPs and internal tools to full-scale, multi-tenant products. 🤝 How I work You get a reliable senior software developer who reads the brief carefully, asks the right questions, and communicates clearly. I recommend a pragmatic, scalable approach and ship clean, well-tested, production-ready code with strong ownership of performance, security, and maintainability. 💡 Whether you need a new product built from scratch, an MVP developer for a fast launch, a rescue of an existing codebase, or a long-term development partner, I'm here to help. Open to both fixed-scope MVPs and long-term product work. Let's discuss your project — happy to walk through relevant work and a recommended approach on a quick call. 👇

$1M+ earned on Upwork, placing me among a very small percentage of freelancers on the platform. 👋 I’m a veteran Full Stack JavaScript Developer, React Developer, Node.js Developer, and Web Developer with 25+ years of experience building scalable web applications, SaaS platforms, automation systems, browser extensions, and enterprise-grade JavaScript products. I work across the full product lifecycle - from architecture and UI development to backend APIs, cloud infrastructure, integrations, performance optimization, and production support. My core stack includes React, React.js, Next.js, Node.js, NestJS, TypeScript, Vue.js, Angular, PostgreSQL, MongoDB, Redis, AWS, Docker, and serverless technologies. Over the years, I’ve delivered 700+ projects across SaaS, eCommerce, Fintech, Web-to-Print, EdTech, Healthcare, CRM, AI automation, marketplaces, analytics, and enterprise platforms. 🏆 RESULTS & EXPERIENCE ✔ 25+ years in full stack development and web engineering ✔ 700+ web, SaaS, React, Node.js, and automation projects delivered ✔ Systems handling 10M+ API requests per month ✔ 30+ applications scoring 90–100 in Lighthouse audits ✔ Backend performance improvements of up to 50% ✔ Production experience with startups, scaling products, and enterprise systems ✔ Advanced AWS serverless, event-driven, and real-time architecture ✔ CI/CD and monorepo workflows that accelerate delivery and simplify maintenance ⚡ FRONTEND / REACT DEVELOPMENT As a Senior React Developer and Frontend Developer, I build fast, maintainable interfaces for SaaS platforms, dashboards, marketplaces, internal tools, and customer-facing applications. My frontend expertise includes: • React 18, React.js, Next.js 14+, Vue.js, Angular, TypeScript • SPA, SSR, ISR, PWA, and responsive web application development • Tailwind CSS, Material UI, SCSS, Bootstrap, and reusable UI systems • Complex dashboards, analytics interfaces, charts, and data visualization • Storybook, design systems, reusable component libraries, and UI architecture • Nx, Turborepo, Module Federation, and micro frontend architecture • Core Web Vitals, Lighthouse optimization, bundle reduction, and frontend performance • Mobile-first development and React Native integrations • Chrome extensions, browser extensions, content scripts, background services, and extension APIs • Puppeteer, Playwright, browser automation, scraping workflows, and automated testing 🔌 NODE.JS / BACKEND DEVELOPMENT As a Node.js Developer and Backend Developer, I design scalable APIs and backend systems that support complex business logic, real-time workflows, automation, and high-volume applications. • Node.js, NestJS, Express, Koa, Hapi • REST API and GraphQL development • PostgreSQL, MongoDB, MySQL, DynamoDB, Firebase, Redis • Prisma, Sequelize, TypeORM, Mongoose • JWT, OAuth, RBAC, secure authentication, and permissions • WebSockets, SocketIO, Redis, Kafka, and real-time infrastructure • BullMQ, AWS SQS, queues, workers, and background processing • Microservices and event-driven architecture • AWS Lambda, EventBridge, Step Functions, and serverless systems • ETL pipelines, analytics processing, and data aggregation • OpenAI API, Dialogflow, AI integrations, and automation workflows ☁️ CLOUD, DEVOPS & DELIVERY I build production-ready systems with reliable deployment, monitoring, and scaling workflows. • AWS, Docker, CloudFront, S3, Vercel, Firebase • GitHub Actions, GitLab CI/CD, Bitbucket Pipelines • AWS CDK and infrastructure as code • Sentry, Datadog, ELK Stack, logging, and monitoring • Redis caching, database optimization, and cloud cost reduction • Monorepos with Nx and Turborepo • Secure deployment and environment management 🌍 PRODUCTS I BUILD • SaaS platforms and startup MVPs • AI-powered products and automation systems • eCommerce and marketplace platforms • CRM, ERP, and internal business tools • Fintech and analytics applications • Healthcare and EdTech platforms • Real-time dashboards and reporting systems • Browser extensions and browser automation tools • API integrations and workflow automation • Legacy platform modernization ⚙️ CORE TECHNOLOGIES JavaScript, TypeScript, React, React.js, Next.js, Vue.js, Angular, Node.js, NestJS, Express, PostgreSQL, MongoDB, MySQL, Redis, AWS, Docker, Firebase, Vercel, GraphQL, WebSockets, Puppeteer, Playwright, Stripe, OpenAI API, SendGrid, PandaDoc. ✅ LET’S BUILD A PRODUCT THAT CAN SCALE If you need a Senior Full Stack Developer, Full Stack JavaScript Developer, React Developer, Next.js Developer, Node.js Developer, Backend Developer, or Web Developer who can take ownership of both architecture and delivery, I’d be glad to help. Message me to discuss your SaaS platform, web application, automation system, browser extension, marketplace, CRM, AI product, or enterprise platform.

✅ Expert-Vetted Developer | Digital Solutions Architect | Founder of Apptimist Studio Helping startups and scaling businesses build world-class digital products with speed, strategy, and confidence. **** About Me**** I'm a product-focused software engineer and systems architect with over a decade of experience helping teams bring their digital ideas to life. I lead Apptimist Studio, a product development studio that partners with early-stage and scaling companies to build high-quality, scalable web and mobile applications. Whether you're launching your MVP, rebuilding an outdated platform, or need a fractional CTO to guide your tech decisions—I can help. ****What I Do**** ✅ I work with founders, product teams, and agencies to: - Build MVPs or complete products from scratch - Act as an outsourced CTO or technical co-founder - Translate business goals into clear, executable development plans - Lead and manage remote product teams - Set up scalable, cloud-native infrastructure - Improve code quality, security, and system reliability ****Core Expertise**** ✅ Product Strategy & Ownership - Defining, prioritizing, and delivering product features with a user-first mindset ✅ Custom Web Application Development - Python, Django, PostgreSQL, Docker, ECS ✅ Cloud & Infrastructure Architecture - AWS (Certified Cloud Practitioner), EC2, ECS, S3, CloudFormation, Terraform ✅ DevOps & Automation - CI/CD, Kubernetes, containerized environments, scalable backend workflows ✅ System Design & Data Architecture - Secure, API-first, modular systems for long-term growth ✅ UX/UI Oversight - Working alongside in-house designers and researchers to ensure product-market fit. While I personally focus on strategy, systems, and technical leadership, I work closely with our in-house expert UX/UI designers and developers to deliver seamless, user-centered experiences across web and mobile platforms. If awarded a UX/UI project, I’d bring in one of our senior UX/UI specialists to collaborate with me and ensure we cover all bases — from user research and wire-framing to pixel-perfect UI design and implementation. This means you get a cohesive, end-to-end team without the hassle of managing multiple freelancers. ****Selected Work**** I’ve worked with global corporations, fast-growing startups, and everything in between. ****Highlights include**** ✅ Thrive Circle – Infrastructure and backend for a US wellness app ✅ SPAR - E-commerce platform for modernised in-store, self-checkout grocery shopping ✅ ZIM Connections – Global eSIM tech platform with complex onboarding flows ✅ Muzeo Treats – Full custom e-commerce build for gourmet gifting ✅ Nescafé É (Nestlé) – Internal innovation portal for global teams ✅ Tamarack Idaho – Resort booking tools and mobile feature development ✅ European Bank (Confidential) – Data pipelines and secure cloud systems ✅ Industry 4.0 Digital Tools – Manufacturing optimization for Italy & Slovenia ✅ IoT Security Projects – Secure prototyping with MircoSec in Singapore ****About Me**** I hold a Master’s degree in Engineering of Computing Systems from Politecnico di Milano and am a Certified AWS Cloud Practitioner. I'm also the author of On Understanding the Causes of Software Defectiveness, a book focused on improving software quality and reliability. Over the years, I've worked with Forbes 200 companies such as Accenture, Pirelli, and Spar, as well as numerous startups across Europe, the U.S., and Asia. ****Why Clients Choose Me**** ✅ I combine deep technical expertise with clear product thinking ✅ I communicate openly, proactively, and with transparency ✅ I lead projects with structure, accountability, and a focus on business outcomes ✅ I offer long-term partnerships—not just code drops If you're looking for a reliable technical partner who understands both engineering and product strategy, let's talk. I’d be happy to learn more about your project and see how I can help.

Javascript / React-native developer with more than 7 years of hands-on experience in mobile cross-platform and web application development Achievements: * Expertise in UI/Front-End Mobile Development, designing, testing, and implementing various applications from different fields(Fintech, social networking, medicine, blockchain, corporate networks, streaming services etc) * Developed more than 14 mobile apps half of which were built from scratch * Bringing projects from the beginning to public release to AppStore and GooglePlayMarket * Experienced with implementing various native modules to achieve perfect results for the end users * Developing architectural and design solutions for scalable and maintainable applications * Actively contributing to the project lifecycle via active participation in creating and maintaining release and testing strategies, contributing to managerial activities, and maintaining the project after release * Risk management and mitigations