About Me I have 25+ years of experience in partial CTO, CEO, Mobile App Development Project Management, specializing in Android, iOS, & Cross-Platform App Development using Java, Kotlin, Swift, Objective C, React Native, Redux Flutter, Firebase, Mongo Db, User Authentication, EHR, FHIR, HL7, HIPAA compliance, Typescripts, and AI-driven applications. My expertise spans iOS & Android development, AI-powered solutions, seamless authentication systems, and full-stack capabilities, ensuring modern, high-performance apps for businesses of all sizes. Our Agency Since July 2017, my wife, our talented 55+ team members, and I have been delivering world-class digital solutions. - 150+ apps successfully delivered across multiple platforms in the last year - $4M+ turnover on Upwork - 500+ successful projects, 15,000+ hours worked - Close to a 100% success rate - Worked with 7, 8, and 9-figure businesses Our Expertise Mobile App Development • Android, iOS, & Cross-Platform Apps (Java, Kotlin, Swift, Objective C, React Native, Flutter) Web & Full Stack Development • Front-End: React.js, Angular.js, Next.js, WebRTC • Back-End: Node.js, Firebase, MongoDB, PostgreSQL • Cloud Deployment & API Integrations E-commerce & CMS Development • Shopify Developer & Customization • WordPress Developer & WooCommerce Solutions UI/UX Design & Branding • Adobe XD, Figma, Photoshop, Sketch Digital Growth & Security • SEO & Digital Marketing Optimization • Data Security & Intellectual Property Protection Intellectual Property Services • Trademark & Copyright Assistance Why Choose SolidAppMaker? - Tailored Approach: Every project is customized to fit your needs and budget. - Agile Workflow: Regular updates, milestones, and transparent communication. - High-Quality Development: Rigorous testing & performance optimization. - Competitive Pricing: Top-tier services at fair and transparent pricing. - Proven Track Record: Experience with MVPs, SaaS platforms, AI-driven apps, and enterprise solutions. Why SolidAppMaker Stands Out - 8+ years of expertise in UI/UX, mobile apps, SaaS & web development - 510+ projects successfully completed for startups & enterprises - 10+ awards & recognitions, featured on Upwork & top design platforms - 50+ countries served, delivering top-tier prototyping & development solutions Proven Results: - SaaS UI/UX enhancements boosted retention by 60% - Mobile UI redesigns reduced churn by 40% - Web App UX improvements increased task completion by 90% - eCommerce UI revamps increased sales by 70% Industries We Cover Healthcare, Transport, Retail, Asset Management, Real Estate, Dating, Nature/Wildlife, Rental, Food Delivery, Fintech / Finance and Banking, Cryptocurrency, Entertainment, Hospitality, Logistics, Manufacturing, Media and Publishing, Non-Profit, Sports and Fitness, Travel and Tourism, Utilities, Wellness, Medical Dashboard, Marketplace, Advertising, Automotive, Business Innovations, Ecology, Human Resources, LegalTech, Lifestyle, Fashion, Marketing, Navigation, Education, E-learning. Highlighted Skills Project Planning, MVC Architecture and RESTful APIs, Front-end Technologies (React.js, HTML5, CSS3, JavaScript), Responsive and Mobile-first Design, Database Design and Implementation (MongoDB, Firebase), User Authentication, Integration of Third-party APIs, Deployment to Cloud Platforms (AWS), Test-driven Development, Agile Methodologies (Scrum, Kanban), Security Technologies, QR Code Scanner, GPS and Mapping, Blockchain and NFT, ChatGPT and Artificial Intelligence. Flutter Developer 10+ years of experience As a Mobile App Developer and Full Stack Developer with deep expertise in SaaS Mobile App, ReactNative App I bring over a decade of experience in building high-performance cross-platform mobile application. As a talented Flutter Developer with good knowledge of cross-platform development, I specialize in crafting high-performance mobile apps for both iOS and Android platforms. I made more than 400 apps using Flutter. Flutter is my main tech stack, I helped dozens clients making top-performing apps using Flutter. I am a dedicated mobile app developer with extensive experience building cross-platform apps in Flutter, React Native, and Expo. As a full stack developer, I combine clean front-end design with robust back-end systems using Laravel, Node.js, or Firebase to deliver high-performance mobile solutions. FlutterDeveloper MobileApp AndroidDevelopment IOSDeveloper. Next Steps – Let’s Build Something Amazing! 📅 Would you be available for a 30-60 minute free consultation? During this meeting, we will: - Go over your project goals, technical needs, and budget. - Provide a project plan with a timeline and cost estimate. - Discuss the best development approach to fit your vision. 📩 Send me a message, and I’ll share the Upwork scheduler link so we can set up a time that works best for you. Looking forward to collaborating and creating something extraordinary! Best regards, John H Fijen

During my extensive 18-year tenure in software development, I have had the privilege of working on numerous enterprise projects for well-established organizations across the globe. Throughout my career, I have successfully delivered top-tier digital solutions, mobile applications, and device integration projects within allocated timelines and budgets. To ensure optimal outcomes, I employ agile methodologies and leverage DevOps practices. Here are my key areas of expertise in software development: - Web Programming: Proficient in React JS, .NET Core, .NET MVC, C#, WordPress, HTML 5, Bootstrap, and CSS. - React Native App Development: Skilled in utilizing React JS, React Native (Facebook), and Redux to create robust mobile applications. - Android App Development: Well-versed in Android (Java), Android MVP architecture, Material design, and Android Studio for building feature-rich apps. - iOS App Development: Experienced in Objective C, Swift, and XCode for iPhone and iPad app development. - Databases: Familiar with various databases such as MySQL, MongoDB, SQLite, SQL Server, and PostgreSQL. - Source Control and Project Management: Proficient in Git, SVN, JIRA, and Azure Repos for efficient version control and project management. - Cloud Integration: Experienced in integrating AWS services like Amazon S3, Amazon EC2, and load balancing, as well as Azure DevOps and Google Cloud APIs. - Project Management: Well-versed in Agile and Scrum methodologies, with expertise in DevOps practices. - API Integration: Skilled in working with REST, SOAP, and GraphQL APIs, as well as technologies like SignalR, CORS, WebSockets, and multi-threading. Specializing in full-stack DevOps development using C#, .NET, ASP.NET MVC/Core, Dapper, and MSSQL/PostgreSQL, I am proficient in both front-end and back-end development. My skill set includes REST Web API, Web Services, Azure, VSTS GIT, Jira, and CI, with a strong focus on debugging and troubleshooting. Furthermore, I possess expertise in cloud computing (AWS, Azure), continuous integration and deployment, digital strategy, agile development methodologies, security-first principles, and quality assurance. I have gained extensive experience in working with various third-party APIs and microservices, such as Azure DevOps, GIT, Bitbucket, deploying web apps on IIS, Windows server administration, Twitter API, PUBNUB, Google API, OAuth, OKTA APIs, Concur APIs, and Stripe APIs. Throughout the application development lifecycle, I emphasize maintaining code quality and adhere to agile practices. With my diverse skill set and comprehensive experience, I am confident in delivering high-quality software solutions and driving successful projects.

I build AI agents, automation pipelines, and full-stack SaaS products that go live fast and scale without breaking. My work sits at the intersection of backend engineering and intelligent automation. Node.js on the server, OpenAI and Claude on the logic layer, and clean architecture that does not need a rewrite six months later. You get the output of a senior full-stack team with the accountability of one developer who owns the entire system from day one. 𝐖𝐇𝐎 𝐈 𝐇𝐄𝐋𝐏 Startups that need an AI-powered product launched quickly without burning budget on a full team. Businesses ready to automate repetitive workflows, reduce operational costs, and run 24/7 with intelligent systems. SaaS companies outgrowing their MVP. I build scalable multi-tenant architecture with Stripe subscription billing built correctly from day one. Founders who want one accountable developer owning the full system, from API integration to frontend, with full ownership at every stage. 𝐖𝐇𝐀𝐓 𝐈 𝐁𝐔𝐈𝐋𝐃 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭𝐬 𝐚𝐧𝐝 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 Custom autonomous agents and multi-step workflows using OpenAI GPT-4o, Claude, Gemini, and LangChain. I design agent pipelines that make decisions, take action, and handle complex business logic without human input. RAG pipelines, vector search, and document intelligence using Pinecone and ChromaDB. 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐒𝐚𝐚𝐒 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 End-to-end applications with React.js, Next.js, Angular, and Vue.js on the frontend. TypeScript across the full stack. Backend with Node.js, NestJS, and Express. REST, GraphQL, and WebSocket APIs. Multi-tenant SaaS with Stripe billing, role-based access, team management, and usage-based feature gating. 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐚𝐧𝐝 𝐁𝐫𝐨𝐰𝐬𝐞𝐫 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 End-to-end automation that eliminates manual work. Playwright and Puppeteer for browser automation and scraping pipelines. Webhook-driven workflows, n8n, ETL pipelines, Redis queues, and scheduled background jobs that run without supervision. 𝐀𝐏𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 𝐚𝐧𝐝 𝐓𝐡𝐢𝐫𝐝-𝐏𝐚𝐫𝐭𝐲 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 I connect your app with Stripe, PayPal, Twilio, OAuth2, Zoom, Google APIs, and any REST or GraphQL service your product depends on. Full handling of authentication, webhooks, error management, and data sync across 30+ integrations delivered. 𝐂𝐡𝐫𝐨𝐦𝐞 𝐄𝐱𝐭𝐞𝐧𝐬𝐢𝐨𝐧𝐬 𝐚𝐧𝐝 𝐑𝐞𝐚𝐥-𝐓𝐢𝐦𝐞 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 Custom Manifest V3 Chrome extensions for browser-based productivity and SaaS integration. Real-time dashboards, live collaboration tools, and video streaming with WebSockets, WebRTC, LiveKit, and FFmpeg. 𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 AI and Agents: OpenAI GPT-4o · Claude · Gemini · LangChain · Pinecone · ChromaDB · RAG Pipelines · DeepSeek Backend: Node.js · NestJS · Express · FastAPI · Python · Flask Frontend: React.js · Next.js · Angular · Vue.js · TypeScript · Tailwind CSS · ShadCN · Kendo UI Databases: PostgreSQL · MongoDB · Redis · Elasticsearch DevOps: AWS · GCP · Docker · Kubernetes · Vercel Automation: Playwright · Puppeteer · n8n · Webhook Pipelines · Redis Queues · Celery Integrations: Stripe · PayPal · Twilio · OAuth2 · Zoom · Google APIs 𝐋𝐈𝐕𝐄 𝐏𝐑𝐎𝐃𝐔𝐂𝐓𝐒 𝐈 𝐇𝐀𝐕𝐄 𝐁𝐔𝐈𝐋𝐓 𝐒𝐜𝐫𝐨𝐥𝐥𝐢𝐧𝐠 𝐀𝐈: AI-powered TikTok automation platform with text-to-image, AI video generation, custom avatar creation, and fully automated campaign scheduling, built on Node.js and OpenAI. 𝐃𝐨𝐜𝐮𝐟𝐚𝐬𝐭 𝐀𝐈: AI process documentation platform that automatically records workflows and converts them into step-by-step guides, training videos, and interactive tutorials. 𝐂𝐨𝐧𝐭𝐞𝐧𝐭 𝐃𝐫𝐚𝐟𝐭𝐞𝐫: AI social media content platform with guided workflows, real-time generation, ad creative uploads, and Stripe subscription billing. 𝐖𝐇𝐘 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐂𝐇𝐎𝐎𝐒𝐄 𝐌𝐄 Over 8 plus years I have shipped AI-powered SaaS products, Chrome Extensions, and automation systems for startups across fintech, healthcare, and e-commerce. Every project gets full ownership from the first architecture decision to the final production deployment. Clean code, proper testing, documented handoffs. I work async-friendly, communicate clearly, and stay accountable through the full build cycle. Not just until the PR is merged. If you are building an AI product, need automation that actually runs in production, or want a Node.js expert who owns the full stack, send me a message. I respond within 24 hours and offer a free 30-minute scoping call for serious projects.

Hi! I am Saurav. Most of my projects cover the full stack development - a Flutter mobile app, a React web app and dashboard, and a Node.js/Python-based backend, a complete one-stop solution for end to end delivery. Clients find it easier than coordinating three separate developers. 𝟵𝟲% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀. 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀. $𝟯𝟬𝟬𝗞+ 𝗲𝗮𝗿𝗻𝗲𝗱. 𝟴𝟬+ 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗱𝗼𝗻𝗲. 𝗪𝗵𝗮𝘁'𝘀 𝗶𝗻 𝗺𝘆 𝗽𝗼𝗿𝘁𝗳𝗼𝗹𝗶𝗼: • AI note-taking app with real-time transcription via Deepgram, OpenAI, and Gemini models, on both stores (SummarizeX- Full-stack development) • Social networking platform with 5* ratings (Check Up) • On-demand home inspection marketplace for New Jersey - Flutter, Node.js, Stripe Connect, on AWS (CID Inspections) • Multiplayer mobile game on App Store and Google Play (PaperCut Football) • AI productivity web app with calendar management and Chrome extension — Next.js frontend, Node.js backend (Smarty) • Research companion app with in-app purchases, on App store & Play store (Zendy) • Health app with AI food recognition and HealthKit - patients log meals in seconds (Glucare) • Fintech accounting app for iOS and Android (Hibooks) • Language translation app with ChatGPT and Google Ads (FingoLingo) • ERP system in Flutter with Laravel backend (Manvik ERP) 𝗦𝘁𝗮𝗰𝗸: • Mobile: Flutter · Dart · React Native · Swift · Kotlin · iOS · Android • Web: React.js · Next.js · Angular · TypeScript • Backend: Node.js · Python · Django · Flask · FAST API · REST APIs · GraphQL • Databases: MySQL · PostgreSQL · MongoDB · Firebase · Redis · Realm · Supabase · AirTable • Audio & Video: Agora · Twilio · WebRTC • AI: OpenAI · Gemini · Claude · Base44 · DeepSeek · Deepgram · ElevanLabs · HealthKit · on-device ML • Payments: Stripe · Stripe Connect · StoreKit · In-App Purchases • Cloud: AWS · Firebase · Azure · Docker · CI/CD 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀: Health & Fitness · FinTech · EdTech · Real Estate · E-commerce · On-Demand Services · Productivity · Social · Gaming 𝗚𝗼𝗼𝗱 𝗳𝗶𝘁 𝗶𝗳: • You need a web and mobile product built by one person, not a committee • You want AI features added to an existing web or mobile app • A previous developer left things half-finished • You're a founder who needs someone to own the full build The clients who keep coming back are usually the ones who tried splitting it across multiple developers first. Message me what you're building. I'll give you an honest read on timeline and approach within 24 hours.

🌟 𝗦𝙪𝙘𝙘𝙚𝙨𝙨𝙛𝙪𝙡 𝙢𝙤𝙗𝙞𝙡𝙚 𝙥𝙧𝙤𝙙𝙪𝙘𝙩𝙨 𝙖𝙧𝙚𝙣'𝙩 𝙗𝙪𝙞𝙡𝙩 𝙗𝙮 𝙖𝙙𝙙𝙞𝙣𝙜 𝙢𝙤𝙧𝙚 𝙛𝙚𝙖𝙩𝙪𝙧𝙚𝙨—𝙩𝙝𝙚𝙮 𝙖𝙧𝙚 𝙗𝙪𝙞𝙡𝙩 𝙗𝙮 𝙨𝙤𝙡𝙫𝙞𝙣𝙜 𝙩𝙝𝙚 𝙧𝙞𝙜𝙝𝙩 𝙥𝙧𝙤𝙗𝙡𝙚𝙢𝙨 𝙬𝙞𝙩𝙝 𝙩𝙝𝙚 𝙧𝙞𝙜𝙝𝙩 𝙩𝙚𝙘𝙝𝙣𝙤𝙡𝙤𝙜𝙮. 🌟 I am a Top-Rated Mobile App Developer with 7+ years of experience helping start-ups, founders, and businesses build scalable iOS and Android applications. I have partnered with companies to launch MVPs, modernize existing products, and scale mobile platforms using Flutter, React Native, Firebase, and custom backend technologies. From mobile apps to secure APIs and scalable backends, I build end-to-end solutions that solve real business challenges and deliver exceptional user experiences. # 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲 # ➔ Top Rated Freelancer with 100% Job Success ➔ 7+ years building high-performance iOS and Android applications ➔ Expertise in Flutter, React Native, Firebase, Supabase, and custom backend development with Node.js and Laravel ➔ Proven experience building MVPs, marketplaces, booking platforms, subscription-based applications, and AI-powered products ➔ Strong focus on performance, security, scalability, and long-term maintainability ➔ Clear communication, transparent milestones, and reliable delivery ➔ Direct collaboration from discovery to launch—no intermediaries or communication gaps # 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝 # ➤ Startup MVPs ➤ Marketplace Applications ➤ Booking & Scheduling Platforms ➤ On-Demand Service Applications ➤ Delivery & Logistics Applications ➤ E-Commerce & Shopping Applications ➤ Subscription-Based Applications ➤ AI-Powered Applications ➤ Social Networking & Real-Time Communication Applications ➤ Live Streaming Applications ➤ Health & Fitness Applications ➤ Location-Based & GPS Applications ➤ FinTech, Wallet & Payment Applications ➤ QR Code, Barcode & NFC-Enabled Applications ➤ App Store & Google Play Deployment ➤ Mobile App Maintenance & Support # 𝐌𝐨𝐛𝐢𝐥𝐞 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 # ➤ Custom Backend Development & API Architecture ➤ Admin Dashboards & User Management ➤ Database Design & Optimization ➤ Cloud Infrastructure & Deployment ➤ Third-Party API Integrations ➤ Payment & Subscription Systems ➤ Analytics, Monitoring & Performance Optimization ➤ Secure APIs & Custom Backend Systems # 𝘿𝙚𝙫𝙚𝙡𝙤𝙥𝙢𝙚𝙣𝙩 𝘼𝙥𝙥𝗿𝗼𝗮𝗰𝗵 # I approach every project with a product mindset, focusing on business goals, user experience, and long-term scalability—not just feature delivery. Before writing code, I take the time to understand your users, priorities, and long-term vision so we can make the right technical decisions from the start. 𝗜 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝘄𝗵𝗼 𝘄𝗮𝗻𝘁 𝘁𝗼: 🔸 Turn an app idea into a market-ready MVP quickly 🔸 Build scalable iOS and Android applications that support business growth 🔸 Modernize existing mobile apps with improved performance and user experience 🔸 Add AI-powered capabilities to create smarter user experiences 🔸 Partner with a dedicated developer for long-term product development and support # 𝐌𝐲 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐏𝐫𝐨𝐜𝐞𝐬𝐬 # ✓ Discovery & Product Planning ✓ Architecture & Milestone Definition ✓ Clean, Maintainable Code ✓ Performance Optimization ✓ Secure Backend Integrations ✓ Reliable API Connectivity ✓ Thorough Testing & Quality Assurance ✓ App Store & Google Play Deployment ✓ Post-Launch Support & Continuous Improvement 𝗜 𝗽𝗿𝗲𝗳𝗲𝗿 𝘀𝗵𝗼𝗿𝘁 𝗳𝗲𝗲𝗱𝗯𝗮𝗰𝗸 𝗰𝘆𝗰𝗹𝗲𝘀 𝗮𝗻𝗱 𝗿𝗲𝗴𝘂𝗹𝗮𝗿 𝗱𝗲𝗺𝗼𝘀, 𝘀𝗼 𝘆𝗼𝘂 𝗮𝗹𝘄𝗮𝘆𝘀 𝗸𝗻𝗼𝘄 𝘄𝗵𝗮𝘁'𝘀 𝗯𝗲𝗶𝗻𝗴 𝗯𝘂𝗶𝗹𝘁, 𝘄𝗵𝘆 𝗶𝘁 𝗺𝗮𝘁𝘁𝗲𝗿𝘀, 𝗮𝗻𝗱 𝘄𝗵𝗮𝘁 𝗰𝗼𝗺𝗲𝘀 𝗻𝗲𝘅𝘁. # 𝘾𝙤𝙧𝙚 𝙏𝙚𝙘𝙝𝙣𝙤𝗹𝗼𝗴𝗶𝗲𝘀 # • Flutter • React Native • Dart • Kotlin • Swift • Firebase • Supabase • Node.js • Laravel • REST APIs • WebSockets • WebRTC • PostgreSQL • MongoDB • Stripe • Razorpay • PayPal • Google Maps API • OneSignal • OpenAI API 𝗪𝗵𝗲𝗻 𝘆𝗼𝘂 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 𝗺𝗲, 𝘆𝗼𝘂 𝘄𝗼𝗿𝗸 𝗱𝗶𝗿𝗲𝗰𝘁𝗹𝘆 𝘄𝗶𝘁𝗵 𝘁𝗵𝗲 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝗿𝗲𝘀𝗽𝗼𝗻𝘀𝗶𝗯𝗹𝗲 𝗳𝗼𝗿 𝗽𝗹𝗮𝗻𝗻𝗶𝗻𝗴, 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴, 𝘁𝗲𝘀𝘁𝗶𝗻𝗴, 𝗮𝗻𝗱 𝗹𝗮𝘂𝗻𝗰𝗵𝗶𝗻𝗴 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗱𝘂𝗰𝘁. If you're looking for a reliable Mobile App Developer to build, scale, or improve your iOS or Android app, I'll help you define the right roadmap, technology stack, and scalable architecture for your product. 𝗥𝗲𝗮𝗱𝘆 𝘁𝗼 𝗯𝘂𝗶𝗹𝗱, 𝘀𝗰𝗮𝗹𝗲, 𝗼𝗿 𝗶𝗺𝗽𝗿𝗼𝘃𝗲 𝘆𝗼𝘂𝗿 𝗺𝗼𝗯𝗶𝗹𝗲 𝗮𝗽𝗽? 𝗦𝗲𝗻𝗱 𝗺𝗲 𝗮 𝗺𝗲𝘀𝘀𝗮𝗴𝗲, 𝗮𝗻𝗱 𝗹𝗲𝘁'𝘀 𝗱𝗶𝘀𝗰𝘂𝘀𝘀 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁.

I help ambitious founders and scale-ups launch high-performance mobile products by delivering scalable Mobile App Development that reduces technical debt by 40% and cuts time-to-market by up to 3 months. If you are looking for a seasoned React Native expert to bridge the gap between complex business requirements and a seamless user experience, you have found the right iOS Android Developer. In today’s digital-first economy, a mobile app is your most significant customer touchpoint. It needs to be fast, stable, and intuitive. I have spent years refining my craft in Mobile App Development, focusing on building robust, cross-platform solutions that perform under pressure. Whether you are building an MVP or scaling an existing ecosystem, my goal is to ensure your product survives the challenges of growth while staying ahead of the competition. When I approach Mobile App Development, I treat your project as if it were my own. I specialize in React Native because it allows for high-velocity iteration without sacrificing the native feel users demand. By leveraging TypeScript alongside Expo or bare React Native workflows, I create a Scalable architecture that ensures your app remains maintainable. I understand that your Requirements are unique from complex API integration with REST APIs and Supabase to real-time Firebase backends and intricate Push notifications. My role as your iOS Android Developer is to handle the heavy lifting so you can focus on strategy. Quality Mobile App Development is about the entire lifecycle. My process covers everything from initial UI/UX implementation and Performance optimization to the final App Store and Google Play submission. I have navigated review guidelines for Apple and Google hundreds of times, meaning I know exactly what is required to get your app live without the headaches of repeated rejections. Whether we are utilizing Swift or Kotlin for native performance hooks or working deep in the Node.js stack for custom backends, I ensure the transition from code to user device is frictionless. I am often looking for partners who value precision. My track record as an iOS Android Developer proves that I can handle the nuances of platforms. While my primary expertise lies in React Native, I bring a broad background in full stack developer methodologies, including Laravel, Python, and JavaScript. I have seen projects where a Flutter developer might have been a good fit, but I often demonstrate why a well-architected React Native solution offers better long-term flexibility for teams invested in the React ecosystem. My expertise extends to iOS Development, Android App Development, and integrating advanced Smartphone features like camera processing and biometric security. My workflow is built for modern teams. Independent work is my standard. I prioritize API integration and Performance optimization as a Must-have rather than an afterthought. If you have an existing codebase that needs an audit, I am ready to identify bottlenecks in your Scalable architecture and polish your UI/UX implementation to drive conversion. I believe Mobile App Development should be a collaborative, transparent journey. Beyond technical execution, I act as a product consultant. I help you decide which features are necessary for your v1, preventing "feature creep" that often delays launch. I have worked with everything from E commerce app development to complex SaaS solutions. If you are looking for an iOS Android Developer who understands that code is a business asset rather than a sunk cost, my approach will resonate with you. In the world of App Development, documentation is critical. When I hand over a project, you are not left with "black box" code. You receive a fully documented repository that any future Mobile app developer can navigate immediately. I use Firebase for rapid prototyping and Supabase when deep relational data structures are needed. I take great pride in the Mobile App experiences I create. I’ve seen projects move from sketches to thousands of daily users. I’m currently looking for innovative projects where my skills make a measurable difference. If you have an existing App Development hurdle, let’s solve it together. My communication is direct, and my focus is always on your outcome. From the first line of code to the final store approval, I am there to guide your project. I’m available for a 30–60 minute consultation to review your React Native or mobile app development needs. We can align on technical direction, delivery approach, and realistic timelines, after which I’ll outline a clear execution plan and cost structure. I’d be glad to collaborate. Let’s connect and turn your ideas into a top-tier mobile product.

🔥 WHAT I'VE SHIPPED THAT ACTUALLY MATTERS: ✔️ Enterprise geospatial SaaS platform React + TypeScript + GCP, serving US-based analysts at Synmax ✔️ Full EV mobility platform real-time IoT data, WebSocket, MQTT, multi-city CRM at Setrans ✔️ Maritime vessel tracking system AIS data processing, real-time monitoring at Smart Working ✔️ Multi-tenant investment platform Next.js, AWS Lambda, StoryBook component library at Esstart ✔️ Event-driven recruitment SaaS CQRS, RabbitMQ, Redis, MongoDB at A24Group ✅ WHAT I BUILD FOR YOU: ✔️ SaaS Platforms multi-tenant, subscription, role-based access, from MVP to scale ✔️ Real-Time Dashboards live data, charts, maps, IoT integrations ✔️ MVPs working product in 2–4 weeks, investor-ready ✔️ Admin Panels & CRM Systems complex workflows, dynamic roles ✔️ REST & GraphQL APIs clean, documented, production-ready ✔️ AWS & GCP Infrastructure CI/CD, Lambda, EC2, Cloud Build ⚒️ MY STACK: Frontend: React.js · Next.js · TypeScript · Tailwind CSS · Material UI StoryBook · D3.js · Chart.js · Leaflet Backend: Node.js · NestJS · Express.js · Spring Boot · Django · FastAPI Database: PostgreSQL · MongoDB · Redis · MySQL Cloud: AWS (Lambda, EC2, Amplify, Cognito, SES, S3, EventBridge) GCP (Cloud Build, Firebase) Arch: Microservices · CQRS · Event-Driven · WebSocket · RabbitMQ AI Tools: Claude Code · GitHub Copilot · Cursor · V0.dev 😉 YOU GET: ✔️ Daily updates you always know where things stand ✔️ Clean, scalable architecture not just working code, code that grows ✔️ Full ownership frontend + backend, no handoff delays ✔️ Fast delivery I respect your timeline and your budget Let's start with a quick consultation no commitment, just clarity. ✔ React ✔ Node.js ✔ Next.js ✔TypeScript ✔ Full-Stack Development✔ SaaS Development ✔ REST API ✔PostgreSQL ✔MongoDB ✔AWS ✔JavaScript✔Front-End Development ✔ Back-End Development ✔Tailwind CSS ✔GraphQL ✔Firebase ✔Web Application ✔API Integration ✔ NestJS ✔ Real-Time Applications ✔ Docker ✔ Microservices I'm Dipti, a Senior Full Stack Engineer with 8+ years and $400K+ earned on Upwork Top Rated Plus, 95% Job Success Score, 27 completed projects with zero abandoned contracts.

Senior Full Stack Web & Mobile App Developer | Contract & Remote Specialist With 15+ years of experience and over 4,000 hours worked on Upwork, I help businesses build scalable, secure, and high-performance web and mobile applications that deliver measurable results. I specialise in PHP, Laravel, React, Node.js, Flutter, AWS, and AI/ML integration creating tailored solutions that meet your current needs and grow with your business. 💼 Core Services Full Stack Web Development – PHP, Laravel, React, Vue.js, Nuxt.js, Node.js, TypeScript, Angular Mobile App Development – Flutter, React Native, cross-platform, native iOS & Android Cloud Integration & Deployment – AWS, Google Cloud, serverless architecture, CI/CD pipelines AI/ML Integration – Hugging Face, Python, NLP, automation workflows E-Commerce Solutions – WooCommerce, Shopify, OpenCart, Magento, custom SaaS platforms Legacy System Modernisation – performance optimisation, security hardening, migration to cloud 🏆 Why Clients Hire Me Proven Track Record: 217+ successful projects and $100K+ earned on Upwork Enterprise Experience: Delivered solutions for Holland & Barrett, NHS, and other global brands Industry Expertise: Healthcare, E-learning, FinTech, Retail, SaaS, and more End-to-End Delivery: From initial concept to deployment, with ongoing support Strong Communication: Clear updates, quick responses, and deadline-focused delivery 📌 Technology Stack & Tools Languages & Frameworks: PHP, Laravel, JavaScript, TypeScript, React, Vue.js, Nuxt.js, Node.js, Flutter, Angular Databases: MySQL, MongoDB, SQL Server Cloud Platforms: AWS, Google Cloud Version Control: Git, SVN AI/ML Tools: Hugging Face, TensorFlow, Python 💡 Let’s Build Something Great Whether you need a full-stack partner for a new build, a mobile app expert to reach more customers, or cloud & AI-powered solutions to modernise your systems, I can help. 📩 Let’s discuss your project today and bring your vision to life.

Looking to build a web or mobile app that works in production, not just in demos? I've shipped 20+ complex applications for startups and businesses across the US and Canada — 100% Job Success, Top Rated Plus on Upwork. I specialize in three areas where most React developers have no experience: HEALTHCARE PLATFORMS — HIPAA-compliant clinical systems, appointment scheduling, session notes, insurance management, EDI billing, and claims processing. Built and delivered, not just claimed. FINTECH AND PAYMENTS — Stripe integration, invoicing systems, revenue cycle management, and real-time payment processing. Systems that handle real money with zero tolerance for bugs. E-COMMERCE AND SAAS MVPs — Shopify, custom backends, headless CMS, end-to-end product builds from database to deployed app. WHAT I BUILD: - React and React Native mobile apps for iOS and Android - High-performance web apps with Next.js and MERN stack - REST APIs, third-party integrations, real-time features - Chrome extensions, PWAs, cloud deployments on AWS - Complex dashboards and data-heavy applications AWS CERTIFIED DEVELOPER — ASSOCIATE. I don't just write code — I architect, deploy, and maintain production systems. MY STACK: Frontend: React, Next.js, React Native, TypeScript, Tailwind CSS Backend: Node.js, NestJS, GraphQL, RESTful APIs Databases: MongoDB, PostgreSQL, MySQL, Firebase Cloud: AWS (certified), Google Cloud, Vercel, DigitalOcean

🥇 𝐓𝐨𝐩-𝐑𝐚𝐭𝐞𝐝 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 ✅ 𝟓𝟎+ 𝐀𝐩𝐩𝐬 𝐁𝐮𝐢𝐥𝐭 ✅ 𝟕+ 𝐘𝐞𝐚𝐫𝐬 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐢𝐧 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 ✅ 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 𝐒𝐜𝐨𝐫𝐞 ✅ 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 𝐢𝐎𝐒 & 𝐀𝐧𝐝𝐫𝐨𝐢𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 I’m Rizwan, a 𝐓𝐨𝐩-𝐑𝐚𝐭𝐞𝐝 Mobile App Developer with 𝟕+ 𝐲𝐞𝐚𝐫𝐬 of experience who creates cross platform applications using 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 and 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞. My experience includes developing multiple applications across business and e-commerce solutions to e-learning systems, booking platforms, delivery apps and marketplaces for startups and businesses to launch their ideas. I create applications which provide an excellent user experience while maintaining reliability and scalability. With deep knowledge of 𝐔𝐈 𝐔𝐗 principles, it enables me to develop visually appealing applications that function well and remain simple to maintain. 📌 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐈 𝐎𝐟𝐟𝐞𝐫: ✅ Native & Cross-Platform Mobile App Development Frameworks: Flutter, React Native, FlutterFlow Languages: Dart, Java, TypeScript, Kotlin, Swift IDEs & Tools: Android Studio, Xcode, Visual Studio, VS Code ✅ Backend Development Node.js, Express.js, PHP Laravel, Firebase, Supabase ✅ UI/UX Design Figma, Adobe XD, Sketch ✅ Databases SQLite, MySQL, MongoDB, PostgreSQL, Firebase ✅ AI & Automation OpenAI, ChatGPT, AI-driven automation, Bot Farms, AI Marketing Automation ✅ Project Management & Testing Agile (Scrum/Kanban), Unit Testing, Project Documentation Version Control: Git, GitHub, Bitbucket, SVN Collaboration: Trello, Jira ✅ Deployment & OS Apple App Store, Google Play Store Linux, macOS 📌 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐲-𝐒𝐩𝐞𝐜𝐢𝐟𝐢𝐜 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 ✦ E-commerce & Retail: Scalable stores with smooth catalogs & checkout flows ✦ Fintech: Secure digital wallets, banking apps, and payment gateways ✦ Healthcare: HIPAA-conscious telemedicine & patient platforms ✦ EdTech & SaaS: Interactive learning systems & scalable SaaS solutions ✦ Enterprise & Manufacturing: ERP apps for workflow, inventory, and production management 📌 𝐖𝐡𝐲 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞 ✅ I have delivered more than 50 mobile applications with satisfied clients. ✅ The combination of timely delivery and budget-friendly development produces high-quality apps. ✅ I maintain complete transparency by providing you with updates at every development stage to maximize your return on investment. ✅ I establish long-term business relationships because I help clients build apps and maintain their growth through ongoing support. ✅ 𝐅𝐫𝐞𝐞 𝐂𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧 Thinking about building a mobile app? I offer a free consultation to help you get started the right way. In our session, I’ll walk you through: ✦ Choosing the right technology stack (Flutter, React Native, Firebase, etc.) ✦ Strategies for clean architecture and future scalability ✦ A clear breakdown of cost and timeline based on your project ✦ Practical solutions for API integrations, UI/UX, real-time features, and more Let’s connect to bring your vision to life and turn your idea into a powerful app. Simply click “𝐈𝐧𝐯𝐢𝐭𝐞 𝐭𝐨 𝐉𝐨𝐛” and we can get started. I’d be happy to go through your ideas, suggest tech stack and timelines for your app. 𝑹𝒆𝒍𝒂𝒕𝒆𝒅 𝑲𝒆𝒚𝒘𝒐𝒓𝒅𝒔: mobile app design | mobile application developer | React Native app developer | Mobile app development | Mobile App developer | Flutter | Firebase | Dart | React Native | Node.js | grocery app | pet app | recipe app | cross-platform development | mobile app design | hybrid mobile app | ai mobile app | flutter app | react native app | react native developer | flutter developer | ecommerce app | trading app | senior mobile app developer | ios app developer | ios | android ios developer | android kotlin | android developer | flutter dart android | flutter dart | flutter firebase | flutter flow developer | flutterflow developer | react typescript | ionic | ios swift | flutter ios android | flutter ios | mobile app ui ux designer | mobile ui ux designer | full stack developer | backend developer | saas developer | saas | ecommerce app | progressive web apps | saas ui/ux designer | ui/ux web designer | senior ui/ux designer | ui/ux designer | ui ux | mobile ui ux | ui ux designer figma | ui ux designer | Android | supabase | hybrid app developer | cross platform mobile development | html css javascript | React JS | javascript | Native android | Native iOS | Java | web app design | web app designer