Hi, I'm Ranjit — a HIPAA certified mobile and PWA developer who helps healthcare, wellness, and fitness founders turn their web prototypes into production-ready iOS and Android apps without rebuilding from scratch. If you've built something on Lovable, Base44, or Replit and now need it live on the App Store and Play Store, that's exactly what I do. Using Capacitor, I wrap your existing PWA into native iOS and Android apps — preserving your codebase, cutting your timeline by 60–70%, and giving you full access to native features (push notifications, camera, HealthKit/Google Fit, biometric auth, in-app purchases, background sync). Where I focus: Women's Health & Fertility — IVF/IUI cycle tracking, period & ovulation logging, clinic portals, telehealth flows Gym & Fitness — Coaching apps, workout tracking, multi-location gym management (attendance, billing, trainer portals) Wellness & Nutrition — Mindfulness, habit tracking, meal planning, hydration, sleep Healthcare adjacent — HIPAA-aware data handling, secure auth, EHR/clinic integrations What you get working with me: A working app on TestFlight / Internal Testing within 2–3 weeks (typical PWA-to-mobile conversion) Full App Store and Play Store submission handled end-to-end (certificates, provisioning, store listings, review responses) Native features bolted on cleanly — push notifications (Firebase/OneSignal), offline mode, biometric login, native sharing, deep linking Code that your future team can actually maintain — clear structure, documentation, and a deployment guide My stack: React Native, Capacitor, Ionic, React, Next.js, TypeScript, Firebase, Supabase, REST/GraphQL APIs, Stripe/RevenueCat for subscriptions. I respond within a few hours, work in overlap with US/EU time zones, and I'd rather start with a 20-minute discovery call than send you a generic proposal. If you've got a PWA, prototype, or web app that needs to become a real mobile product — let's talk.

𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 𝐀𝐩𝐩 𝐋𝐚𝐮𝐧𝐜𝐡 & 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐬𝐭 I help 𝐬𝐭𝐚𝐫𝐭𝐮𝐩𝐬 𝐚𝐧𝐝 𝐟𝐨𝐮𝐧𝐝𝐞𝐫𝐬 𝐟𝐢𝐧𝐢𝐬𝐡, 𝐩𝐨𝐥𝐢𝐬𝐡, 𝐚𝐧𝐝 𝐬𝐮𝐜𝐜𝐞𝐬𝐬𝐟𝐮𝐥𝐥𝐲 𝐥𝐚𝐮𝐧𝐜𝐡 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 𝐚𝐩𝐩𝐬 for iOS and Android, Specialized in 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 𝐂𝐋𝐈, 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭-𝐛𝐚𝐬𝐞𝐝 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧 𝐚𝐩𝐩𝐬, 𝐔𝐈 𝐫𝐞𝐟𝐢𝐧𝐞𝐦𝐞𝐧𝐭, 𝐟𝐞𝐚𝐭𝐮𝐫𝐞 𝐜𝐨𝐦𝐩𝐥𝐞𝐭𝐢𝐨𝐧, 𝐚𝐧𝐝 𝐀𝐩𝐩 𝐒𝐭𝐨𝐫𝐞 𝐬𝐮𝐛𝐦𝐢𝐬𝐬𝐢𝐨𝐧 𝐢𝐧𝐜𝐥𝐮𝐝𝐢𝐧𝐠 𝐓𝐞𝐬𝐭𝐅𝐥𝐢𝐠𝐡𝐭 and release builds. If your app is 80–90% complete but not ready for launch, I step in to finalize, optimize, and ship it properly. Many React Native projects reach 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐜𝐨𝐦𝐩𝐥𝐞𝐭𝐢𝐨𝐧 𝐛𝐮𝐭 𝐬𝐭𝐫𝐮𝐠𝐠𝐥𝐞 𝐰𝐢𝐭𝐡 𝐭𝐡𝐞 𝐟𝐢𝐧𝐚𝐥 𝐬𝐭𝐚𝐠𝐞 𝐔𝐈 𝐩𝐨𝐥𝐢𝐬𝐡, 𝐞𝐝𝐠𝐞-𝐜𝐚𝐬𝐞 𝐛𝐮𝐠 𝐟𝐢𝐱𝐞𝐬 , onboarding flow improvements, performance optimization, release configuration, and store submission. That final 10–20% is where I specialize. 💼 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 React Native CLI (not Expo-only builds) React Native with TypeScript iOS & Android production development Pixel-perfect UI implementation from Figma UI polish & premium UX refinement Feature completion & code refactoring REST API integration (JWT, OAuth, Bearer authentication) React Navigation (Stack, Tabs, Deep Linking) Secure authentication & token handling Performance optimization & debugging TestFlight configuration & App Store submission Google Play release & deployment 📱 𝐢𝐎𝐒 𝐑𝐞𝐥𝐞𝐚𝐬𝐞 & 𝐀𝐩𝐩 𝐒𝐭𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 Hands-on experience with: Xcode release builds & archive configuration Provisioning profiles & signing certificates App Store Connect setup TestFlight beta distribution App Store review process & rejection resolution Production deployment workflow 🛠 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐒𝐭𝐚𝐜𝐤 React Native 0.7x / 0.8x TypeScript React Navigation Firebase Supabase / PostgreSQL Node.js / REST APIs Push Notifications CI/CD mobile pipelines 𝐖𝐡𝐚𝐭 𝐘𝐨𝐮 𝐂𝐚𝐧 𝐄𝐱𝐩𝐞𝐜𝐭 Clean, maintainable production-ready code Clear communication & fast response Strong attention to performance & stability 𝐎𝐧-𝐭𝐢𝐦𝐞 𝐝𝐞𝐥𝐢𝐯𝐞𝐫𝐲 Focus on real-world launch success I don’t just build mobile apps I help you ship stable, scalable React Native products ready for real users. If you need a React Native developer who understands launch, release builds, and production deployment let’s connect.

Have an app idea? I'll turn it into a market-ready product fast. With 5+ years of experience and 150+ apps delivered, I help founders, startups, and growing businesses launch high-quality mobile apps that users actually love without blowing the budget or missing deadlines. Whether you need an MVP to validate your idea quickly, or a full-scale app ready for the App Store and Play Store, I handle everything end-to-end: strategy, design, development, testing, and launch. WHAT I BUILD ✦ React Native & Flutter hybrid apps (iOS + Android from a single codebase) ✦ Native iOS apps (Swift/SwiftUI) & Android apps (Kotlin) ✦ MVP Development validate fast, launch faster ✦ E-commerce Apps (cart, checkout, Stripe/PayPal payments) ✦ On-Demand Apps (ride-hailing, food delivery, booking systems) ✦ Real Estate Apps (MLS listings, agent tools, property search) ✦ AI-powered mobile apps (chat, smart automation, AI features) ✦ PWA & cross-platform web apps CORE FEATURES I DELIVER ✦ Secure payments Stripe, PayPal, Apple Pay ✦ Real-time GPS & Google Maps integration ✦ Push notifications & in-app chat/messaging ✦ Social login (Google, Apple, Facebook) & secure authentication ✦ Offline-first apps with background sync ✦ Clean UI/UX design with smooth 60fps animations ✦ CI/CD pipelines for automated builds & deployments ✦ App Store & Google Play Store submission & compliance WHY CLIENTS CHOOSE ME ✦ 150+ successful projects delivered across startups and enterprises ✦ 5+ years of specialized mobile development experience ✦ Bug-free, production-ready code not just prototypes ✦ Clear communication and on-time delivery, every time ✦ Post-launch support I don't disappear after delivery ✦ I think like a product owner, not just a developer 📞 Ready to build something great together? Send me a message with your app idea and let's discuss how to bring it to life. I offer a free 30-minute discovery call for serious projects.

We’re a two-person development team passionate about transforming ideas into fully functional, high-quality mobile apps. Over the past years, we’ve delivered 20+ successful apps across different industries from finance and real estate to on-demand services and booking systems. What makes us different: - Clear communication and quick delivery - Modern, clean UI/UX design - Scalable and maintainable code - Full project support: from design to deployment Tech stack: Flutter, Kotlin, Java, Swift, Dart, Firebase, MongoDB, REST APIs, Figma, node.js Whether you’re a startup or a company looking to upgrade your app we’ll make sure you get a smooth, reliable, and beautiful product. Let’s discuss your idea today we respond within a few hours.

Flutter & React Native developer with 42+ completed projects and 1,271+ hours on Upwork — helping startups go from concept to App Store without the typical delays, miscommunication, or technical debt. My Focus: cross-platform mobile apps (iOS & Android) built with Flutter or React Native, backed by clean Node.js/Firebase architecture. Whether you're validating an MVP in 4 weeks or scaling a SaaS product to 10,000+ users, I deliver production-ready code that ships. What I specialize in: → Startup MVPs built fast without cutting corners (SaaS, on-demand, consumer apps) → Flutter apps with Firebase, Supabase, PostgreSQL backends → React Native apps with full API integrations (Stripe, OpenAI, Google Maps, Twilio) → Lovable.dev + AI-powered product prototyping and rapid UI generation → App Store + Google Play deployment, end-to-end → Rescue projects — I've rebuilt and fixed broken apps from other developers AI & Modern Tools I work with: → OpenAI GPT / Assistants API → Gemini AI / Claude AI integrations → Lovable.dev for AI product prototyping → Cursor AI & AI-assisted development workflows → Firebase AI features & Supabase AI stack → Whisper AI, text-to-speech, voice assistants → AI chatbots, recommendation systems & automation flows Recent results: → Delivered BookBound mobile app (iOS/Android + back office) — 260 hours, 5-star review → Built Eurologica cross-platform solution over 6+ months — 5-star, "amazing mobile app developer" → Delivered iOS Low-Code App Transformation ($1,630 fixed price, 5-star) Message me your biggest technical concern about this project. I'll respond within 4 hours with a straight answer.

Senior Flutter & Android Developer| Building Scalable Mobile & Backend Solutions With over 4 years of expertise in Flutter (Dart) Android (Kotlin) and backend development Portfolio & Live Work: sagarjamdhade.netlify.app i help startups and businesses build scalable, high-performance mobile applications with Flutter, Kotlin, and modern backend systems. My apps are optimized for performance, security, and great UI/UX , I help entrepreneurs and businesses turn their visions into high-performance scalable mobile applications seamlessly integrated with robust backend systems. I deliver complete, future-proof solutions. I have successfully launched apps for clients in Germany and Canada focusing on clean architecture smooth user experience and on-time delivery. ✅ What I Do Best • Cross-platform apps with Flutter (Dart) • Native Android apps with Kotlin & Java • Modern Android frameworks: Jetpack Compose, MVVM, Hilt • Firebase (Firestore, Realtime DB, Push Notifications, Cloud Messaging) • REST API integration, Google Maps, Room & SQLite 💻 Backend Development Expertise • Languages & Frameworks: Node.js, Express.js, Java (Spring Boot), PHP (Laravel), Python (Django/Flask) • Databases: MySQL, PostgreSQL, MongoDB, Firebase • APIs: RESTful APIs, GraphQL • Cloud & Hosting: AWS, Google Cloud, Heroku • Authentication & Security: JWT, OAuth2, Firebase Auth 🎯 Why Clients Choose Me End-to-end solutions: Mobile + Backend Clean, maintainable, and scalable code Strong problem-solving & optimization skills On-time delivery & clear communication Let's connect to discuss how we can build an application that not only meets your users' needs but also scales with your business growth. Sagar Jamdhade Senior Flutter &Android Developer

I work on web applications where performance, structure, and long-term maintainability actually matter. My experience is primarily around building and improving full-stack applications using React, Node.js, and PHP, with a strong focus on backend systems, APIs, and database design. Over the years, I’ve contributed to: -SaaS platforms with role-based access, subscriptions, and dashboards -API-driven applications integrating third-party services (including cloud storage like Google Drive) -Business platforms requiring structured data flow and reporting -Web applications that needed performance optimization and backend restructuring 💡 A recent example includes integrating backend services with external storage systems while maintaining clean architecture and test-driven practices. ⚙️ What I usually handle: -Designing and developing REST APIs -Structuring backend logic using Node.js or PHP (Laravel) -Managing databases (MongoDB, MySQL) with optimized queries -Connecting frontend (React / Next.js) with stable backend systems 🧠 My approach is simple: -Build systems that are easy to extend -Keep backend logic clean and predictable -Avoid shortcuts that create problems later I’m comfortable working on both new builds and existing codebases, especially when stability, integrations, or performance need attention. If your project depends on reliable backend systems, structured APIs, and a solid full-stack foundation, I can contribute effectively.

AI-First Full-Stack Engineer | 13+ Years Building Intelligent Systems ✔ 1000+ Hours of Proven Excellence ✔ 100% Job Success | 100% Client Recommendation ✔ 100% Long-term Collaborations ✔ Scalable, High-Performance Solutions With 13+ years of full-stack experience and a sharp pivot into AI engineering, I build intelligent, production-ready systems — from LLM-powered SaaS platforms to autonomous AI agents and computer vision pipelines. I don't just integrate APIs; I architect solutions where AI is the core product, not an afterthought. What I Build with AI: ▪ LLM-Powered Apps (GPT-4o, Claude, Gemini, Mistral, LLaMA) ▪ RAG Systems & Custom Knowledge Bases (LangChain, LlamaIndex, Pinecone, Weaviate) ▪ AI Agents & Multi-Agent Workflows (AutoGen, CrewAI, LangGraph) ▪ Fine-Tuning & Prompt Engineering (OpenAI, Hugging Face, LoRA/PEFT) ▪ AI Chatbots, Copilots & Virtual Assistants ▪ Computer Vision & OCR Pipelines (OpenCV, YOLO, Tesseract) ▪ Voice AI Apps (Whisper, ElevenLabs, Deepgram) ▪ AI Automation & Intelligent Workflow Builders (n8n, Zapier + AI) ▪ Predictive Analytics & ML Model Deployment (scikit-learn, TensorFlow, FastAPI) ▪ AI-Integrated SaaS MVPs & B2B Platforms Full-Stack Backbone (AI needs great infrastructure): Frontend: ReactJS, NextJS, Angular, VueJS Backend: NodeJS, Python (Django, Flask, FastAPI), ASP.Net Mobile: React Native, Flutter, Native iOS/Android Databases & Vector Stores: PostgreSQL, MongoDB, MySQL, Firebase, Pinecone, Chroma Cloud & DevOps: AWS (SageMaker, Lambda), Google Cloud (Vertex AI), CI/CD Pipelines AI/ML Stack: LangChain, LlamaIndex, OpenAI SDK, Hugging Face, LangGraph, CrewAI, Ollama Industries I've Built AI Solutions For: ▪ FinTech — AI fraud detection, smart financial assistants ▪ Healthcare — HIPAA-compliant AI document processing, clinical summarization ▪ Ecommerce — AI-powered recommendation engines & product search ▪ Legal & HR Tech — Contract analysis, AI resume screeners ▪ Real Estate — Intelligent listing assistants & market prediction ▪ Education — AI tutors, personalized e-learning systems ▪ Logistics — Predictive routing & intelligent supply chain tools ▪ SaaS & B2B — AI copilots embedded into core products Why Clients Choose Me for AI Projects: ▪ I architect AI pipelines end-to-end — not just prompt wrappers ▪ Strong focus on accuracy, cost efficiency, and latency optimization ▪ LLM evaluation, testing, and hallucination mitigation built-in ▪ Transparent, async-friendly communication ▪ Flexible engagements: Fixed, Hourly, Dedicated, or Hybrid Whether you're launching an AI-native startup, embedding LLMs into your existing product, or need to rescue a stalled AI project — I'm your partner from architecture to deployment. Drop a message — let's turn your AI vision into a working product.

I help startup founders and established businesses launch high-quality iOS, Android, Web, and cross-platform apps fast. As a senior mobile developer, I’ve shipped dozens of apps using SwiftUI, React Native, React Web, Kotlin, Unity, Firebase, AWS, and Azure, including an AR app for NASA’s Visitor Center at Goddard. Whether you’re building an MVP, adding features, or integrating with cloud services, I bring solo execution and clean delivery. No bloated teams. No hand-holding required. Recent and notable work: • NASA: Unity-based AR app for iOS and Android • iOS startups: Social and animation-sharing apps • AI integrations: OpenAI, Hugging Face, RAG, and API workflows • React Web apps with backend integrations • AR/VR product visualization tools • Firebase Functions and Azure cloud apps • Published apps on App Store and Google Play Clients hire me for: • Full app builds from scratch • Debugging and scaling existing codebases • Fast turnaround on scoped deliverables U.S.-based | Rutgers CS graduate (4.0 GPA) | Available for hourly or fixed-scope work

I am a Senior mobile and web developer with 6 years of experience in developing and deploying both IOS and Android apps. I have developed and released apps to both App Store and Google Play. My expertise mainly in Flutter, AI powered mobile app development, Firebase, OpenAI integration, MongoDB, NodeJS and AWS. I have developed not only mobile apps, but also admin panels to manage these apps. My mission is to deliver value to my clients and to provide solutions for there business problems and gaps. Digitizing businesses is my main vision and I am always I willing to go the extra mile beyond my customer’s expectations. I build end to end apps for existing business and startups and I also provide digital business solutions for companies. Some systems that I have built: 1- ERP 2-CRM 3-Inventory management 4-POS systems Mobile apps built: 1- ecommerce 2- Social Apps 3- Trucking and transportation apps. Some of the key features my apps includes: 1- Authentication(Facebook, Twitter, LinkedIn, Google,etc) 2- Phone verification 3- Push Notifications 4- Google Maps integration 5- Real time updates 6- Chatting engine 7- Payments gateways 8- Firebase Services 9- In App Purchases 10- Camera access 11- Images storage 12- Ad Mob integration 13- QR Code Scanner 14- REST API 15- AI powered mobile apps 16- OpenAI integration If you have a business and want to establish a digital presence, you've come to the right place. Additionally, if you have a business or a company and need to streamline your daily operations by digitizing processes, you are in the right place as well.