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Nand Kishore C.
$25/hr
100% Job Success
$40K+ earned
Offers consultations
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Transforming Ideas into Stunning Cross-Platform Experiences I am an Expert Mobile App Developer, a true maestro in crafting exceptional mobile applications that leave clients in awe. With over 5 years of hands-on experience and the prestigious title of Senior Developer, Technical Architect, and Team Lead, I am your go-to expert for turning ideas into innovative, user-friendly, and highly efficient mobile solutions. My Expertise at a Glance: 1. Flutter, FlutterFlow and React Native Guru: I wield the power of Flutter, FlutterFlow and React Native with finesse, creating mobile applications that redefine excellence. 2. A Versatile Tech Arsenal: From Dart to Firebase, Google Maps API integration, Rest API’s, Mobile UI design, Payment gateways, Java, stripe integration, Git, Gitlab, BitBucket, and more, I have an extensive toolset at my disposal. 3. React and React Native Brilliance: My mastery extends to React and React Native, enabling me to deliver cutting-edge, cross-platform solutions. 4. Full-Stack Wizardry: I am not just a developer; I'm a full-stack wizard. My proficiency spans Ruby, Ruby on Rails, databases (relational and NoSQL), background job processing, RESTful APIs, third-party API integrations, and more. 5. Impeccable Process: I adhere to the highest standards, practicing TDD/BDD with RSpec, Cucumber, Capybara, and maintaining automated data scraping capabilities even from sites without APIs. 6. Cloud Expert: With AWS expertise and Rails app deployment on platforms like Heroku, Amazon EC2, Linode, and Digital Ocean, I ensure your apps are always on the cutting edge. 7. Client-Side Magic: I bring client-side technologies to life with React.js, Vue.js, JavaScript, HTML, Bootstrap, and CSS, crafting rich, interactive interfaces. 8. Version Control Authority: I command SVN and GIT with workflows like GitFlow and GitHub Flow. 9. React Native Brilliance: As a Mobile Developer, I excel in React Native, providing highly optimized applications. As a seasoned Team Lead, I am your trusted advisor, skillfully splitting, prioritizing, and delegating tasks, while offering expert guidance to developers. I thrive on challenges, possess rock-solid problem-solving skills, and excel under pressure. My ability to work independently without constant supervision ensures seamless project execution. The journey from concept to reality begins with a single step, and I'm here to take that step with you. Let's turn your vision into a groundbreaking mobile application that sets the bar higher than ever before. I eagerly await your response
Nand Kishore C. has worked .
GemsEssence Infotech pvt ltd
Associated with
GemsEssence Infotech pvt ltd
Shaman K.
$25/hr
97% Job Success
$80K+ earned
Available now
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I help startups, founders, and businesses build production-ready mobile apps and web platforms from React Native & Flutter apps to Laravel backends, SaaS dashboards, and API integrations. Top Rated Plus | 5,000+ Hours. Whether you need an MVP built from scratch or an existing platform improved and scaled, I cover the full stack- mobile frontend, web frontend, backend APIs, database design, server deployment, and third-party integrations. What I can build for you: Mobile Apps • React Native apps for iOS & Android • Flutter cross-platform mobile apps • Social platforms, marketplace apps, booking systems • Push notifications, real-time features, in-app payments Web & Backend • Laravel backend APIs and admin panels • React.js web apps and SaaS dashboards • Multi-tenant platforms, CRM systems, LMS platforms • REST API development and third-party integrations Integrations & Payments • Stripe & PayPal payment gateway integration • Firebase authentication and real-time database • Google Maps, Twilio, and third-party APIs • Meta (Facebook/Instagram) API integrations Tech Stack: • Mobile: React Native, Flutter • Frontend: React.js, JavaScript, HTML, CSS • Backend: Laravel, Node.js, PHP • Database: MySQL, PostgreSQL, Firebase • DevOps: Linux servers, Nginx, SSL, deployment • Payments: Stripe, PayPal • APIs: REST, GraphQL, Google Maps, Twilio What you can expect working with me: • Clean, scalable architecture from day one • Clear communication throughout the project • Reliable delivery, no disappearing acts • Full support from idea to launch and beyond • Comfortable working in existing codebases, not just greenfield projects I work best with startups, product owners, and growing businesses that need a reliable developer who understands both the technical and business side of building software. If you have a mobile app or web platform you need built, improved, or scaled, I'd be happy to discuss your project.
Ditinus Technology – Top-Rated Software Development Agency | Web & Mobile App Solutions for Startups & Enterprises
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Ditinus Technology – Top-Rated Software Development Agency | Web & Mobile App Solutions for Startups & Enterprises
Rupinderpal S.
$20/hr
99% Job Success
$60K+ earned
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My UPWORK achievements : āœ…Hours Logged: 3860+ āœ…Delivered jobs: 12+ ( 99% JSS Top Rated ) āœ…JSS: 99% with TOP RATED PLUS Badge. Committed to delivering top-notch quality Mobile App and services. 7+ years of experience in Next.js, React.js & React Native, HTML 5, JavaScript, CSS3, UI/UX, development. Also I have 3+ years of experience in Artificial Intelligence, Machine Learning, LLM, Data Science, Firebase, Sentry, AWS, SQLite, PostgreSQL, MongoDB etc. I can Also Help with: Integrating Restful API | Third-party API | Push notifications | Google map, GPS, and location views | Social Media integration Proven freelance experience. I'm completely aware of the end-to-end process of submitting apps to app stores and work with you to resolve all your queries. My core competencies are excellent programming skills and good communication So let's talk!
Rupinderpal S. has worked .
Zestgeek Solutions Private Limited
Associated with
Zestgeek Solutions Private Limited
$1M+
earned
Amit G.
$25/hr
97% Job Success
$100K+ earned
Available now
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ā­ļø Top Rated Plus – Top 2% on Upwork āœ… Official FlutterFlow Expert Partner āœ… Published on the FlutterFlow Marketplace āœ… 6+ years building scalable mobile apps šŸ•’ 100+ apps delivered | 6+ years | 6,000+ hours You have an app idea, a product that needs fixing, or a feature that needs shipping. I build it in Flutter or FlutterFlow, faster than you expect, cleaner than you hoped, and ready for the App Store and Google Play from day one. I have delivered 100+ mobile apps across health, fintech, marketplace, SaaS, and AI verticals. Three of my apps are live in the stores right now. I am one of the few developers with a published component on the official FlutterFlow Marketplace, which means I do not just use the platform, I build for it. šŸ“± Flutter and FlutterFlow Development:- Cross-platform iOS and Android apps from a single codebase. Pixel-perfect UI that matches your designs. Rapid FlutterFlow MVPs or fully custom Flutter builds. Complex animations, responsive layouts, and production-ready architecture. Apps that look great, load fast, and do not break in production. šŸ”„ Firebase and Supabase Backend:- Firestore data modelling, Firebase Auth, Firebase Storage, Cloud Functions, real-time listeners, offline persistence, and push notifications via FCM. Supabase for relational backends, row-level security, real-time subscriptions, and Edge Functions. I have built backends that scale quietly and never surprise you. šŸ¤– AI-Powered Features:- OpenAI GPT-4o integrations, AI chatbots, image recognition, Whisper speech-to-text, voice assistants, smart recommendations, personalised feeds, AI search, and embeddings. I have shipped AI features across 50+ projects. Real intelligence, not buzzwords. šŸ’³ Payments and Subscriptions:- Stripe, Stripe Connect, RevenueCat, Apple IAP, and Google Play Billing. Subscription paywalls, one-time purchases, marketplace split payments, escrow flows, and in-app purchase restore. I have implemented payments on 100+ projects and know every edge case. šŸ”Œ Integrations I have shipped many times:- REST and GraphQL APIs, Node.js backends on Vercel, WebSocket and real-time socket integrations, Google and Apple sign-in, Auth0, OAuth 2.0, FCM push notifications, deep linking, Xano, Airtable, Twilio SMS, Google Maps, Mapbox, and third-party SDKs of all kinds. šŸš€ App Store and Google Play:- Full submission, metadata, screenshots, compliance, and approval management for both stores. I handle the entire process so you do not have to learn App Store Connect or Play Console to ship your app. šŸ† Why 100+ founders have trusted me:- Top Rated Plus with a 100% Job Success Score. MVPs delivered in 4 to 8 weeks. Daily written updates and Loom walkthroughs so you always know where things stand. I challenge bad assumptions early so your budget does not get wasted later. I have never missed a milestone without telling you in advance. Long-term clients refer their friends because the work holds up. šŸŽÆ I am the right fit if you are:- A startup founder building your first Flutter or FlutterFlow app and need it done right the first time. A product team adding AI features to an existing mobile app. A founder who has been burned by a previous developer and needs someone reliable to take over and ship. A business that needs Firebase or Supabase architecture designed properly before it causes problems at scale. šŸ“© Send me a message or invite me to your job. I respond within a few hours and I will tell you honestly whether I am the right fit before we start.
Amit G. has worked .
Ankush C.
$14/hr
100% Job Success
$20K+ earned
Available now
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I help startups, founders, and businesses turn ideas into scalable mobile applications that users actually love to use. Over the last 7+ years, I have developed and launched mobile applications for startups, SaaS companies, IoT products, and growing businesses using React Native, Flutter, Node.js, AI integrations, and cloud technologies. šŸŽÆTop 5% in app design & development on Upwork šŸŽÆ 100% Job Success (Client Satisfaction Ratio) šŸŽÆHelped companies reduce operational time by up to 50% šŸŽÆRewarded as šŸ† š—§š—¢š—£ š—„š—”š—§š—˜š—— šŸ† by Upwork Unlike developers who simply write code, I focus on building products that are: āœ… Launch-ready āœ… Scalable from day one āœ… Designed for growth āœ… Optimized for performance āœ… Built with long-term maintainability in mind What I Can Help You Build šŸ“± Custom Mobile Applications • React Native Apps • Flutter Apps • Native iOS & Android Apps • Cross-Platform Applications šŸ¤– AI-Powered Applications • ChatGPT Integrations • AI Chatbots • Recommendation Engines • AI Content Generation • NLP-Based Features 🌐 Startup MVP Development • Product Architecture • Rapid MVP Development • SaaS Mobile Applications • Marketplace Platforms • Subscription-Based Apps šŸ’³ Payment & Subscription Systems • Stripe • PayPal • Apple Pay • Google Pay • In-App Purchases • Subscription Management šŸ“” IoT & BLE Applications • Smart Device Integration • Bluetooth Low Energy (BLE) • Wearables • Real-Time Monitoring • Sensor-Based Applications ☁ Backend & Cloud Infrastructure • Node.js • Express.js • MongoDB • PostgreSQL • Firebase • AWS • REST APIs • GraphQL Why Clients Hire Me āœ” Clear communication throughout the project āœ” Product-focused approach āœ” Clean and maintainable code āœ” Fast turnaround without sacrificing quality āœ” Reliable project delivery āœ” Long-term support after launch šŸ’š Let’s connect and turn your app idea into a reality! React Native | Flutter | iOS Development | Android Development | Mobile App Development | Cross-Platform Development | Hybrid App Development | Native App Development | Expo | FlutterFlow | JavaScript | TypeScript | React.js | Node.js | Full Stack Development | AI Integration | ChatGPT API | OpenAI API | Machine Learning | NLP | Chatbot Development | IoT | BLE | Bluetooth Low Energy | Payment Gateway Integration | Stripe | PayPal | Google Pay | Apple Pay | Firebase | AWS | App Store Optimization | App Store Deployment | Play Store Deployment | Push Notifications | REST API | GraphQL | Redux | Zustand | Next.js | MongoDB | PostgreSQL | MySQL | UI/UX Implementation | Dashboard Development | Admin Panel Development | Testing | Performance Optimization | API Integration | MVP Development | SaaS Development #MobileAppDevelopment #ReactNative #Flutter #iOSAppDevelopment #AndroidAppDevelopment #CrossPlatformApps #AIIntegration #Firebase #StripeIntegration #PayPalIntegration #AppStoreRelease #PlayStoreRelease #UXDesign #MVPDevelopment #IoTIntegration #BLEApps #Chatbots #OpenAI #TensorFlowLite #TopRatedFreelancer #CI_CD #DevOps #Docker #PushNotifications #RealTimeApps #CustomMobileApps
Ankush C. has worked .
ELYRIA SOFTWARE PRIVATE LIMITED
Associated with
ELYRIA SOFTWARE PRIVATE LIMITED
$900K+
earned
Rushin G.
$18/hr
100% Job Success
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⭐⭐⭐⭐⭐ š—§š—¢š—£-š—„š—”š—§š—˜š—— š—£š—Ÿš—Øš—¦ šØš§ š”š©š°šØš«š¤ ⭐⭐⭐⭐⭐ š‚šžš«š­š¢šŸš¢šžš š‰šššÆššš¬šœš«š¢š©š­ šƒšžšÆšžš„šØš©šžš« ⭐⭐⭐⭐⭐ šŸ•+ š˜šžššš«š¬ šØšŸ š„š±š©šžš«š¢šžš§šœšž ⭐⭐⭐⭐⭐ šŸ–šŸŽšŸŽšŸŽ+ š‡šØš®š«š¬ š–šØš«š¤šžš ⭐⭐⭐⭐⭐ $šŸšŸŽšŸŽšŠ+ šžššš«š§š¢š§š  šØš§ š”š©š°šØš«š¤ šŸ™‹ā€ā™‚ļø šŒš² š–šØš«š¤š¢š§š  šš«šØšœšžš¬š¬: šŸ’Ž Listen to your needs šŸ’Ž Prepare Flow chart šŸ’Ž Provide suggestions šŸ’Ž Divide work in phases šŸ’Ž Prepare Sketch/Wireframe šŸ’Ž Designing Frontend šŸ’Ž Developing Backend šŸ’Ž Quality Assurance šŸ’Ž Get Feedback šŸ’Ž Unlimited Revision šŸ’Ž Lifetime Support šŸ’Ž 100% Satisfaction šŸ™‹ā€ā™‚ļø šˆš§šš®š¬š­š«š¢šžš¬ šˆ'š¦ šš«šØšŸš¢šœš¢šžš§š­ š¢š§: āœ… Online Food Delivery App āœ… Healthcare āœ… Financial App āœ… Educational Portal āœ… Multivendor E-commerce Store āœ… ERP and CRM System āœ… Saas Product āœ… Real Estate āœ… Tour & Travel āœ… Recruitment Agency šŸ™‹ā€ā™‚ļø šŒš² š‚šØš«šž š’š¤š¢š„š„š¬ ššš§š š„š±š©šžš«š­š¢š¬šž: šŸ‘‰ šŒš² ššššœš¤šžš§š š’š¤š¢š„š„š¬: šŸ’Ž Node.js - JavaScript runtime for backend šŸ’Ž Express.js - Web app framework for Node šŸ’Ž Nest.js - Framework for Node with TypeScript šŸ’Ž Next.js - Framework for universal React apps šŸ‘‰ šŒš² š…š«šØš§š­šžš§š š’š¤š¢š„š„š¬: šŸ’Ž React - Library for building UIs šŸ’Ž TypeScript - Typed superset of JavaScript šŸ‘‰ šƒššš­ššš›ššš¬šžš¬: šŸ’Ž MongoDB - NoSQL database šŸ’Ž PostgreSQL - Object-relational SQL database šŸ’Ž MySQL - Object-relational SQL database šŸ‘‰ š”šˆ š‹š¢š›š«ššš«š¢šžš¬: šŸ’Ž Tailwind CSS - Utility-first CSS framework šŸ’Ž Material UI - React components library šŸ’Ž Ant Design - React components library šŸ’Ž Chakra UI - Modular React UI components šŸ‘‰ š’š­ššš­šž šŒššš§ššš šžš¦šžš§š­ ššš§š š€š®š­š”šžš§š­š¢šœššš­š¢šØš§: šŸ’Ž Redux/Redux-Thunk - Centralized state management šŸ’Ž React Context API - Internal state management šŸ’Ž NgRx - State management for Angular šŸ’Ž Auth0 - Authentication as a service šŸ‘‰ š…šØš«š¦š¬ ššš§š š•ššš„š¢šššš­š¢šØš§: šŸ’Ž React Hook Form - Forms library šŸ’Ž Formik - Forms library šŸ’Ž Yup - Form validation šŸ‘‰ š‘šžššš„-š­š¢š¦šž š‚šØš¦š¦š®š§š¢šœššš­š¢šØš§ ššš§š šŒšžš¬š¬ššš š¢š§š : šŸ’Ž GraphQL - Query language for APIs šŸ’Ž Socket.io - Realtime communication šŸ’Ž MQTT - Lightweight messaging protocol šŸ‘‰ šƒššš­šš š†š«š¢šš¬ ššš§š š•š¢š¬š®ššš„š¢š³ššš­š¢šØš§: šŸ’Ž Ag-Grid - Data grid component šŸ’Ž Chart.js - Charting library šŸ’Ž ApexCharts - Charting library šŸ‘‰ šƒššš­šš š‡ššš§šš„š¢š§š  ššš§š šƒššš­ššš›ššš¬šžš¬: šŸ’Ž TypeORM - ORM for SQL/NoSQL databases šŸ’Ž Redis - In-memory data store šŸ‘‰ šƒšžš¬š¢š š§ š“šØšØš„š¬: šŸ’Ž Figma - Prototyping tool šŸ’Ž Adobe XD - Prototyping tool šŸ‘‰ š…š¢š«šžš›ššš¬šž: šŸ’Ž Firebase Firestore šŸ’Ž Firebase Realtime Database šŸ’Ž Firebase Cloud Storage šŸ’Ž Firebase Cloud Functions šŸ’Ž Firebase Authentication šŸ’Ž Firebase App Check šŸ’Ž Firebase Hosting šŸ‘‰ š€š–š’ š’šžš«šÆš¢šœšžš¬: šŸ’Ž AWS S3 šŸ’Ž AWS SES šŸ’Ž AWS SNS šŸ’Ž AWS Amplify šŸ’Ž AWS EC2 šŸ’Ž AWS RDS šŸ’Ž AWS Lambda Functions šŸ’Ž Google Cloud šŸ‘‰ š€ššÆššš§šœšžš š’š¤š¢š„š„š¬: šŸ’Ž PWA Support (Service Worker) šŸ’Ž i18n (Localization / Multi-Language Support) šŸ’Ž Real-time Update Capabilities šŸ’Ž Two-Factor Authentication (2FA) šŸ’Ž Role-Based Access Control (RBAC) šŸ‘‰ šŒš² š“šžš¬š­š¢š§š  šš«šØšœšžš¬š¬: šŸ’Ž Functional testing šŸ’Ž Integration testing šŸ’Ž Regression testing šŸ’Ž User acceptance testing (UAT) šŸ’Ž Usability testing šŸ’Ž Unit testing with Karma and Jasmine šŸ’Ž E2E testing with Cypress šŸ‘‰ šŒšØš›š¢š„šž š€š©š©š„š¢šœššš­š¢šØš§ šƒšžšÆšžš„šØš©š¦šžš§š­ šŸ’Ž Android App šŸ’Ž IOS App šŸ’Ž Backend Development šŸ™‹ā€ā™‚ļø š–š”š² š‚š”šØšØš¬šž šŒšž? - known for delivering high-quality results efficiently without compromising on precision. - thrive in collaborative environments contributing positively to team dynamics and project success. - possess excellent communication skills to facilitate seamless collaboration and understanding within the team. I am available to work 40+ hours/week. Would you be available for a quick chat or call? With Regards Rushin
Rushin G. has worked .
Yash V.
$18/hr
94% Job Success
$50K+ earned
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āœ”ļøŽ šŸ•+ š˜šžššš«š¬ of Experience in šŒšØš›š¢š„šž & š–šžš› Development āœ”ļøŽ šŸ“šŒ+ $ šŸš®š§šš¢š§š  raised by clients āœ”ļøŽ šŸ‘šŒ+ ššš©š© ššØš°š§š„šØšššš¬ | šŸ‘šŸŽ+ š©š®š›š„š¢š¬š”šžš ššš©š©š¬ āœ”ļøŽ ššØšØš¬š­šžš šš«šØšš®šœš­š¢šÆš¢š­š² š›š² šŸ’šŸŽ% using AI Tools like GitHub Copilot & Cursor šŸŽØĀ šŒš®š„š­š¢š©š„šž šƒšžš¬š¢š š§ šˆš­šžš«ššš­š¢šØš§š¬ Until 100% Satisfaction Guaranteed
 āš”Ā šŸ­ š—›š—¼š˜‚š—æ š—„š—²š˜€š—½š—¼š—»š˜€š—² š—§š—¶š—ŗš—² | Available šŸ­šŸ“ š—›š—¼š˜‚š—æš˜€/š——š—®š˜† š‘ššš§š¤šžš š€š¦šØš§š  🌟 š“šØš© šŸ% šŒšØš›š¢š„šž šƒšžšÆšžš„šØš©šžš«š¬ šØš§ š”š©š°šØš«š¤ I help startups and businesses build šŒš•šš¬, prototypes, and full-scale apps šŸš— š…ššš¬š­šžš« saving 50%+ in time and cost while delivering šˆš§šÆšžš¬š­šØš«-š‘šžšššš², š’šœššš„ššš›š„šž š’šØš„š®š­š¢šØš§š¬. 🧠 š“šžšœš”š§š¢šœššš„ š„š±š©šžš«š­š¢š¬šž: ------------------------------ šŸ”¹ Frameworks: Flutter, FlutterFlow, Dart, React Native šŸ”¹ Mobile Platforms: Android, iOS, Native SDKs šŸ”¹ AI/ML & Deep Learning: Python, NumPy, Pandas, Scikit-learn, TensorFlow, PyTorch, Computer Vision šŸ”¹ AI Integration: OpenAI (GPT), LangChain, Dialogflow, ElevenLabs, Deepgram šŸ”¹ Backend & DB: Firebase, Supabase, Node.js, PHP, Strapi, MongoDB, MySQL, SQLite šŸ”¹ API Integration: REST, GraphQL, JSON, XML šŸ”¹ Payments: Stripe, Razorpay, Braintree, PayPal šŸ”¹ Real-Time Features: Chat, WebSocket, Push Notifications, In-App Purchases šŸ”¹ Cloud & DevOps: AWS, Azure, Google Cloud, GitHub/GitLab/Bitbucket šŸ”¹ Multimedia & Sensors: Live Streaming, GPS, QR/NFC, iBeacon, Audio/Video šŸŒ š—œš—”š——š—Øš—¦š—§š—„š—œš—˜š—¦ š—¦š—˜š—„š—©š—˜š——: ------------------------------ šŸ›ļø š‘šžš­ššš¢š„ & šžš‚šØš¦š¦šžš«šœšž | šŸ„ š‡šžššš„š­š”šœššš«šž | šŸ’° š…š¢š§š­šžšœš” šŸ” š‘šžššš„ š„š¬š­ššš­šž (šˆšƒš—/šŒš‹š’) | šŸŽ“ š„šš®šœššš­š¢šØš§ | 🚚 š‹šØš š¢š¬š­š¢šœš¬ & š“š«ššš§š¬š©šØš«š­ šŸ­ šŒššš§š®šŸšššœš­š®š«š¢š§š  | šŸØ š“š«šššÆšžš„ & š‡šØš¬š©š¢š­ššš„š¢š­š² | ⚽ š’š©šØš«š­š¬ & šš®š¬š¢š§šžš¬š¬ š€š©š©š¬ ----------------------------------------------- šŸ† Why Clients Love Working With Me: ----------------------------------------------- ✦ Daily updates + fast communication ✦ Clean, scalable code & modern UX ✦ Strong mobile + web architecture ✦ On-time delivery & post-launch support free ✦ Flexible with timezone & project scope Let’s build something great — message me with your idea, and I’ll help bring it to life.
Yash V. has worked .
Hammad  A.
$35/hr
99% Job Success
$100K+ earned
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šŸ† AI Reliability Architect for AI-Native Productivity & SaaS šŸ“± Flutter AI Systems (iOS • Android • Web) 🧠 Persistent Memory & RAG Engineering āš™ļø LLM Orchestration & AI Infrastructure Design āœ… Free AI System Audit Consultation AI productivity apps don’t fail because of the UI. They fail because memory breaks. Context disappears. AI outputs become inconsistent. Mobile latency kills retention. Founders bring me in when their AI-native app works beautifully in a demo, but becomes unreliable in real-world usage. Where AI Productivity Apps Break If you're building: • Voice-to-task AI apps • AI workflow automation tools • Mobile AI agents • Enterprise AI productivity platforms And facing: • Context retention failures • Weak vector retrieval accuracy • LLM hallucination or inconsistent outputs • Slow AI responses on mobile • Sync conflicts across devices • Governance & compliance concerns That’s rarely just a model issue. It’s an architecture issue. What I Actually Build I combine 5+ years of enterprise Flutter architecture ($100k+ earned on Upwork) with production-grade AI engineering. I architect AI-native productivity systems using the right stack, not just random API glue. šŸ“± Frontend (Mobile & Cross-Platform) • Flutter (Clean Architecture, SOLID, MVVM) • Riverpod / Bloc for state management • WebSockets / real-time sync • Offline-first design • Performance tuning for low-latency AI UX 🧠 LLM & AI API Orchestration • OpenAI API (GPT-4o, embeddings), Anthropic Claude, Google Gemini • Function calling & tool usage pipelines • Structured output enforcement (JSON schema validation) • Deterministic response layering & Guardrails to reduce hallucination šŸ“š RAG & Vector Systems • Pinecone, Weaviate, Supabase Vector, PostgreSQL + pgvector • Custom embedding pipelines • Retrieval tuning (chunking strategy, re-ranking, hybrid search) šŸ—‚ Persistent Memory Architecture • Session memory + long-term memory layers • Structured memory graphs & Event-based memory storage • Context summarization pipelines • Cross-device state synchronization ā˜ļø Backend & Infrastructure • Firebase (Auth, Firestore, Functions) & Supabase • Node.js / Python microservices • REST & GraphQL APIs • Multi-tenant architecture & RBAC for enterprise The Goal: AI Reliability When AI is inconsistent: Users churn. Workflows break. Enterprise deals stall. When AI becomes stable, contextual, and fast: Retention increases. Daily active usage scales. My focus is measurable retention uplift through stable memory systems, retrieval accuracy, deterministic LLM orchestration, and low-latency Flutter UX. This is AI reliability engineering, not surface-level integration. Who I Work With • Seed to Series B AI productivity startups • B2B SaaS founders building AI-native workflows • Enterprise-focused automation platforms (Note: I do not take on generic, brochure-style mobile app builds. I partner with serious product teams solving retention and reliability at scale.) Authority & Track Record • $100,000+ earned on Upwork building scalable mobile systems • Technical founder-level thinking • Proven production AI systems shipped āœŒļø SOUND LIKE A FIT? NEXT STEPS: If your AI productivity app feels unstable, inconsistent, or slow—let’s fix the foundation. Message me with: Your product Your current AI stack The reliability issues you're facing I’ll tell you exactly what’s breaking, and how we stabilize it.
Hammad A. has worked .
Muhammad S.
$20/hr
100% Job Success
$100K+ earned
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šŸ† Top Rated Mobile App Developer | Mobile App Development | Android App Development | iOS Development | iPad App Development | Flutter Developer | React Native Developer | Swift | Kotlin | AI App Development | šŸ–+ š˜šžššš«š¬ šØšŸ š„š±š©šžš«š¢šžš§šœšž | šŸšŸŽšŸŽ% š‰šØš› š’š®šœšœšžš¬š¬ | 9šŸŽK+ š‡šØš®š«š¬ | šŸšŸ“šŸŽ+ šš«šØš£šžšœš­š¬ š‚šØš¦š©š„šžš­šžš | $šŸšŸŽšŸŽšŠ+ š„ššš«š§šžš Helping startups, entrepreneurs, and businesses build scalable, high-performance mobile applications with startup-friendly budgets. Our expertise includes Mobile App Development, AI App Development, Android App Development, iOS App Development, Flutter Development, React Native Development, Cross-Platform App Development, Full-Stack Development, Hybrid App Development, Native App Development, and MVP Development. I specialize in Flutter, React Native, Android, iOS, Kotlin, Swift, and SwiftUI, building secure, scalable, and production-ready applications with clean UI/UX, robust architecture, and optimized performance for Android, iPhone, and iPad platforms. I provide end-to-end services, from product planning and UI/UX implementation to development, testing, deployment, and ongoing maintenance. My expertise includes User Authentication, User Profile Creation, In-App Purchases, Payment Gateway Integration, API Integration, Firebase Integration, Mobile App Bug Fixes, App Deployment, Mobile App Development Consultation, and full lifecycle application support. š“šžšœš”š§šØš„šØš š² š’š­šššœš¤ & š„š±š©šžš«š­š¢š¬šž āœ”ļø Mobile App Development: Flutter, React Native, Expo, Dart, Kotlin, Swift, SwiftUI, Android App Development, iOS App Development, Cross-Platform App Development āœ”ļø AI Mobile App Development: OpenAI API, ChatGPT Integration, AI Chatbots, AI Agents, AI Model Integration, Generative AI Applications āœ”ļø Backend & API Integration: Node.js, FastAPI, Flask, REST APIs, GraphQL, Third-Party API Integration āœ”ļø Database & Cloud: Firebase, Cloud Firestore, SQLite, MySQL, MongoDB, Firebase Cloud Functions, AWS, Google Cloud Platform (GCP) āœ”ļø Mobile App Features: User Authentication, Push Notifications, In-App Purchases, Stripe Integration, Google Maps API, Real-Time Chat, Social Media Integration, Analytics, Crash Reporting šˆš§šš®š¬š­š«š¢šžš¬ & š€š©š©š„š¢šœššš­š¢šØš§š¬ I have worked on a wide range of applications including: • Dating App Development • E-commerce App Development • Marketplace App Development • Doctor Booking App Development • On-Demand Apps • FinTech Apps • Health & Fitness Apps • Social Networking Apps • SaaS Mobile Apps • Food Delivery Platforms • Taxi Booking App Developer • AI-Based Mobile Applications • Chat & Messaging Applications š–š”ššš­ š˜šØš® š†šžš­ š–šØš«š¤š¢š§š  š–š¢š­š” šŒšž āœ” 6+ years of real-world mobile app development experience āœ” Clean, scalable, production-ready code āœ” Fast communication and reliable delivery āœ” Strong focus on business goals and user experience āœ” End-to-end support from idea to launch āœ” Long-term support for updates and scaling āœ” Clear development process with regular progress updates šŸ“© š’šžš§š š¦šž š²šØš®š« ššš©š© š¢ššžšš, feature list, or project requirements, and I’ll help you create a clear development roadmap, timeline, and strategy for launching your application successfully. Muhammad Shahzaib š‡š¢š š”š„š¢š š”š­šžš š’š¤š¢š„š„š¬: Mobile App Development | Mobile App Developer | Flutter Developer | React Native Developer | Android App Development | iOS App Development | Cross-Platform App Development | Hybrid App Development | AI Mobile App Development | Full Stack Mobile App Developer | Flutter App Development | React Native App Development | Firebase Integration | Firebase Cloud Firestore | API Integration | REST API Integration | OpenAI API Integration | ChatGPT Integration | MVP Development | Startup MVP Development | Custom Mobile App Development | Mobile UI/UX | App Performance Optimization | App Deployment | User Authentication | Push Notifications | In-App Purchases | Payment Gateway Integration | Stripe Integration | Google Maps API Integration | Real-Time App Development | Marketplace App Development | E-commerce App Development | FinTech App Development | Healthcare App Development | Food Delivery App Development | Dating App Development | Booking App Development | Taxi App Development | SaaS Mobile App Development | On-Demand App Development | Education App Development | Community App Development | Startup App Development | Kotlin | Swift | Dart | Flutter Firebase
Muhammad S. has worked .
Abeer A.
$15/hr
100% Job Success
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šŸš€ Senior Flutter & React Native Mobile Engineer (iOS & Android) I build high-performance, production-ready mobile apps using Flutter and React Native for startups and businesses that need scalable, reliable, and modern mobile products. With 5+ years of experience in Flutter and React Native development, I specialize in building clean, scalable architectures, smooth UI/UX, real-time systems, API integrations, payments, and full App Store & Play Store deployment. I focus on building Flutter and React Native applications that are fast, stable, maintainable, and ready for real users at scale — not just MVP prototypes. What I do: • Flutter & React Native app development • Cross-platform Flutter & React Native apps for iOS & Android • Flutter & React Native UI/UX implementation • Firebase, REST APIs & backend integration in Flutter & React Native • Real-time chat, push notifications & maps integration • Payment gateways & subscription systems • Flutter & React Native app performance optimization • Bug fixing, scaling & maintenance of existing apps • App Store & Google Play Store deployment • Clean architecture & reusable component development • Third-party SDK and native module integration Why clients hire me: āœ” Strong expertise in Flutter & React Native āœ” Clean, scalable, and maintainable code āœ” Performance-focused mobile development āœ” Product + engineering mindset āœ” Clear communication & ownership āœ” Long-term reliable solutions āœ” Experience building production-level Flutter & React Native apps āœ” Fast delivery with attention to quality and stability