Hire the Best Google App Engine Developers
in India

Are you looking for a Mobile app developer who can design and develop your app for the next millions of users? ARE YOU - Looking for a mobile app development service starting from the design, development to release and publish a mobile app to Play Store and App Store for mobile app users/customers. - Looking for a mobile app developer who can integrate new features into your existing Android app, iOS app or Flutter app based projects? - Individual | Big company | Startup who wants to build and create Android app or iOS app from scratch? - Looking for a mobile app developer who can transform your idea into reality? - Someone who invests in the best so you get better results? If any of that is what you need, message me and I am here to help you. Who am I? - I'm Sagarkumar Surani, a Senior Mobile App Developer with 10+ years of experience and a Master’s degree in Computer Science and Engineering. - I worked with big brands, startups and individuals to create mobile apps for their requirements. My work also got featured a few times in the market store. Apps developed by me have 100 million+ downloads on store and users love to keep the app on their phone as a permanent app. - I’ve worked with clients from over 40 countries, such as the USA, UK, Germany, India, and Australia, which has given me a strong understanding of different international markets. My experience covers a variety of industries, including Travel and Tourism, train ticket booking, transport, educational, hospitality, health & wellness, real estate, live streaming, Marketplace, food & delivery, human resources, fitness, financial & banking sectors, e-commerce, dating, sports, Betting, music/audio, and automotive. I specialize in these high-quality Mobile App Design and Development areas: - Android app development - Kotlin, Java, Android SDK, Android Studio - iPhone app development - Swift, SwiftUI, Objective C, iOS SDK, Xcode - Backend Development | Node.js - Cross Platform Mobile App Development using Flutter, Dart - UI/UX: Mobile design - Mobile & Web app design - UX/UI design - Landing page design Skills : - Have experience developing, releasing & maintaining applications as a Mobile app developer - Strong skills in executing pixel & animation perfect UI's relative to good app performance - Have great communication skills and ability to work with your team - Have a great understanding of MVC, MVP, MVVM and take great care to ensure each project is well-architecture with best practices and easily maintainable so it can be enhanced as feature grows. - The ability to take initiative and work independently with very little supervision - Application requirement analysis - Translating requirements to technical languages In addition to Mobile app development services, my topic areas of expertise include: - Mobile Application Architect - Native Mobile Application Development consultation - Mobile Application UI/UX design using Figma, Adobe XD - Mobile Application backend services Firebase, AWS Mobile Hub - Mobile Application backend development: Node, Express, TypeScript, JavaScript, MongoDB, MySQL, PHP, RESTful API development, Google App Engine - Website development, Web Scraping, Web Admin Panel, CMS Development - Chatbot development, Facebook Messenger If you still think this is right for you, contact me. Thank you in advance for your time and consideration. Kind Regards Sagarkumar Surani P.S. - When you work with me your satisfaction is 100% guaranteed. - Every person who ever worked with me got results. EVER! - Even if you don’t hire me now, keep my profile link in case you need a Mobile App Developer later. FAQ Q: Can you provide maintenance support after development? A: Yes, I provide free of cost maintenance support for 12 months after mobile app development. Q: Can you help with Mobile app design? A: Yes, I offer a Mobile app UX design as an additional service. Q: Can you help with the landing page website for my mobile app product? A: Yes, I can help to build the landing page for a mobile app product. Warmly, Sagarkumar Surani ----------------------------------------------------- Native Android App Developer, iOS App Developer, Cross-Platform Flutter App Developer, Top Flutter Developer, React Native, Hire Best MERN Stack Developer, RESTful API Developer, API Integration, Frontend Developer, React.js, Backend Developer, Nodejs, Javascript, Figma, UI/UX Design, Prototype, In-app purchases, Location, Payment Gateway Integration, Apple Xcode, Android Studio, Push notifications, User authentication, User profile creation, QA, Unit Testing, Regression Testing, Dating App, Ecommerce App, RevenueCat, Adapty, 3rd Party SDK Integration, SQLite, MySQL, Firebase Cloud Firestore, Realtime Database, Kotlin, Swift, Java, Dart, SwiftUI, Twilio, Mapbox, HealthKit, Google Analytics, Amazon Web Services, DigitalOcean, Core Data, UIKit, MapKit, Phone, Full Stack Developer, iPad, OpenAI ChatGPT LLM, ChatGPT API Integration .

⭐ TOP RATED FLUTTER MOBILE APP DEVELOPER | ANDROID • IOS • FIREBASE • AI APPS Need a Flutter developer who can build, scale, and maintain a production-ready mobile app? I help startups, founders, and businesses build high-performance Flutter applications that work seamlessly across Android, iOS, Web, and Desktop. With 3+ years of experience, Top Rated status on Upwork, and multiple successful app launches, I focus on building scalable, maintainable, and business-oriented mobile applications. 🚀 WHAT I CAN BUILD ✔ Flutter Mobile Apps (Android & iOS) ✔ Flutter Web Applications ✔ SaaS MVP Development ✔ Firebase & Supabase Integration ✔ AI-Powered Mobile Applications ✔ Real-Time Chat Applications ✔ E-commerce Applications ✔ Booking & Marketplace Platforms ✔ Social Media Applications ✔ Healthcare & Telemedicine Apps ✔ Education & E-learning Platforms ✔ Sports & Prediction Applications ✔ Business Management Systems ⚡ CORE EXPERTISE • Flutter & Dart • Firebase (Firestore, Authentication, Cloud Functions, FCM) • Supabase • REST APIs & GraphQL • GetX, BLoC, Provider, Riverpod • Clean Architecture & MVVM • Google Maps & Geolocation • Stripe & Razorpay Integration • In-App Purchases & Subscriptions • Push Notifications • AI Integration (OpenAI, ChatGPT, OCR, Voice Features) • CI/CD & Store Deployment 📈 WHY CLIENTS HIRE ME • Clean & Scalable Code • Fast Communication • On-Time Delivery • Strong Problem Solving • Long-Term Support • Business-Focused Development I don't just build apps—I help turn ideas into products that users actually use and businesses can grow. Whether you need an MVP, a complete mobile application, feature development, bug fixing, API integration, Firebase setup, or App Store/Play Store deployment, I can help. Client Feedback:- "It was a good consultation. Sahil understands things in one go. No need to do any repetations. Will 100% work with him in future on more projects." "Had a good time with Sahil. he completed the task within time without any issues and also helped to fix some extra couple of bugs. Will probably work with him in near future." "Sahil did an excellent job on my FlutterFlow project. He was fast, attentive, and solved all the technical issues I needed. His communication was clear and he was always willing to help. I’m very satisfied with the final result and I totally recommend him." "Wanted Sahil to complete a task on immediate basis. He completed task in time . He was very cooperative. He is always available for discussion. I would like to work with him in future." Let's discuss your project and create a clear roadmap for success. Best Regards, Sahil Khunt KEYWORDS: Flutter, Dart, Flutter Mobile App Developer, Dart Developer, OpenAI API, Full Stack Developer, Back End Developers, API, API Developer, Node.js, Node.js Developer, SQL, App Developer, App, Mobile App Development, Mobile App Developer, Android App Development, Android App Developer, Mobile App, AI Mobile App Development, AI Mobile App Developer, Mobile App Design, Mobile UI Design, Responsive Design, UI/UX Designer, Prototyping, Mobile App UI, Mobile App API, Mobile Application, Mobile Application Developer, Mobile Application Developement, iOS, Android, iOS App, Android App, iOS Application, Flutter iOS, Flutter iOS Android, Hybrid App, Hybrid App Development, Hybrid App Developer, Cross Platform Mobile Development, Cross Platform Mobile Developer, Cross Platform App Developer, Cross Platform App Development, Express.js, RESTful API, Express API, API Integration, Mobile App API Integration, App API Integration, Expert Full Stack Developer, Full Stack Mobile App Developer, Expert Full Stack Mobile App Developer, AI Mobile App, Mobile, Application, Application Development, Application Developer, Application Designer, Application API Integration, Build App, Build Mobile App, Flutter App Developer, iOS App Developer, Cross-Platform Mobile Developer, Machine Learning App Integration, Senior Mobile App Developer, Flutter Mobile App Development, Flutter Developer, Software Designer

✮ 18+ years in IT. ✮ Worked with several Fortune 500 Companies ✮ Experienced Full Stack Developer ✮ Worked with British Telecom, AT&T, Google, IBM, etc. ✮ 100% refund policy. ✮ Available 18 hours a day. Prior to this I have worked with several fortunes 500 companies which include British Telecom, AT&T, Google, IBM before start my own freelancing work. Having more than 18+ years rich knowledge in IT and handled more than 3000+ live projects I can guarantee that I will add value to your projects. If I can’t deliver anything I won’t charge for my time, and in this world nobody wants to work for free. [ What I can provide ] ✮ Angular JS 6 Development ✮ Node JS Development ✮ Python Development ✮ React JS ✮ Meteor JS ✮ Express JS / Sails JS ✮ Vue JS ✮ TypeScript ✮ AngularDart ✮ Dart ✮ Mobile App ✮ IOS Development ✮ Android Development ✮ Swift 4 ✮ Java 8 ✮ Objective C ✮ Google Kotlin ✮ React Native ✮ Google Flutter ✮ E-commerce Development ✮ Magento Development ✮ Website development ✮ Mobile Back end development ✮ Graphic design + UI & UX implementation ✮ Consulting in mobile app development ✮ Startup Development I am having strong expertise in database, here is few in the list, ✮ MS SQL ✮ Mongo DB ✮ My SQL ✮ Maria DB ✮ SQL Lite ✮ Amazon Dynamo DB ✮ Amazon Aurora Expertise in Blockchain: ✮ Smart Contracts development using Solidity ✮ Subgraph indexing using the graph ✮ Tokenomics ✮ Vesting ✮ Web3 integration ✮ In-depth knowledge of ERC20 & ERC721 Smart Contracts ✮ NFT contract ✮ Token/ coin Contract ✮ Defi EXchange ✮ BEP1155 ✮ Hardhat ✮ NFT minting Also I am comfortable with Cloud Computing using Amazon AWS, GCloud, MS Azure. Here is my system programming exprience, ✮ Docker ✮ Kubernetes ✮ Jenkins ✮ Google App Engine ✮ Micro Services ✮ Amazon Elastic Container Services ✮ Amazon Elastic Beanstalk ✮ Amazon EBS ✮ Amazon AWS CLI ✮ Elastic Cache ✮ Mem Cache ✮ Redis Cache Also I am comfortable with Analytical information or Search engine development. Here is my informations below, ✮ Apache Solr Search ✮ Amazon Elastic Search ✮ Amazon Red Shift ✮ Kibana ✮ Lucene ✮ Sphinx ✮ Xapian [ My Domain Experience ] ✮ On-Demand Service app ✮ SAAS ✮ Uber-like app ✮ Food delivery website and app ✮ Restaurant website and app ✮ Travel website and app ✮ Social network website and app ✮ Upwork like service marketplace website and app. ✮ Crowdfunding website and app ✮ Service provider finder app ✮ GPS apps ✮ Product selling website and app ✮ Event ticket-selling website ✮ Daily Deal website and app ✮ E-commerce website and app ✮ Dating website and apps ✮ Rideshare apps Also I am comfortable with several open source system, like follows, ✮ Magento ✮ WordPress ✮ Drupal I love my job as working with different clients has given me the opportunity of being a part of so many wonderful ideas and journeys. My approach to work is to go beyond the job description and focus on building a long lasting relationship with all clients.

In today’s market, you need more than just a developer; you need a 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭 who leverages the latest in 𝐀𝐈-𝐝𝐫𝐢𝐯𝐞𝐧 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 to slash delivery timelines without compromising on code quality. With over 𝟏𝟐,𝟎𝟎𝟎+ 𝐡𝐨𝐮𝐫𝐬 and 𝟕𝟓+ 𝐬𝐮𝐜𝐜𝐞𝐬𝐬𝐟𝐮𝐥 𝐥𝐚𝐮𝐧𝐜𝐡𝐞𝐬, I combine 10+ years of deep .NET expertise with advanced AI workflows (GitHub Copilot, Cursor, and LLM-assisted refactoring) to build enterprise-grade systems in record time. I don’t just write code—I build scalable, enterprise-grade ecosystems. Whether you are migrating a legacy Xamarin app to .NET MAUI or launching a complex IoT platform from scratch, I provide the technical leadership to ensure your product is high-performing, secure, and market-ready. 𝐖𝐡𝐲 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐜𝐡𝐨𝐨𝐬𝐞 𝐦𝐞 𝐟𝐨𝐫 𝐡𝐢𝐠𝐡-𝐬𝐭𝐚𝐤𝐞𝐬 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬? ● 𝐄𝐥𝐢𝐭𝐞 𝐒𝐭𝐚𝐭𝐮𝐬: Top Rated Plus (Top 3% of talent on Upwork). ● 𝐃𝐞𝐞𝐩 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: Master of C#, .NET 8/9/10, Microservices, and SQL Optimization And React Native. ● 𝐍𝐚𝐭𝐢𝐯𝐞 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞: Specialist in .NET MAUI & Xamarin for true native UI/UX. ● 𝐄𝐧𝐝-𝐭𝐨-𝐄𝐧𝐝 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐲: I can lead a full team (UI/UX, Backend, QA) to handle the heavy lifting while you focus on business growth. 🛠 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗣𝗼𝘄𝗲𝗿𝗵𝗼𝘂𝘀𝗲 I specialize in turning complex requirements into clean, maintainable codebases. Mobile Ecosystem: .NET MAUI, Xamarin (Native/Forms), React Native, Flutter, iOS (Swift), Android (Kotlin). ● 𝗘𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: ASP.NET Core 8, Microservices, REST/SOAP APIs, Dependency Injection. ● 𝗗𝗮𝘁𝗮 & 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲: SQL Server expert, MySQL, SQLite, and Database Tuning for high-load apps.
 ● 𝗛𝗮𝗿𝗱𝘄𝗮𝗿𝗲 & 𝗜𝗼𝗧: BLE, NFC, MagStripe, Barcode/QR Scanning, and external device integration. ● 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀: Azure, AWS, Google App Engine, CI/CD (AppCenter, GitHub Actions). ● 𝗖𝗼𝗽𝗶𝗹𝗼𝘁-𝗔𝘀𝘀𝗶𝘀𝘁𝗲𝗱 𝗖𝗼𝗱𝗶𝗻𝗴: Faster implementation of complex algorithms in C# and Other Languages. ● 𝗖𝗹𝗲𝗮𝗻 𝗗𝗼𝗰𝘂𝗺𝗲𝗻𝘁𝗮𝘁𝗶𝗼𝗻: AI-generated technical documentation and API schemas for seamless hand-offs. 🌟 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗲𝗱 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 ● 𝗛𝗲𝗮𝗹𝘁𝗵 & 𝗙𝗶𝗻𝘁𝗲𝗰𝗵: Integration with Apple HealthKit, Google Health Connect, and secure Payment Gateways (Stripe, PayPal, RazorPay). ● 𝗚𝗲𝗼𝘀𝗽𝗮𝘁𝗶𝗮𝗹 & 𝗟𝗼𝗴𝗶𝘀𝘁𝗶𝗰𝘀: Real-time tracking, Fleet Management, and advanced Google/Apple Maps integration. ● 𝗦𝗺𝗮𝗿𝘁 𝗦𝘆𝘀𝘁𝗲𝗺𝘀: IoT Home Automation and Background Data Synchronization for offline-first apps. 📈 𝗣𝗿𝗼𝘃𝗲𝗻 𝗜𝗺𝗽𝗮𝗰𝘁 I have successfully delivered 𝟳𝟱+ 𝗵𝗶𝗴𝗵-𝗶𝗺𝗽𝗮𝗰𝘁 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀,, including: 
 ✔ 𝗟𝗼𝗴𝗶𝘀𝘁𝗶𝗰𝘀: Fleet and Port management systems with real-time tracking. 
 ✔ 𝗛𝗲𝗮𝗹𝘁𝗵 𝗧𝗲𝗰𝗵: Monitoring apps utilizing embedded devices and biometric APIs. 
 ✔ 𝗜𝗼𝗧:Home automation systems with seamless hardware-to-mobile communication. 
 ✔ 𝗥𝗲𝘁𝗮𝗶𝗹: High-performance inventory systems with barcode & MagStripe integration. 🤝 𝗧𝗵𝗲 𝗣𝗮𝗿𝘁𝗻𝗲𝗿𝘀𝗵𝗶𝗽 I operate on an 𝗔𝗴𝗶𝗹𝗲 𝗟𝗶𝗳𝗲𝗰𝘆𝗰𝗹𝗲, ensuring transparency and alignment at every sprint. I am comfortable working across international time zones and collaborating with your internal team or leading the project independently. 𝗧𝗵𝗲 𝗿𝗶𝗴𝗵𝘁 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻 𝗶𝘀 𝗼𝗻𝗲 𝗰𝗹𝗶𝗰𝗸 𝗮𝘄𝗮𝘆. Let’s jump on a quick call to discuss your roadmap and how I can help you scale.

🏅 100% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 𝗦𝗰𝗼𝗿𝗲 | 🏅 𝗢𝘃𝗲𝗿 $300𝗸+ 𝗘𝗮𝗿𝗻𝗲𝗱 | 🏅 9,930+ 𝗛𝗼𝘂𝗿𝘀 𝗪𝗼𝗿𝗸𝗲𝗱 🛡️ Senior Mobile App Developer | iOS & Android • Cross-Platform | Swift • Kotlin • Flutter • React Native Hello, I am a senior mobile app developer with over a decade of experience building high-performance, scalable, and secure mobile applications for businesses across industries. My work focuses on delivering clean, maintainable code, intuitive UI/UX, and robust integrations that ensure long-term reliability and growth. 🔹 Core Technical Expertise Native iOS Development (Swift, SwiftUI, Objective-C) • Advanced UI with SwiftUI • Secure authentication, Keychain, biometrics • In-App Purchases, StoreKit, subscription systems • Push notifications, background tasks, app lifecycle handling Native Android Development (Kotlin, Java) • Jetpack Compose, Material Design • Google Billing, Firebase integration • Secure data handling, encryption, offline caching • Device hardware integrations (GPS, camera, sensors) Cross-Platform Development • Flutter / Dart for fast, consistent multi-platform delivery • React Native for modular, scalable hybrid apps • Adaptive layouts, responsive UI, optimized rendering 🔹 Backend, Cloud & Integrations • Firebase: Auth, Firestore, Cloud Storage, FCM, analytics • Supabase: Auth, Postgres DB, RPC, edge functions • REST APIs, GraphQL APIs, WebSockets • AWS, GCP, Node.js, Python-based backend integration • AI/LLM integrations: OpenAI API, chatbots, voice AI 🔹 Advanced App Features Delivered • Real-time chat, messaging systems • Geo-tracking, mapping, route optimization • Media streaming, audio/video recording • Subscription apps (RevenueCat, Google Billing) • E-commerce app functionality • Custom dashboards, gamification, rewards • Highly secure login & data encryption 🔹 Engineering Process • Clean architecture (MVVM/MVI/Bloc) • CI/CD pipelines, testing, profiling • Milestone-based delivery with transparent updates • App Store & Play Store launch support • Full documentation + post-launch support 🔹 AI & LLM Expertise • OpenAI (GPT-4/5), Claude, Gemini • Prompt Engineering & Optimization • Tool / Function Calling • Autonomous AI Agent Development • Multi-Agent Systems • Retrieval-Augmented Generation (RAG) • Context & Memory Architecture Design 🔹 AI Frameworks • LangChain • LlamaIndex • CrewAI • AutoGen • Semantic Kernel • Hugging Face 🔹 Programming & Backend • Python (Advanced) • FastAPI • REST API Development • Async Programming • API Integration 🔹 Vector Databases & Data Handling • Pinecone • FAISS • ChromaDB • Weaviate • PostgreSQL • MongoDB 🔹 AI Solutions Development • AI Chatbots (Custom & Enterprise) • AI Sales & Lead Qualification Agents • Document Processing & Data Extraction • Knowledge Base AI Assistants • Workflow Automation Systems • AI SaaS Application Development 🔹 Deployment & DevOps • Docker • AWS / GCP • Vercel • CI/CD • Production Deployment & Scaling If you’re seeking a senior, dependable, and highly skilled mobile app developer to build or scale your iOS/Android application, I’d be glad to help you bring your vision to life. Thanks, Eshan Keywords# ------------- Mobile App Development, iOS Development, Android Development, Cross-Platform App Development, Hybrid App Development, Native App Development, React Native Development, Flutter Development, Swift Programming, Java/Kotlin Programming API Integration, UI/UX Design, Database Management, Front-End Development, Back-End Development, Agile Methodology, Git Version Control, App Testing and QA, Firebase Integration, Cloud Services (AWS, Azure) E-commerce App Development, Social Networking App Development, Fitness App Development, Game Development, Educational App Development, Travel App Development, Health & Wellness App Development, Finance/Budgeting App Development, AR/VR App Development, IoT Integration Project Management & Collaboration: Requirement Analysis, MVP Development, Deployment and App Store Submission, Continuous Integration/Continuous Deployment (CI/CD), User Feedback Implementation, Beta Testing "App Developer for Hire", "Freelance App Developer", "Experienced Mobile Developer", "Custom App Development", "Professional App Development Services"

Hello, I am an experienced Vue.JS/Google Apps developer with over 10 years of experience in the industry and 4+ years in Vue alone. I have worked on many vue projects for different companies, big and small including PWA, SSR. Looking forward to accepting another challenge. I use MongoDB, Express, Nuxt.JS, and NestJS in projects. And hosting is done on Google App Engine which is free of cost. If you are looking of high availability, high scalability project then please send me a message. Lets discuss.