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I specialize in cross-platform mobile app development for Android, iOS and Web Apps powered by Flutter, Firebase, supabase, mongoDB for real-time database, authentication, and cloud functions. Whether it's a custom business app or a scalable mobile solution, I ensure smooth performance, modern UI, and robust backend integration. Alongside app development, I have 8+ years of experience in website development, building responsive websites and custom web applications using WordPress, PHP, and modern frameworks. My web solutions are fast, user-friendly, and optimized for both performance and scalability. I deliver high-quality digital products that are tailored to your goals ensuring great user experience, reliability, and cost-effectiveness.

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 80 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 6 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 .

Certified from Stanford Online to turn ideas into Scalable, Secure, and Smart Digital Solutions Are you looking for a reliable mobile development expert who can help you design, build, and launch a high-performance app — and also support you with full-stack development, AI features, automation, or cybersecurity when needed? You're in the right place. ✅ Trusted by 61+ Clients | Known for Fast Delivery, Clean Code, and Long-Term Support 🌟 Top Rated Plus | 100% Job Success | Highly Recommended by Previous Clients I work closely with startups, entrepreneurs, and product teams to convert bold ideas into robust, scalable, and user-friendly mobile applications — with the option to scale into a full digital solution using my decentralized group of trusted specialists. 🔧 What I Do Best 📱 Mobile App Development No-code/Low-code Development (Bubble, FlutterFlow) Cross-Platform Development (Flutter, React Native, FlutterFlow, Ionic) Native iOS App Development (Swift) Native Android App Development (Java, Kotlin) App Deployment (Android & iOS builds from Flutter, React Native, Ionic projects) 🔹 Feature Support Includes (but Not limited to): Secure Authentication (OAuth2, Firebase Auth, biometrics) Real-time Chat, Notifications, GPS/Map Integration In-app Purchases, Subscriptions, Payment Gateway Integration (Stripe, Razorpay) Offline Data Sync, Analytics Tracking, Push Notifications Scalable backend services with Firebase, Node.js, and custom APIs, GraphQL 🌐 Need More than Mobile? You’re Covered. On Request, I offer end-to-end solutions when your project scales beyond mobile: 💻 Web Development & APIs RESTful API Integration & Custom API Development (OpenAPI, Google APIs, Firebase, etc.) Frontend & Backend Development (Node.js, Firebase, MongoDB, MySQL) Custom dashboard development and third-party API integrations 🔐 Cybersecurity & Web Scraping Secure Code Practices from Day 1 Role-based Access Control (RBAC) Data encryption, Secure API design, Token management Penetration Testing & Security Audits (on request) Data Extraction & Web Scraping using Python, BeautifulSoup, Selenium, and Requests 🤖 AI & Automation Custom AI & ML solutions Custom Data Bots, Form Automation, Workflow Scripts Chatbot Development Smart Recommendations & Chatbot Integration Automation using Python scripts ⛓️ Blockchain Development Ethereum Smart Contracts (Solidity) DApp Integration with Web3 & MetaMask 🌟 Why Choose Me? ✅ 100% Custom-Built Solutions (No templates on Request only) ✅ Clear communication for both technical and non-technical clients ✅ Clean, maintainable code following best practices ✅ Agile development, modular architecture & scalable infrastructure ✅ Automated CI/CD pipelines to reduce time-to-market ✅ Ongoing Support & Post-Launch Maintenance If you're ready to build something impactful, whether it's a high-performance app, secure backend, or innovative AI feature, let’s talk. 📩 Let’s bring your vision to life. Message me today to get started! 🔍 Keywords for Search & Visibility Mobile Development iOS App Developer (Swift) · Android App Developer (Kotlin/Java) · Flutter App Expert · React Native Developer FlutterFlow Developer · Cross-Platform App Development · No-Code / Low-Code App Developer (Bubble, FlutterFlow) Backend & APIs Firebase Backend Developer · Node.js Developer · MongoDB & MySQL Integration · Custom API Development · RESTful API · OpenAPI Integration DevOps & CI/CD CI/CD for Mobile Apps · GitHub Actions · Codemagic · Bitrise · Fastlane · Automated App Deployment (iOS & Android) App Features & Integrations In-App Chat · Push Notifications · Payment Gateway Integration (Stripe, Razorpay) · Maps & GPS · Real-Time Data · Subscriptions & In-App Purchases · User Authentication · Analytics Integration AI, Automation & Data Python Automation Developer · AI Integration · Machine Learning Workflows · Web Scraping Expert (Selenium, BeautifulSoup, Requests) · Data Bots · Script Automation Cybersecurity & Compliance Cybersecurity Consultant · Secure Mobile App Development · App Security & Encryption · Penetration Testing (on request) · OAuth2, JWT, Role-Based Access

Are you looking for an Expert Android Engineer? you are at the right place. I have a strong and deep understanding of Android SDK and Android Mobile App. I'm an independent freelancer. I'm a Native Expert Android Engineer with almost 9 years of experience developing all types of mobile applications using Kotlin and Java. I have experience in Messaging, streaming, voice/video call, Dating, healthcare, Social, e-Commerce, education, etc kind of applications in Android. along with additionally I'm also Expert Spring Boot RESTful APIs Engineer. I have a piece of strong and deep knowledge and understanding of Spring Boot Restful APIs, Routes, Spring Security, SQL Database, Configurations, Services, Controller, and Backend APIs. I'm an independent freelancer. I'm a Native Expert Android Engineer but also have Expertise in Spring Boot and almost 9 years of Industrial Experience developing all types of mobile applications, and RESTful APIs using Kotlin and Java. I have 2+ years of experience in Spring boot. ► Rewarded as 🏆 𝙏𝙤𝙥 𝙍𝙖𝙩𝙚𝙙 𝙋𝙡𝙪𝙨 🏆 by Upwork ► 100% Client Recommendation ► 22+ Client's Dream Projects (39+ projects offline and online) delivered. ► almost 9 Years of Industrial Experience. ► Senior Expert Android Engineer Developer/Backend Engineer Developer ► Excellent knowledge of Android/Java/Kotlin best practices and standard code style ► Experience with SCM tools, GIT, JIRA, Android Studio, ClearCase, etc. ► Strong skills in problem-solving and time management ► Knowledge of testing mobile applications ► Software platforms development experience, such as Linux and Android platform ► Familiar with the Android development toolkit and process. ► Spring Boot/Backend APIs developer Clean code programmer in Kotlin, Java ► Experience with SCM tools, GIT, JIRA, etc. ► Strong skills in problem-solving and time management ► Knowledge of testing APIs ► Spring Boot RESTful API creation ► Laravel RESTful API creation 𝙏𝙚𝙘𝙝𝙣𝙤𝙡𝙤𝙜𝙞𝙚𝙨 ✔ Android ✔ Java ✔ Koltin ✔ Spring Boot Using Java & Kotlin ✔ Laravel ✔ Node JS 𝙎𝙩𝙧𝙤𝙣𝙜 𝙜𝙧𝙞𝙥 𝙄𝙣: ✔ Android SDK ✔ MVC, MVVM ✔ Firebase, FireStore, Firebase Auth ✔ View Binding, Data Binding ✔ RxJava, RxKotlin ✔ RESTful APIs, Retrofit ✔ RxJava, RxKotlin ✔ Room Database ✔ Jira, Git, Github, Gitlab, Bitbucket, Azure DevOps. ✔ Coroutine Coil ✔ Socket IO ✔ Google APIs Integration, Firebase APIs Integration, Third Party APIs Integration ✔ Figma, Adobe XD UI/UX design implementation ✔ UI/UX standards ✔ Knowledge of Spring Framework, Spring MVC, Spring Thymeleaf ✔ Spring Security, JWT Authentication ✔ RESTful APIs ✔ MySql Database, JPA, Hibernate, Hibernate Caching, Database structure ✔ MicroServices, MicroServices from Different Servers too ✔ Apache Tomcat Server, Publishing APIs to Live Server, Publishing Website to Live Server ✔ Creating SSL, Making a Website with HTTPS 𝙏𝙤𝙤𝙡𝙨 𝙄 𝙖𝙢 𝙪𝙨𝙞𝙣𝙜 𝙛𝙤𝙧 𝙙𝙚𝙫𝙚𝙡𝙤𝙥𝙢𝙚𝙣𝙩 & 𝙘𝙤𝙢𝙢𝙪𝙣𝙞𝙘𝙖𝙩𝙞𝙤𝙣 ✔ Android Studio ✔ Xcode ✔ Jira ✔ TFS ✔ Jenkins ✔ Github/Bitbucket/SVN/Gitlab ✔ SQL Server ✔ Microsoft team ✔ Assana ✔ Trello ✔ Slack 𝙒𝙝𝙮 𝘾𝙝𝙤𝙤𝙨𝙚 𝙢𝙚? ✔ Native Android with Clean Code Structure. ✔ Strong Android architecture and database knowledge ✔ Almost 9 Years of Experience in Developing Mobile Apps. ✔ Develop applications that support all devices ✔ 100% product security assurance. ✔ Delivering the products on/before time ✔ 1-month FREE support. ✔ High Quality of work ✔ Always up-to-date with the latest technologies ✔ Spring Boot RESTful APIs with Clean Code Structure. ✔ Strong MySQL architecture and database knowledge 𝙀𝙭𝙥𝙚𝙧𝙩𝙞𝙨𝙚 𝙄𝙣 : ✔ Interaction with backend APIs - Restful, JSON, XML, PHP, .Net ✔ Databases / Data Management - SQLite, MySQL, Parse, MongoDB ✔ Social Media Integration - Facebook, Twitter, Youtube, Instagram ✔ Chat - XMPP, Socket, Firebase, Pub-Nub ✔ Version Control Tools - Github, SVN, Bitbucket, GitLab ✔ Google Maps, Geolocation, GPS, Location Tracking Spring Boot : ✔ Knowledge of Spring Framework, Spring MVC, Spring Thymeleaf ✔ Spring Security, JWT Authentication ✔ RESTful APIs ✔ MySql Database, JPA, Hibernate, Hibernate Caching, Database structure ✔ MicroServices, MicroServices from Different Servers too ✔ Apache Tomcat Server, Publishing APIs to Live Server, Publishing Website to Live Server ✔ Creating SSL, Making a Website with HTTPS 𝙖𝙣𝙮 𝙦𝙪𝙚𝙨𝙩𝙞𝙤𝙣? 𝙄𝙣𝙫𝙞𝙩𝙚 𝙢𝙚 𝙖𝙣𝙙 𝙖𝙨𝙠 𝙢𝙚. ► Always online via Upwork messages.

🏆 𝗧𝗢𝗣 𝗥𝗔𝗧𝗘𝗗 PLUS 𝗠𝗢𝗕𝗜𝗟𝗘 𝗔𝗣𝗣 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗘𝗥 🏆 --------------------------------------------------------------- Expertise - Flutter ! Native ! Kotlin ! Swift ! Java ! Dart ! I have been a professional mobile application developer in Android, iOS, and Flutter for cross-platform for 11+ years, and I am very familiar with mobile application development. During my 11+ years as a mobile application developer, I created many live apps on google and the apple app store. I am Full time freelancer. I always strive to be the best individual that I can be and take every challenging opportunity as a chance to learn and grow. Couple of reasons why hire me: * Unlike other great developers, I know how important it is to keep an open communication channel, updated you for a single update on time, finish products on or before time. * I've started developing mobile applications 10 years ago. By now, I was exposed to different areas of science (not only computer science), so when you need not only a coder, but also someone that thinks logically/analytically, I'm your guy. * Even though my rate may seem high, I can assure you that I'm efficient and spending time purely on planning and development. I'm never charging for anything not directly connected with project.

🏅 I’m Individual Freelancer . 🏅 Started programming in 2019. I'm Shilkan Patel, a proficient native Android developer with more than 4 years of experience in Java and Kotlin-based mobile app development. I'm committed to making your ideas a reality and offering support all the way through the creation of your project until it is prepared for launch. Services Provided: 🔰 Design and development of native mobile applications 🔰 Mobile app bug fixes and UI enhancements 🔰 Proficiency in mobile app development using Flutter 🔰 Develop and maintain a mobile application from scratch using Flutter 🔰 Providing support for an agreed-upon period for the developed application 🧑‍💻Programming Languages: 🎗Java 🎗Kotlin 🎗Flutter ⚙️Good skills⚙️ ✅ Kotlin + JAVA (with Coroutines) + MVVM + MVC ✅ View & Data Binding ✅ All permissions in manifest ✅ Analytics & Catalytic ✅ Creating applications for multiple screen resolutions/sizes ✅Understanding and using guidelines, Material Design, common UI/UX patterns ✅ Open-source libraries: Dagger 2, Retrofit , ButterKnife , FFMPEG . ✅ Video processing And reverse engineering ✅Integrations with social networks (fakebook, google, twitter) ✅ Code versioning Bitbucket, GitHub ✅ Flutter I'm dedicated to your happiness and delivering great results. Thank you for considering me. - Shilkan Patel