Building a successful mobile app requires more than just writing code—it requires a developer who understands performance, scalability, and user experience.
Feel free to send me a message to discuss your project and explore the best solution for your business.
I specialize in developing fast, scalable, and production-ready React Native apps for both iOS and Android. Whether you're building a new product from scratch or improving an existing app, I focus on writing clean, maintainable code that delivers a smooth user experience.
My expertise includes:
• React Native & React.js
• TypeScript & JavaScript
• Firebase (Authentication, Firestore, FCM, Analytics)
• REST APIs & GraphQL
• Redux Toolkit, Zustand & React Query
• Push Notifications
• In-App Purchases
• Maps & Location Services
• Payment Gateway Integration
• App Store & Google Play Deployment
I can also assist with backend development using Node.js when required, making it easier to build complete, end-to-end solutions.
Over the years, I've worked with startups and established businesses across healthcare, logistics, fintech, AI, travel, and e-commerce. My Upwork profile reflects long-term client relationships, successful product launches, and a strong commitment to quality.
What you can expect when working with me:
✔ Clean and scalable code
✔ Fast communication and regular updates
✔ On-time delivery
✔ Long-term support and maintenance
✔ A focus on performance, stability, and user experience
If you're looking for a reliable React Native developer who can take ownership of your project and deliver high-quality results, I'd be happy to discuss your requirements.
Android Studio
Mobile App Development
Firebase
React Native
Node.js
JavaScript
TypeScript
React
API Integration
In-App Purchases
RESTful API
Push Notifications
Web Development
Next.js
Flutter
Python
AWS Lambda
Docker
Apple Xcode
Sagar Nityanand M.
Mumbai, India
$10/hr
4.6
23 jobs
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.
Android Studio
React
Food Delivery Application
App Development
Android App Development
App Design
Android App
Flutter
Firebase
iOS Development
Web Application
React Native
Supabase
MongoDB
Web Application Development
Arvind K.
Dwarka, India
$20/hr
4.9
33 jobs
🏆 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.
Android Studio
Android
Hybrid App Development
Java
Mobile App Development
Flutter
Kotlin
Dart
Swift
Android App Development
Objective-C
React Native
iOS Development
Mobile App
Nikul V.
Surat, India
$21/hr
4.6
16 jobs
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.
Android Studio
Android
In-App Purchases
Kotlin
Android App Development
Social Media Account Integration
Retrofit
API Integration
Android SDK
Jira
Git
Android Room Persistence
Coroutine
Hinal D.
Surat, India
$15/hr
4.3
93 jobs
As a Mobile App Developer with 5+ years of experience who has contributed to mobile applications with over 𝟳𝟬𝗠+ 𝗱𝗼𝘄𝗻𝗹𝗼𝗮𝗱𝘀. I help startups, founders, and enterprises build AI-powered mobile applications for iOS, Android, and Flutter, transforming ideas into scalable, high-performance products from MVP development to App Store and Google Play launch.
I've delivered mobile applications across 80+ projects for clients in 20+ countries, working with startups, growing businesses, and enterprise teams to build products that solve real-world challenges.
- 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲:
Since joining Upwork, I’ve worked across various industries: 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'm always excited to explore new industries - what's your industry?
𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗶𝗻 𝗮𝗿𝗲𝗮𝘀:
- Mobile App Development for iOS, Android
- AI App Development & AI Feature Integration
- Cross-Platform App Development
- MVP App Development for Startups
- Flutter App Development
- iPhone app development
- iPad app development
- Native Android App Development
- AI Chatbot & AI Agent Integration
- RESTful API, GraphQL & Third-Party SDK Integration
- Firebase & Supabase Integration
- Payment Gateway Integration
- Subscription Integration
- Push Notifications & Real-Time Features
- User Authentication & Authorization
- Real-Time Chat & Audio/Video Calling Integration
- Maps, Geolocation & Navigation Integration
- BLE & IoT Device Integration
- Mobile App Feature Enhancement
- App Performance Optimization & Bug Fixing
- App Store & Google Play Publishing
- Ongoing Maintenance & Technical Support
𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 𝗮𝗻𝗱 𝗧𝗼𝗼𝗹𝘀 𝗞𝗻𝗼𝘄𝗹𝗲𝗱𝗴𝗲:
- Dart, Swift, Kotlin, Java
- Flutter, React Native
- SwiftUI, UIKit, Xcode
- Android SDK, Android Studio, Jetpack Compose
- Firebase, Supabase, Firebase Authentication
- Firestore, Firebase Realtime Database, SQLite, Room, PostgreSQL, MongoDB
- BLoC, Provider, Riverpod, MVVM, Clean Architecture
- OpenAI, Claude AI, Google Gemini
- REST APIs, GraphQL, WebSocket
- Google Maps, Mapbox, Geolocation, Geofencing, Deep Linking
- Stripe, RevenueCat, Adapty, Apple Pay, Google Pay, Razorpay, In-App Purchases
- Firebase Cloud Messaging (FCM), OneSignal, Firebase Analytics, AppsFlyer, Mixpanel, Crashlytics
- GitHub, GitLab, Android Studio, Xcode, Jira, Trello, Figma
- 𝗚𝗹𝗼𝗯𝗮𝗹 𝗪𝗼𝗿𝗸 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲:
I have collaborated with clients from many countries including United States, United Kingdom, Germany, India, Australia, Israel, Netherlands, Canada, Hong Kong, Saudi Arabia, Denmark, Jamaica, Luxembourg, Italy, Romania, Kenya, Singapore, Indonesia, Jordan, Spain, Trinidad and Tobago, France, and more around the globe.
I understand the different needs of international markets and love to create easy-to-use applications that meet the unique needs of clients in various industries.
Thanks for visiting my profile.
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Skilled Flutter Developer, Experienced Mobile App Developer, Native Android App Developer, iOS App Developer, iOS Developer, Cross-Platform Flutter App Developer, Top Flutter Developer, React Native, Hire Best Flutter App Developer, Mobile App Development, Skilled Mobile App Developer, RESTful API Developer, API Integration, 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, Ride Booking App, 3rd Party SDK Integration, Realm, SQLite, MySQL, Firebase Cloud FireStore, Realtime Database, Kotlin, Swift, Dart, SwiftUI, Twilio, Mapbox, HealthKit, Alamofire, Google Analytics, Amazon Web Services, DigitalOcean, Core Data, UIKit, MapKit, Smartphone, API integration
Android
Mobile App Development
Mobile App
iOS Development
Android App Development
iOS
AI Mobile App Development
AI App Development
Flutter
SwiftUI
Swift
iPad App Development
Kotlin
Firebase
Node.js
Mobile App Design
Mobile App Development Consultation
iPhone & iPad Apps
Smartphone
User Profile Creation
Shaik Fareed A.
Guntakal Junction, India
$10/hr
5.0
18 jobs
🏆 Top Rated Freelancer
💯 100% Job Success Score
💼 Multiple Successful Projects Delivered
⏱ Proven Track Record with Long-Term Client Collaboration
Hi, I’m Shaik Fareed Ahammad, a Flutter Developer specializing in building high-performance, scalable, and user-friendly mobile applications for Android and iOS.
Over the years, I’ve worked with clients on cross-platform mobile apps, Firebase-powered systems, real-time applications, API integrations, and custom business solutions — helping transform ideas into production-ready mobile products.
I focus on writing clean, maintainable code while delivering smooth UI/UX experiences and reliable app performance.
🚀 What I Can Help You Build
✅ Cross-Platform Mobile Apps using Flutter
✅ Android Applications (Java/Kotlin)
✅ Firebase Integration & Backend Development
✅ REST API Integration
✅ Google Maps & Location-Based Features
✅ Authentication & Push Notifications
✅ Video Calling & Audio Calling Features
✅ Payment Gateway Integration
✅ Admin Panels & Dashboards
✅ Offline Storage & Local Databases
✅ Bug Fixing & App Optimization
✅ Play Store & App Store Deployment
🛠 Technical Expertise
📱 Mobile Development:
Flutter, Dart, Java, Kotlin
🔥 Backend & Cloud:
Firebase, Firestore, Authentication, Storage, Cloud Messaging
🔗 APIs & Tools:
REST APIs, Google Maps API, Git/GitHub, Postman, VS Code, Android Studio, Xcode
🧠 State Management:
Provider
⭐ Why Clients Work With Me
✔ Top Rated Upwork Freelancer
✔ 100% Job Success Score
✔ Strong Communication & Fast Response Time
✔ Clean Architecture & Scalable Solutions
✔ On-Time Delivery
✔ Long-Term Client Support
✔ Focus on Quality & User Experience
Whether you need a complete mobile application, feature upgrades, bug fixes, or backend integration, I’m ready to help bring your project to life with modern and scalable solutions.
📩 Let’s discuss your project and build something amazing together.
Android
Mobile App Development
Flutter
App Development
Firebase
Hybrid App Development
Mobile App
Android App Development
iOS Development
Native App Development
AI Mobile App Development
Mobile App Redesign
Mobile App Improvement
Website to Mobile App Conversion
Mobile App Bug Fix
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