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$15/hr
100%
Job Success
$4K+ earned
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Your Partner in Turning Startup Ideas into Market-Ready Apps.
I am a Senior Mobile Engineer specializing in taking ideas from 0 to 1 using the power of Flutter and FlutterFlow.
🚀 Why work with me?
✅ Speed to Market: I leverage FlutterFlow for rapid prototyping and MVP launches while using custom Flutter code for complex business logic.
✅ Full-Stack Thinking: I design robust backends using Firebase and Supabase, ensuring your app scales from 10 to 10,000+ users seamlessly.
✅ Monetization Ready: Expert in integrating RevenueCat, Stripe, and Lemon Squeezy to get your revenue flowing from day one.
✅ Clean & Scalable: I focus on clean architecture and maintainable code, so your app is ready for future growth and investor due diligence.
🛠 My Technical Arsenal:
✅ Frontend: Flutter (Mobile, Web, Desktop), FlutterFlow Expert.
✅ Backend & Cloud: Firebase (Functions, Firestore, Auth), Supabase (Edge Functions, RPC).
✅ Advanced Features: Real-time Chat, Push Notifications, Geolocation, and AI Integration.
✅ Payments: Subscription models, One-time purchases, Global payment gateways.
How I can help your startup:
✅ MVP Development: Launch your product in weeks, not months.
✅ App Scaling: Transitioning from a simple prototype to a high-performance production app.
✅ Rescue Missions: Fixing bugs, optimizing slow apps, and improving UX in existing projects.
I understand the startup hustle. I value clear communication, hitting deadlines, and most importantly - building a product your users will love.
Ready to bring your vision to life? Let’s hop on a call and discuss your project!
Shakhob T.
has worked
.
$27/hr
100%
Job Success
$20K+ earned
Offers consultations
Start of list.
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⭕ Are you looking for a Mobile app expert who builds apps like a technical cofounder, not just a coder?
Hi, I’m Mughees, a Top-Rated, Top 𝟭𝟬% Upwork Mobile app Developer with over 𝟲 years of product development experience, 50+ Projects, and recognition from 𝐆𝐨𝐨𝐠𝐥𝐞, 𝐆𝐢𝐭𝐋𝐚𝐛, 𝐚𝐧𝐝 𝐌𝐚𝐣𝐨𝐫 𝐋𝐞𝐚𝐠𝐮𝐞 𝐇𝐚𝐜𝐤𝐢𝐧𝐠. I don’t just build apps, I help startups ship real products, raise investment, and scale.
Whether you’re a startup launching your first app or an established business looking to upgrade, I specialize in creating apps that are secure, future-proof, and designed to engage users. My development approach focuses on:
- Clean Architecture
- Smooth Performance
- Stunning UI/UX Design
𝗠𝘆 𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲
I specialize in hybrid and cross-platform app development, ensuring a seamless experience across multiple devices. My technical stack includes:
🔹 Mobile App Development: Flutter, FlutterFlow, React Native, Swift
🔹 Backend & API Development: Node.js, Firebase, Python, RESTful APIs
🔹 UI/UX & Custom Designs: Material Design, iOS Human Interface Guidelines
🔹 Scalability & Performance Optimization: Firebase, Cloud Functions, AWS
🔹 3rd-Party Integrations: Payment Gateways, Social Auth, Google Maps, AI/ML
🔹 Security & Compliance: Data Encryption, Authentication, HIPAA Compliance
Let’s Build Something Fundable
You don’t need 5 average developers, you need one who executes like a CTO.
Let's talk and bring your vision to life.
I’ll help you launch, scale, and stand out faster than you think.
𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗙𝗹𝘂𝘁𝘁𝗲𝗿 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿
Mughees P.
has worked
.
Ukraine
$25/hr
100%
Job Success
$50K+ earned
Available now
Offers consultations
Start of list.
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📱 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗙𝗹𝘂𝘁𝘁𝗲𝗿 | 𝗔𝗻𝗱𝗿𝗼𝗶𝗱 | 𝗶𝗢𝗦
I am a Senior Mobile App Developer with 7+ years of professional experience in Flutter, Android, and iOS development, delivering scalable, high-performance mobile applications for startups, SaaS companies, and growing businesses worldwide.
I specialize in full-cycle mobile app development using Flutter, Android, and iOS, building production-ready, scalable, and maintainable applications with clean architecture and modern UI/UX. My goal is to create reliable mobile products that scale smoothly and perform flawlessly.
All communication, documentation, and delivery are handled in fluent English, ensuring efficient collaboration with international teams.
🔹 Mobile App Development | Flutter | Android | iOS
I provide end-to-end mobile app development services using Flutter, Android, and iOS, covering the entire product lifecycle — from idea validation to App Store & Google Play release.
Core Services:
✔ Flutter Mobile App Development
✔ Android App Development (Kotlin / Java)
✔ iOS App Development (Swift / SwiftUI)
✔ Cross-Platform Mobile App Development
✔ Scalable Mobile Application Architecture
✔ MVP & Enterprise Mobile App Development
What I deliver:
• Pixel-perfect UI implementation from Figma
• Clean architecture & modular codebase
• Backend & REST API integration
• Firebase & real-time features
• Payments, subscriptions & in-app purchases
• Performance optimization & testing
• App Store & Google Play publishing
🔹 Flutter App Development (Dart)
I am a Senior Flutter Developer with extensive hands-on experience in cross-platform mobile app development using Flutter.
✔ 50+ production Flutter apps
✔ Cross-platform Flutter apps for iOS & Android
✔ Clean Architecture (BLoC, Riverpod, Provider)
✔ Firebase integration (Auth, Firestore, Functions, FCM)
✔ REST API & real-time systems
✔ Fast MVP development with Flutter
Flutter enables rapid development, excellent UI performance, and scalable architecture, making it ideal for startups and enterprise-grade applications.
🔹 iOS App Development (Swift / SwiftUI)
Professional native iOS app development using Swift and SwiftUI, following Apple best practices and Human Interface Guidelines.
✔ Native iOS App Development
✔ Swift & SwiftUI Architecture
✔ In-App Purchases & StoreKit
✔ Push Notifications
✔ Secure storage & biometric authentication
✔ App Store submission & optimization
I build stable, optimized, and secure iOS applications with long-term scalability.
🔹 Android App Development (Kotlin / Java)
Expert native Android app development using Kotlin & Java, optimized for performance, scalability, and reliability.
✔ Native Android App Development
✔ Kotlin & Java architecture
✔ Offline-first mobile architecture
✔ Firebase, REST APIs & Stripe
✔ Google Play publishing & compliance
I ensure high performance, clean architecture, and seamless UX across modern Android devices.
🔹 Backend & API Integration for Mobile Apps
I provide robust backend solutions optimized for mobile applications.
✔ Firebase (Auth, Firestore, Functions, FCM)
✔ REST API integration
✔ Stripe payments & subscriptions
✔ Admin dashboards
✔ Real-time analytics & monitoring
Backend systems are fully optimized for Flutter, Android, and iOS mobile applications.
🔹 Industries & App Types
• Fitness & Health Apps
• FinTech & Payment Systems
• Marketplaces & Booking Platforms
• SaaS & Business Automation
• Social & Community Apps
• AI-powered Mobile Applications
• Enterprise Mobility Solutions
🔹 Tech Stack
Flutter | Dart | Android | Kotlin | Java | iOS | Swift | SwiftUI | Firebase | REST API | Node.js | PHP | Stripe | Supabase | PostgreSQL | App Store Connect | Google Play Console | Mobile UI/UX | Cross-Platform Development
🔹 Why Clients Choose Me
✔ Senior-level mobile architecture
✔ High-quality clean code
✔ Pixel-perfect UI implementation
✔ Fast MVP delivery
✔ Strong communication
✔ Long-term support & scalability mindset
💬 Have a mobile app idea or existing project? Let’s discuss your requirements and build a scalable mobile solution
Volodymyr S.
has worked
.
$15/hr
100%
Job Success
Offers consultations
Start of list.
End of list.
I build Flutter apps that real people use — including government safety apps live on the Play Store with over 1 million downloads. Recently I've specialized in AI-powered apps: ChatGPT-style assistants with streaming responses, image understanding (vision), and voice input using OpenAI, Gemini, and Claude APIs.
Just this month, I took two client apps from broken builds to LIVE on both the Google Play Store and Apple App Store — handling everything from bug fixes and Firebase configuration to Apple review rejections and final approval.
Other recent work includes an AI chat app with real-time streaming (SSE), an AI health companion that reads glucometer photos and analyzes meal images, and a complete arena booking & finance system on Firebase. My background also includes native Android (Kotlin/Java) from building public safety and surveillance systems for the Punjab Safe Cities Authority — mission-critical apps where crashes are not an option.
What I can help you with:
AI integration — ChatGPT/Gemini/Claude assistants with streaming, vision & voice
Flutter app development (Android, iOS, Web)
App deployment to Google Play Store and App Store — including fixing rejections
Firebase integration (Authentication, Firestore, Push Notifications)
Bug fixing, performance optimization, and app stabilization
REST API integration and backend connectivity
Real-time features and live data handling
Clean, responsive UI for all screen sizes
MVP development for startups (Flutter or FlutterFlow)
Technical expertise:
Flutter & Dart
AI APIs — OpenAI (GPT), Google Gemini, Anthropic (Claude): streaming (SSE), vision, secure key handling
Kotlin & Java (Native Android)
Firebase (Auth, Firestore, FCM)
REST APIs and JSON integration
State Management (Provider, GetX, BLoC)
SQLite and local storage
Google Maps integration
Why clients work with me:
Proven at scale — my apps serve over a million users
Production-quality code, not quick hacks
Reliable communication and clear updates
I finish what I start — including the painful store-approval process
Whether you need AI features in your existing app, a full new app, bug fixes, or help getting your app published, I deliver clean, stable solutions ready for real users.
Let's discuss your project.
Muhammad Y.
has worked
.
$25/hr
100%
Job Success
$2K+ earned
Available now
Start of list.
End of list.
I’m a Flutter developer with 4 years of experience building, fixing, and scaling Android and iOS apps using Flutter and Firebase.
I help startups and businesses:
Build Flutter apps from scratch
Fix bugs and performance issues in existing apps
Implement clean UI from Figma or designs
Integrate Firebase authentication, Firestore, and real-time features
Connect REST APIs and third-party services
Prepare and publish apps to the App Store and Play Store
I’ve delivered Flutter apps in domains like ride-sharing, prayer times, productivity tools, and utility apps, focusing on stability, scalability, and fast delivery.
I communicate clearly, work efficiently, and deliver clean, maintainable code — not quick hacks.
Tech stack:
Flutter, Dart
Firebase (Auth, Firestore, Storage, Realtime DB)
REST APIs, Push Notifications
Google Maps
State Management (Provider, Riverpod, Bloc)
Native Code implementation (Swift UI , Kotlin)
If you need a reliable Flutter developer for a small task or a long-term project, feel free to invite me.
Syed A.
has worked
.
$20/hr
100%
Job Success
$40K+ earned
Available now
Offers consultations
Start of list.
End of list.
🏆 Top Rated Flutter Developer helping startups build scalable iOS & Android apps with Firebase, AI, and production-ready architecture.
· 100% Job Success | $40K+ earned | 700+ hours
· 20+ apps delivered across fintech, health, social, and e-commerce
If you're building a mobile product that needs to ship fast, scale reliably, and actually get used, I build it.
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Most mobile developers hand you a codebase. I hand you a product, architected to grow, tested to perform, and built so your next developer won't rewrite everything from scratch.
I work primarily in Flutter with Clean Architecture and BLoC as my default. Every app I ship is maintainable from day one.
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AI INTEGRATION
☉ OpenAI / Gemini / Claude API (chat assistants, smart recommendations)
☉ On-device ML with TensorFlow Lite and ML Kit
☉ OCR and AI-powered document scanning
☉ Voice recognition and image analysis
☉ Predictive features and personalization layers
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WHAT I BUILD
✅ Cross-platform Flutter apps (iOS, Android, Web), MVP to production
✅ FlutterFlow development and FlutterFlow-to-Flutter migration
✅ Architecture setup: Clean Architecture, BLoC, Riverpod, MVVM
✅ Firebase integration (Auth, Firestore, Functions, Analytics, FCM)
✅ Payment integration: Stripe, RevenueCat, Apple Pay
✅ AI feature integration: chatbots, voice assistants, on-device ML
✅ Maps and location: Google Maps, geofencing, live tracking
✅ CI/CD setup: GitHub Actions, Codemagic, App Store + Play Store
✅ App performance audits, rewrites, and architecture migrations
✅ Post-launch support and long-term maintenance
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
TECH STACK
Cross-platform: Flutter (Dart), FlutterFlow
Architecture: Clean Architecture, BLoC, Riverpod, GetX, MVVM
AI and ML: OpenAI API, Gemini, Claude API, TensorFlow Lite, ML Kit
Backend and Cloud: Firebase, REST APIs, GraphQL, Supabase
Payments: Stripe, RevenueCat, Apple Pay
Maps: Google Maps, Geofencing
Storage: Hive, SharedPreferences, FlutterSecureStorage
DevOps: GitHub Actions, Codemagic, Fastlane, Git
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INDUSTRIES
✔ Fintech and payments (wallets, checkout, subscriptions)
✔ Health and fitness (HealthKit, Google Fit, real-time data)
✔ AI and productivity apps
✔ E-commerce and retail (catalogs, cart, order management)
✔ Social and media apps (feeds, real-time chat, content sharing)
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WHO THIS WORKS BEST FOR
· You're a founder building your first mobile product and need it shipped right the first time
· You have a Flutter app that's grown messy and needs a proper architecture rewrite
· You want AI features (chatbot, voice, recommendations) integrated into your existing app
· You built in FlutterFlow, hit its limits, and need someone to migrate to production Flutter
· You need full ownership, not just a developer waiting for tickets
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WHY CLIENTS CHOOSE ME
✔ Clean Architecture + BLoC by default, no messy code to inherit
✔ AI-ready, I build smart features not just screens
✔ FlutterFlow to Flutter migration when you've outgrown no-code
✔ Long-term reliability, most clients return for multiple projects
✔ Clear communication, fast responses, zero surprises
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If you want a developer who treats your product like it matters, not just a ticket to close, let's talk.
Click Hire or send me a message with what you're building.
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Flutter developer · FlutterFlow developer · FlutterFlow to Flutter migration · Flutter app development · Flutter iOS developer · Flutter Android developer · Flutter Firebase · Flutter BLoC · Flutter Riverpod · Flutter Clean Architecture · Flutter Dart developer · Flutter state management · AI mobile app developer · Flutter OpenAI · Flutter Stripe · Flutter RevenueCat · Flutter WebSocket · cross-platform mobile developer · MVP Flutter app · startup app developer · Flutter freelancer · hire Flutter developer · Flutter developer Upwork · FlutterFlow Firebase · FlutterFlow app development · no-code Flutter
Umar A.
has worked
.
Palestinian Territories
$20/hr
100%
Job Success
$200K+ earned
Available now
Start of list.
End of list.
# Flutter Developer | FlutterFlow | React Native | iOS & Android Apps
**$20.00/hr**
⭐⭐⭐⭐⭐ *"Mohammad did an excellent job with my mobile app project. I'm so happy with the outcome and I will be hiring him again! If you're looking for professionalism, expertise, and a great development experience, Mohammad is your guy!"*
Need a **Flutter or React Native developer** who can build, improve, or rescue your mobile app?
I help startups, businesses, and enterprise teams develop **high-quality cross-platform mobile applications** that are fast, scalable, secure, and built for long-term growth.
Whether you're launching an MVP, adding new features, fixing bugs, improving performance, or publishing to the App Store and Google Play, I can help you deliver a polished product.
### What I Can Help You With
✅ Flutter & FlutterFlow Development
✅ React Native Development
✅ iOS & Android Applications
✅ Firebase (Authentication, Firestore, Storage, Cloud Functions)
✅ REST APIs & Backend Integration
✅ Supabase Integration
✅ Payment Gateway Integration (Stripe, PayPal, In-App Purchases)
✅ Push Notifications (Firebase Cloud Messaging)
✅ Google Maps & Location Services
✅ AI Integration (OpenAI, Gemini, Claude APIs)
✅ App Performance Optimization
✅ Bug Fixing & Code Refactoring
✅ Clean Architecture (MVVM, BLoC, Riverpod, Provider)
✅ CI/CD & Automated Deployment
✅ App Store & Google Play Publishing
## Why Clients Work With Me
✔ Clean, scalable, and maintainable code
✔ Fast communication and regular progress updates
✔ Strong focus on performance, security, and user experience
✔ Reliable delivery and attention to detail
✔ Long-term support after project completion
## Experience
I've worked with startups, growing businesses, and established organizations across retail, wellness, healthcare, e-commerce, and on-demand services.
Some of the companies I've worked with include:
• OpenFair
• GGtude
• Mezaien Inc.
• Al Joharah
From MVPs to production applications used by thousands of users, I build mobile apps that are reliable, scalable, and ready for real-world use.
## Technologies
Flutter • FlutterFlow • React Native • Dart • JavaScript • TypeScript • Firebase • Supabase • REST APIs • GraphQL • Riverpod • BLoC • Provider • Clean Architecture • SQLite • Hive • CI/CD • Git • GitHub • GitLab • Google Maps • Stripe • PayPal • Push Notifications • App Store Connect • Google Play Console • Figma
### What Clients Say
⭐⭐⭐⭐⭐
*"Mohammad did an excellent job with my mobile app project. I'm so happy with the outcome and I will be hiring him again! If you're looking for professionalism, expertise, and a great development experience, Mohammad is your guy."*
If you're looking for a developer who writes clean code, communicates clearly, and delivers high-quality mobile apps on time, I'd be happy to discuss your project.
**Send me a message, and let's build something great together.**
Mohammed O.
has worked
.
Nepal
$8/hr
100%
Job Success
$1K+ earned
Start of list.
End of list.
I’m a Flutter developer with a strong backend foundation in a deep understanding of Linux environments and Docker. I specialize in building clean, high-performance applications with a focus on scalability, maintainability, and cross-platform efficiency.
📱 Flutter is my core frontend strength. I build elegant, responsive mobile applications using clean architecture patterns with Riverpod and BLoC, ensuring modular, testable, and future-ready codebases. I focus on delivering pixel-perfect UIs and seamless user experiences across platforms.
💻 On the backend, I confidently build robust APIs using nodejs and rust. I do not only develop scalable RESTful services but also create CLI tools to streamline workflows and solve real-world problems.
🐧 Linux is my daily driver (4+ years), and it shapes how I approach development, automation, and scripting. Combined with my experience in Docker, I ensure consistent environments and containerized deployments for both frontend and backend systems.
🛠️ Here’s what I bring to the table:
🌟 Flutter app development with clean architecture (Riverpod / BLoC)
⚙️ Backend development using node js and rust (REST APIs, CLI tools)
🔄 Full-stack integration of frontend and backend systems
🐳 Docker for containerization and environment parity
🐧 Strong command of Linux systems & shell scripting
🔌 RESTful API integration & effective state management
I’m looking for opportunities where I can contribute as both a Flutter expert and a backend developer, while helping build scalable, production-ready systems that deliver real impact.
Let’s build and scale something meaningful—together.
Manoj B.
has worked
.
$25/hr
100%
Job Success
$40K+ earned
Offers consultations
Start of list.
End of list.
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
.
Associated with
GemsEssence Infotech pvt ltd
$25/hr
100%
Job Success
Available now
Start of list.
End of list.
Passionate software engineer with experience developing cross-platform
applications using Flutter SDK.
Familiarity with :
Provider, Bloc, Riverpod state management
Firebase and it's services.
Google cloud functions using Nodejs & Golang
Google Pub/Sub topics
Payment gateway integration
Google Maps APIs
REST and GraphQl APIs integration
SQL/NoSQL DBs
Unit and Widget testing
CI/CD using github actions for iOS, Android and Web
App Deployment to Apple Appstore and Google Playstore
Fix Stores review issues with complete autonomy
Responsive/Adaptive design translation to code
MVVM and MVC Architectures
Git Version Control ~~ Github/Gitlab/AzureDevOps
Shihab K.
has worked
.