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$12/hr
100%
Job Success
$200K+ earned
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🏆Top Rated Plus Mobile App Expert🏆
I'm a full-stack mobile app developer with 5+ years of experience building high-performance, cross-platform and native mobile applications for iOS and Android. Whether you need a pixel-perfect Flutter app, a React Native solution, or a pure native Swift/Kotlin experience I deliver clean, scalable, production-ready code.
What I Build:
• AI-Powered Mobile Apps Chatbots, voice assistants, smart recommendation engines, on-device ML, real-time AI features using OpenAI, Claude, and Gemini APIs all running beautifully on mobile
• Cross-platform apps with Flutter (Dart) & React Native (JavaScript/TypeScript)
• AI Backend Integration -LLM pipelines, vector databases, embedding-based search, RAG architectures - wired seamlessly into your mobile frontend
• Native iOS apps with Swift, SwiftUI, UIKit, and Xcode
• Native Android apps with Kotlin, Jetpack Compose, and Android Studio
• REST API & GraphQL integration, Firebase, Supabase, AWS Amplify
• App Store & Google Play publishing, CI/CD with Fastlane, Bitrise, GitHub Actions
Core Skills & Technologies:
Flutter • Dart • React Native • Expo • Swift • SwiftUI • UIKit • Kotlin • Jetpack Compose • Android SDK • iOS SDK • Firebase • Firestore • Push Notifications (FCN/APNs) • Redux • MobX • Provider • Bloc • GetX • SQLite • Realm • Hive • REST APIs • GraphQL • WebSockets • In-App Purchases • Apple Pay • Google Pay • Stripe Integration • ARKit • CoreML • Google Maps SDK • App Store Optimization (ASO)
Industries Served:
FinTech | eCommerce | HealthTech | EdTech | Social Networking | On-Demand Delivery | Real Estate | SaaS
Why Clients Choose Me:
• Clean architecture (MVVM, Clean Architecture, BLoC pattern)
• 100% on-time delivery with clear communication
• Full ownership from wireframe to App Store/Play Store launch
• Bug-free, performance-optimized, and maintainable code
• Post-launch support and maintenance available
Whether you're a startup building your MVP or an enterprise scaling your mobile product, I'm here to turn your idea into a flawless app experience.
Let's build something great message me today!
Satinder Pal S.
has worked
.
Associated with
Geek Informatic & Technologies Private Limited
$2M+
earned
$27/hr
100%
Job Success
$90K+ earned
Available now
Offers consultations
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Product Delivery Expert | Mobile & Web Apps | Swift, Kotlin, Flutter, React Native, Python, Java, PHP
✈️ I help startups and businesses design, build, and launch AI-powered products fast
What I deliver:
- AI-powered mobile and web applications
- MVP development for startups
- End-to-end product delivery
- Native iOS apps: Swift, SwiftUI
- Native Android apps: Kotlin, Java
- Cross-platform apps: Flutter, React Native
- Backend systems and APIs: Python, PHP, Java
- SaaS platforms and automation tools
- UX/UI design, wireframes, product flows
- Legacy code improvement and app optimization
- App Store & Google Play deployment
- Post-launch support, scaling, and ASO consulting
Experience across:
AI products, SaaS, healthcare, logistics, marketplaces, geolocation apps, fintech, and on-demand platforms.
Key results:
🏆 200+ apps launched on App Store and Google Play
🏆 Michelin-awarded logistics mobile app
🏆 Improved user retention by 10% within 2 months
🏆 Delivered products for startups and SMBs across multiple industries
🏆 7+ years building and shipping digital products
How I work:
I focus on fast execution, clear communication, and business-oriented delivery. I can join at any stage of the project, whether you need product validation, MVP delivery, scaling, redesign, or technical leadership.
My process includes:
- Product discovery and planning
- Transparent project management with Jira
- UX/UI focused product design
- Scalable development architecture
- QA testing and deployment
- Long-term maintenance and growth support
About me:
I combine technical execution with product thinking. Beyond coding, I help clients make better product decisions, reduce delivery risks, and move from idea to launch efficiently
If you need a reliable AI product partner who can take ownership and deliver production-ready applications, let’s connect.
Keywords:
AI Development, AI Agents, AI Chatbots, Generative AI, AI SaaS, AI Automation, Mobile App Development, iOS Development, Android Development, Swift, SwiftUI, Kotlin, Flutter, React Native, Python, SaaS Development, MVP Development, UX/UI Design, Product Design, API Integration, Firebase, OpenAI API, ChatGPT Integration, Backend Development, Startup Apps, App Store Deployment, Google Play Publishing, Healthcare Apps, Logistics Apps, Fintech Apps, Marketplace Apps, Geolocation Services, Cross-Platform Apps, Product Management, Agile, Jira, ASO, Scalable Architecture
Georgiy P.
has worked
.
Associated with
mobileXapps MB
$80K+
earned
$39/hr
100%
Job Success
$900K+ earned
Available now
Offers consultations
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🌟8+ Years Experience | 50+ Projects | 20,000+ Hours | $900K+ Earned | Upwork Top Performer | Flutter Developer | Mobile App Developer
I’m a Flutter developer, mobile app developer, full stack developer, and web developer with 8+ years of experience building, fixing, and scaling mobile products for startups and growing companies. My work spans mobile app development, web development, and backend-connected product work, with a strong focus on clean architecture, smooth user experience, reliable delivery, and scalable app development.
I’ve worked across Flutter, Flutter Dart, Flutter Firebase, React, React Native, Xamarin developer projects, Xamarin Forms, Xamarin.Forms, .NET MAUI developer builds, Swift developer work, SwiftUI, iOS, Android, iOS developer tasks, iOS Swift, Android developer tasks, Android Kotlin, Kotlin, native app developer projects, AI app development, MVP development, API integration, and cross platform mobile app architecture. I also support teams that need a practical full stack developer who can connect mobile apps with APIs, dashboards, cloud services, and web systems without slowing the project down. That mix of mobile app development and web development lets me work across the full product, not just one part of it.
On Upwork, I’ve delivered 50+ projects, earned $800K+, and worked 20,000+ hours helping clients launch MVPs, modernize old apps, fix unstable codebases, and move products into production. That experience taught me how to balance speed with quality, especially when a project needs to ship quickly but still be stable enough for real users. It also taught me how to work with different teams, different product stages, and different technical constraints without losing momentum.
For new products, I help with MVP development from concept to launch. For existing products, I step in to improve architecture, refactor weak areas, and make the app easier to maintain and scale. If you’re building a cross platform mobile app, I can help choose the right direction between Flutter, React Native, .NET MAUI, Xamarin migration, or native app development depending on the product goals, timeline, and long-term plan. I focus on making those choices practical, not trendy, so the app can grow without becoming harder to manage.
I’m also a strong fit for AI app development projects where the product needs more than a basic interface. That might mean smart workflows, automated actions, backend logic, or API integration that connects the app to real business systems. In those projects, I pay close attention to stability, data flow, security, and the user experience, because a useful feature only matters if it works reliably in production.
💡 Areas I specialize in
- SaaS and startup MVP development - from idea to production-ready MVP.
- Cross platform mobile app architecture - Flutter, React Native, and .NET MAUI.
- App modernization and legacy migration - Xamarin to .NET MAUI, Flutter, or React Native.
- API integration and backend connectivity - for apps that need stable data flow and real-time features.
- AI app development and product automation - for teams that want smarter app experiences.
- Continuous delivery, refactoring, and codebase optimization - to keep existing products moving forward.
- Mobile app development for iOS and Android - with a focus on stability, performance, and usability.
- Full stack developer support - when mobile work needs web, API, or backend coordination.
- Native app developer support - when the project needs platform-specific quality and performance.
- React Native developer support - for teams already working in JavaScript-based mobile stacks.
- Swift developer and iOS developer support - for polished Apple ecosystem apps.
- Android developer support with Kotlin - for strong native Android performance.
- Flutter developer support - for fast cross platform mobile app delivery.
- Xamarin developer support - for legacy apps that need modernization or migration.
- .NET MAUI developer support - for teams moving toward a modern Microsoft stack.
- Cross platform mobile app delivery - when one codebase needs to support iOS and Android efficiently.
I’m a good fit when you need a mobile developer who can think beyond screens and help shape the full product. Whether the goal is a fresh MVP, a native app for iOS or native Android or a cross platform mobile app that can grow over time, I focus on code quality, maintainability, and practical results. I also make sure the work stays aligned with product goals, so the app is not just built well, but built in a way that supports growth and future updates.
🚀 If you need a Flutter developer, React Native developer, Xamarin developer, .NET MAUI developer, Swift developer, iOS developer, Android developer, Kotlin developer, mobile app developer, web developer, MVP development specialist, API integration expert, or full stack developer who can bring structure to a complex build and get it shipped, I’m ready to help.
Vitalii A.
has worked
.
Associated with
DevsX
$1M+
earned
United Arab Emirates
$25/hr
100%
Job Success
Available now
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Hi, I’m Jehanzeb!
I build cross-platform mobile applications and full-stack web systems with clean, highly predictable codebases. I work as an iOS app developer + Android app developer using one Flutter codebase for both platforms. I also specialize in designing scalable architectures that connect high-performance front ends with robust MERN stack backends and secure real-time admin dashboards.
WHAT I SPECIALIZE IN:
→ Flutter Mobile App Development
• Cross-platform iOS and Android applications
• Flutter & Firebase integration
• Clean Architecture and scalable project structures
• Real-time features and notifications
• API integrations
• Payment gateway integration
• App Store and Google Play deployment
• Performance optimization and bug fixing
→ MERN Stack Development
• React.js frontend applications
• Node.js and Express.js backend development
• MongoDB database design and optimization
• REST APIs and third-party integrations
• Authentication and authorization systems
• Admin dashboards and internal tools
• Real-time applications using WebSockets
• Scalable backend architecture
→ Full-Stack Product Development
• Minimum viable product development
• Marketplace applications
• CRM and ERP systems
• Saas based platforms
• Booking and scheduling platforms
WHO IS THIS FOR:
• Founders & Startups: Deploying stable, investor-ready MVPs, prototypes, and beta versions.
• SaaS Platform Owners: Expanding legacy monoliths into optimized, fast-loading infrastructures.
• Enterprise Teams: Businesses requiring secure system design that effortlessly supports 10,000+ active users.
What gets delivered:
• Flutter app synced perfectly with backend logic
• Admin dashboard giving real-time product control
• APIs that remain stable under scale and load
• Automated AI system replacing manual operations
• Full unit and integration testing on every build
If you're looking for a Flutter developer or MERN stack developer who can take ownership of both mobile and web development while maintaining high delivery standards, I'd be happy to discuss your project.
LIMITED PROJECT SLOTS AVAILABLE:
I take on a limited number of projects at a time. Book a consultation, and I'll personally review your setup and give you a practical roadmap.
Muhammad J.
has worked
.
Associated with
MindRex
$25/hr
100%
Job Success
$80K+ earned
Available now
Offers consultations
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𝗠𝗼𝗯𝗶𝗹𝗲 + 𝗠𝗩𝗣 + 𝗔𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻
I help startups and businesses build powerful mobile apps for iOS and Android with built-in AI capabilities using OpenAI, ChatGPT, and modern mobile technologies.
With 12+ years of experience and $80K+ earned on Upwork, I specialize in developing scalable MVPs, SaaS applications, and AI-powered mobile products that are fast, reliable, and ready for real users.
What I can help you with:
• Flutter apps (iOS & Android)
• Native iOS (Swift, SwiftUI) and Android (Kotlin)
• ChatGPT / OpenAI integration (chatbots, AI assistants, content generation)
• AI features: speech-to-text, text generation, image generation, automation workflows
• Firebase, REST APIs, payment integration, push notifications
• End-to-end MVP development (idea → launch → App Store)
Why clients work with me:
• Top Rated with 100% Job Success
• Strong communication and fast response
• Clean, scalable architecture
• Focus on business goals, not just code
• Long-term support and improvements
I’ve worked with startups, founders, and growing businesses to turn ideas into successful AI-powered mobile apps.
If you’re planning to build a mobile app with AI or add ChatGPT features to your existing product, feel free to message me, I’d be happy to discuss your project.
Let’s build something smart!
Raman (TOP RATED EXPERT)
Raman B.
has worked
.
Associated with
Seraphic Infosolutions Pvt. Ltd.
$100K+
earned
$50/hr
100%
Job Success
$600K+ earned
Available now
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👋 Hi there ! Looking for an elite Senior Android Developer to architect, secure, and scale powerful Android applications? With 20+ years in native Android development, I've worked across every major SDK, library, and device evolution - delivering fast, secure, and maintainable apps that perform under pressure.
I’ve developed and launched 100+ Android apps with over 20 million total downloads and an average Google Play rating of 4.8+. My work has helped reduce crash rates by 70%, shrink APK sizes by up to 60%, and increase app startup speed by 45%. From startups to Fortune 500s, I’ve led 12+ dev teams in delivering mission-critical, high-ROI apps for fintech, defense, media, and beyond.
🏆 Why Work With Me for Android Development?
✔️ 20+ years of deep Android expertise with Java, Kotlin, Jetpack, and NDK
✔️ Delivered 100+ apps to production — 20M+ installs, 4.8+ average rating
✔️ Reduced load times by 45% through advanced performance profiling
✔️ Security-hardened apps using R8, ProGuard, LLVM, NDK, and SELinux policies
✔️ Scaled enterprise-grade apps with 99.99% uptime and real-time data sync
✔️ Played key roles in HIPAA-, FIPS-, and PCI-DSS-compliant mobile solutions
🚀 Core Android Development Services:
📌 Native Android App Development
🔹 Expert in Kotlin, Java, Android SDK, Jetpack Compose, View System
🔹 Responsive UIs across all screen sizes using ConstraintLayout, MotionLayout, Compose
🔹 Modular architecture (MVVM, Clean Architecture, MVI, VIPER)
🔹 Advanced state handling with LiveData, Coroutines, Flow, RxJava
🔹 CameraX, MediaCodec, ExoPlayer for media-heavy apps
🔹 Full device compatibility from Android 5.0+ through latest Android 14
📌 Android Security & Low-Level Optimization
🔹 Obfuscation, code hardening, and NDK-level protection
🔹 Reverse engineering mitigation via Frida/Root detection
🔹 Low-level optimization with ARM NEON, RenderScript, JNI, and custom kernels
🔹 SELinux customization for hardened AOSP builds
🔹 Hardware integration with sensors, gyroscopes, accelerometers, and BLE
📌 Multimedia, Games & Streaming
🔹 Real-time video/audio with FFmpeg, OpenGL, Vulkan, MediaCodec
🔹 Game engines: Unity3D, LibGDX, custom OpenGL renderers
🔹 Augmented Reality with ARCore, face tracking, 3D overlays
🔹 Advanced drawing tools, canvas-based animation, real-time filters
📌 Backend Integration & Architecture
🔹 REST, GraphQL, gRPC, WebSockets, Firebase, and custom socket protocols
🔹 Secure data sync, push notifications (FCM), and analytics (Firebase, Amplitude)
🔹 CI/CD pipelines using Jenkins, Bitrise, GitHub Actions, and custom Gradle workflows
🔹 Offline sync and caching strategies for resilient performance
📌 Scalable Architecture & Cross-Platform
🔹 Kotlin Multiplatform, Clean Architecture, modularized multi-feature apps
🔹 Deep understanding of Android App Bundles, Play Feature Delivery, and Instant Apps
🔹 Flutter experience for select cross-platform needs (Dart/Flutter SDK)
📌 Database & Networking
🔹 SQLite, Room, Realm, SQLDelight, Firebase Realtime/Firestore
🔹 JSON parsing with Gson, Moshi, org.json
🔹 API integration using Retrofit, OkHttp, Apollo Client
🌟 Results-Driven Impact
✅ 70% reduction in crash rates using advanced testing and monitoring
✅ 45% increase in startup speed through bytecode and resource optimization
✅ 60% smaller APK sizes using modularization and build optimization
✅ 50% faster delivery cycles using custom CI/CD pipelines
✅ 40–65% increase in user retention through performance and UX refinement
✅ 99.99% stability in live apps with over 1M monthly active users
💡 Focused On What Matters Most:
✔️ Clean, scalable, testable code that teams can maintain and extend
✔️ Proactive debugging and crash prevention strategies
✔️ User-first experiences built for performance and engagement
✔️ Modern, maintainable app structure that grows with your business
✔️ Full lifecycle support-from idea to Play Store launch and beyond
🚀 Ready to Build a High-Performance Android App? Let’s talk!
Whether you're starting from scratch, rebuilding a legacy app, or scaling for millions-I'll help you build it right, fast, and with precision.
Sergey K.
has worked
.
Associated with
Ixobit Corporation (DBA Sibers)
$20M+
earned
$15/hr
100%
Job Success
Available now
Offers consultations
Start of list.
End of list.
It all started with a startup founder who had an amazing idea but no clue how to bring it to life. They needed more than just a developer; they needed a partner who understood business, user experience, and scalability. And that's when they Reach Me.
I started my journey developing iOS apps using Swift and SwiftUI, working on projects like 𝙅𝙞𝙤 𝙏𝙧𝙖𝙣𝙨𝙡𝙖𝙩𝙚, where I gained hands-on experience in building high-performance applications. As my expertise grew, I expanded into Android development with Java and Kotlin, mastering both platforms before diving into Flutter for cross-platform development.
Now, you know who I am and what I can do, but let me share some industries I’ve worked with so you can see if yours is one of them!
Industries I’ve Worked With:
✔ Fintech mobile app development
✔ Real Estate mobile app development
✔ Social Media mobile app development
✔ Beauty mobile app development
✔ Sports mobile app development
✔ Sustainable mobile app development
✔ Marketplace mobile app development
✔ Game Companion mobile app development
✔ Healthcare and wellness mobile app development
What I Do Best:
✅ iOS Development (Swift & SwiftUI) – Clean, efficient, and native iOS apps.
✅ Android Development (Java & Kotlin) – Smooth and optimized Android experiences.
✅ Flutter App Development – Scalable, cross-platform mobile apps.
✅ UI/UX Optimization – User-friendly designs that drive engagement.
✅ API Integration & Backend (Node.js) – Smooth and efficient app functionality.
✅ App Performance & Scalability – Optimize for speed and reliability.
✅ App Store & Play Store Submission – Hassle-free deployment and updates.
Over the years, I've had the privilege of working with global brands (𝙄𝙣𝙨𝙞𝙜𝙝𝙩 𝙏𝙞𝙢𝙚𝙧 ), startups, and individuals across 12+ countries, bringing their app ideas to life with precision and expertise.
With 120 million+ downloads and apps that users continue to keep on their phones, I know what it takes to deliver high-quality, user-friendly, and scalable apps that stand out in a crowded market.
I love what I do, and I bring that passion to every project. If you need a mobile app developer who cares about your success as much as you do, let’s chat.
👉 Book a consultation today, and let’s bring your app to life!
Nilesh K.
has worked
.
$30/hr
100%
Job Success
$100K+ earned
Available now
Offers consultations
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I offer a 𝗳𝗿𝗲𝗲 𝟯𝟬-𝗺𝗶𝗻𝘂𝘁𝗲 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 to discuss and refine your idea, recommend the right tech stack, and forecast any ongoing costs as your user base grows, so you avoid surprises and make informed decisions with clarity.
𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 𝐒𝐜𝐨𝐫𝐞 | 𝐄𝐱 𝐈𝐁𝐌 𝐂𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐧𝐭 | 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 | 𝟑,𝟎𝟎𝟎+ 𝐡𝐨𝐮𝐫𝐬 𝐝𝐞𝐥𝐢𝐯𝐞𝐫𝐞𝐝 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤 | 𝟏𝟎+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞
𝐎𝐮𝐫 𝐃𝐞𝐚𝐥 𝐘𝐨𝐮 𝐇𝐚𝐯𝐞 𝐚𝐧 𝐢𝐝𝐞𝐚? We’ll convert it into a scalable, beautifully designed app that delivers real-world impact and revenue growth.
𝗛𝗼𝘄 𝗬𝗼𝘂𝗿 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗠𝗼𝘃𝗲𝘀 𝗙𝗿𝗼𝗺 𝗜𝗱𝗲𝗮 𝘁𝗼 𝗟𝗶𝘃𝗲 𝗣𝗿𝗼𝗱𝘂𝗰𝘁:
Every project follows a clear, proven journey, divided into milestones:
UI/UX design → Front-end development → Backend development → Deployment → Post-launch maintenance (8 weeks FREE)
This ensures transparency, predictable delivery, and zero surprises.
Words from a recent client after working together (check more on my profile below):
𝐃𝐚𝐯𝐢𝐝 𝐄.
"Ashan is an amazing leader and app developer. He was my main point of contact for developing several projects. He has a very strong team that is able to understand requirements and consistently deliver on milestones. His team is able to help across the full product development process including wireframes, front end and back end development, and graphics design. "⭐⭐⭐⭐⭐
I've majored in software engineering, and I've used a myriad of technologies to help various businesses create mobile apps that have generated millions in revenue.
Over the past 10+ years, I have developed a wide range of iOS and Android mobile apps.
✅ Food delivery app
✅ Ride booking app (like Uber)
✅ Real estate listing app (Like Airbnb)
✅ Social media mobile app (like TikTok/Instagram)
✅ Startups/Investment management mobile app
✅ Wellness mobile app
✅ Fitness and Nutrition mobile app (like CalAI, MyFitnessPal)
✅ Sports mobile app
✅ E-commerce mobile app
✅ Language Learning Mobile App (Like Duolingo)
✅ Event management mobile app
✅ Grocery/Meal Planning mobile app
✅ Freelance mobile app
✅ Service Booking Mobile App (Home/HVAC)
✅ Inventory Management Mobile App
✅ Learning Management Mobile App
✅ Appointment Booking Mobile App (Salon/Doctor)
✅ Venue Booking Mobile App (Sports/Events)
✅ Task Management Mobile App (Project Management/To-Do)
✅ On-Demand Custom Mobile Apps
As your 𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗽𝗮𝗿𝘁𝗻𝗲𝗿, I go above and beyond to ensure your app’s success, from concept to launch.
What I Also Bring Beyond Development:
→ Technology & architecture consulting
→ Product roadmap & feature prioritization
→ Help you understand any possible ongoing costs with the project
→ Cost-effective tech stack selection with long-term cost planning
→ Scalability strategy as your user base grows
→ Technical support during investor or stakeholder discussions
𝗠𝗮𝗶𝗻𝘁𝗲𝗻𝗮𝗻𝗰𝗲 & 𝗟𝗼𝗻𝗴-𝗧𝗲𝗿𝗺 𝗦𝘂𝗽𝗽𝗼𝗿𝘁
I provide free post-delivery support for 8 weeks, followed by flexible maintenance plans based on your product needs, usage scale, and future roadmap, always discussed transparently.
If you’re looking for someone who understands your product, owns outcomes, communicates clearly, and thinks long-term, let’s connect and build something solid.
❗❗ Check out my portfolio! ❗❗
Highlighted Skills:
Full Stack Developer | Expert Full Stack Developer | Full Stack Mobile App Developer | Full Stack AI Developer | Expert Full Stack Mobile App Developer | Mobile Developer | iOS Developer | Android App Developer | Mobile App Development | Cross platform development | AI App Developer | AI App | Mobile Developer | App Developer | Mobile App Development Consultation | IT Consultation | App Developer | AI App Developer | iOS App Development | iOS App | Android App Development | Hybrid App development | Mobile App Development Consultation | Flutter | Firebase | Dart | Flutter Dart | Flutter Firebase | iOS Development | Android App Development | Smartphone | User Authentication | In App Purchases | API Integration
Ahsan W.
has worked
.
$18/hr
100%
Job Success
Available now
Offers consultations
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End of list.
Flutter & FlutterFlow mobile app developer with 10+ years of experience building iOS, Android, web, hybrid, no-code/low-code, and AI-powered apps. I help startups, agencies, and businesses turn Figma designs, MVP ideas, and complex workflows into production-ready products.
I specialize in Flutter app development, FlutterFlow app development, mobile app development, Firebase/Supabase backends, AI integrations, RAG-based assistants, Vector DB search, MCP-connected workflows, and scalable MVP-to-growth product development.
Selected by FlutterFlow as a FlutterFlow platform expert, I build fast without creating no-code debt. Whether you need a quick MVP, a custom Flutter mobile app, a FlutterFlow + Firebase product, an AI app, or a long-term mobile development partner, I can help you plan, build, launch, and scale.
What I can build for you:
✅ Flutter & FlutterFlow mobile apps
• iOS and Android apps
• Hybrid / cross-platform mobile apps
• Web apps and responsive FlutterFlow apps
• Figma / Sketch to FlutterFlow or Flutter
• Custom widgets, custom actions, APIs, animations, and advanced UI
• App Store and Google Play deployment
✅ MVP development for startups
• MVP planning and feature scoping
• Wireframe to launch-ready app
• Fast FlutterFlow MVP builds
• Firebase, Supabase, REST API, and admin dashboard setup
• Payment, maps, chat, notification, and social login integrations
• Clear migration path from FlutterFlow to Flutter when scale requires it
✅ AI app development & automation
• ChatGPT / OpenAI / Gemini integrations
• AI chatbots and in-app assistants
• RAG apps using documents, FAQs, databases, or internal knowledge
• Vector DB search and semantic search workflows
• MCP integrations for connected AI tools and workflows
• AI product search, product comparison, and recommendation systems
• Human-in-the-loop AI workflows for safer production use
✅ Backend, integrations & scaling
• Firebase Auth, Firestore, Cloud Functions, FCM, Crashlytics
• Supabase Auth, Postgres, Edge Functions, storage, and RLS
• REST APIs, third-party APIs, webhooks, and automation workflows
• Stripe, PayPal, subscriptions, in-app payments, and marketplace payments
• Google Maps, geolocation, chat, video, voice, and real-time features
• Bug fixing, performance optimization, refactoring, and feature scaling
Industries I work with:
Healthcare, fitness, eCommerce, food delivery, finance, fintech, travel, dating apps, social media apps, voice room apps, real estate, manufacturing, marketplaces, SaaS, AI assistants, internal business tools, booking apps, learning apps, and on-demand platforms.
Recent types of projects I can help with:
• Healthcare app with appointments, patient portals, reminders, and admin dashboards
• Fitness app with workout plans, subscriptions, progress tracking, and AI recommendations
• eCommerce app with product search, AI product comparison, payments, and order tracking
• Food delivery app with vendor panels, drivers, maps, and real-time notifications
• Fintech or finance app with secure user flows, dashboards, and API integrations
• Dating or social networking app with chat, matching, feeds, media, and moderation
• Real estate app with property listings, maps, filters, CRM workflows, and lead capture
• AI chatbot or RAG assistant connected to business documents, products, or support data
Why clients choose me:
⭐ Top Rated Plus
⭐ 100% Job Success Score
⭐ 4000+ billed hours
⭐ 40+ FlutterFlow apps shipped
⭐ 40+ Flutter apps shipped
⭐ 10+ years of mobile app development experience
⭐ Experience with startups, agencies, and enterprise clients
⭐ FlutterFlow expert community access
⭐ 1 month free post-launch bug-fix support on eligible projects
⭐ Long-term support available for optimization, scaling, and new features
Popular project options:
• FlutterFlow MVP Build — from $1500, delivered in 15 days depending on scope
• FlutterFlow + Firebase / Supabase Integration — from $1500, delivered in 15 days
• Flutter / FlutterFlow Bug Fix & Performance Boost — from $450
• AI App / Chatbot / RAG Integration — custom quote based on workflow and data sources
• App Store / Play Store Launch Support — custom quote based on app readiness
My working style:
I do not just “build screens.” I help you think through the product flow, backend structure, user experience, launch risks, and future scaling path. You get clean communication, realistic timelines, milestone-based delivery, and practical technical guidance before development starts.
If you are looking for a mobile app developer, Flutter developer, FlutterFlow developer, Flutter app developer, FlutterFlow app developer, hybrid app developer, or AI app developer who can move from MVP to production, send an invite with your idea, Figma file, feature list, or existing app link.
Let’s build a mobile app that is fast to launch, easy to use, and ready to scale.
Varun A.
has worked
.
Associated with
Virtuous Techlogic
United Arab Emirates
$35/hr
100%
Job Success
$100K+ earned
Available now
Offers consultations
Start of list.
End of list.
You have one shot to launch it right. Every week of delay, every half-built feature, every developer who ghosts after delivery costs you users, money, and momentum.
I make sure that does not happen
✅ 10+ years building production iOS and Android apps for fintech, crypto, AI, and Web3 companies
✅ Senior Flutter and React Native developer, cross-platform from architecture to App Store
✅ Top Rated on Upwork with $100K+ earned
✅ Real shipped products with active users on both stores right now
What I built:
✔ Mobile Apps: Flutter (Dart) and React Native (TypeScript) for iOS and Android. Startup MVPs, production rewrites, cross-platform apps, real-time systems, offline-first architecture, App Store and Play Store deployment. No supervision needed, no handholding, no gaps.
✔ Fintech and Crypto: non-custodial crypto wallets, Stripe payment integration, in-app purchases, KYC and KYT flows, trading platforms, multi-chain mobile wallets, fiat to crypto flows, banking app architecture.
✔ AI-Powered Mobile Apps: OpenAI API and Claude API integrations, LangChain workflows, RAG pipelines, AI chatbots, conversational interfaces, AI agents, on-device inference, LLM-driven automation built directly into mobile products.
✔ Blockchain and Web3: Ethereum, Solana, XRP Ledger, Bitcoin. Solidity and Rust smart contracts, DeFi protocols, NFT marketplaces, DAO governance, RWA tokenization, WalletConnect, MetaMask, multi-sig flows, dApp frontends.
✔ Backend and Infrastructure: Node.js, NestJS, REST APIs, GraphQL, WebSockets, Firebase, MongoDB, PostgreSQL, AWS, Docker, CI/CD pipelines. I own the backend, too, so you do not need a separate hire.
Most clients come to me because they need one developer who owns the entire product: mobile app, backend, integrations, blockchain layer, and deployment. No coordination overhead. No gaps between layers. One clear line of responsibility.
If you are building a fintech app, crypto wallet, AI-powered mobile product, or Web3 platform, send me your project details. I will respond with a clear technical plan and honest timeline within a few hours.
Keywords:
Flutter, React Native, iOS Development, Android Development, Mobile App Development, OpenAI API, LangChain, AI Chatbot Development, LLM Integration, Generative AI, Solidity Smart Contracts, Crypto Wallet Development, DeFi, NFT Development, Dart, TypeScript, Swift, Kotlin, Node.js, NestJS, Firebase, MongoDB, PostgreSQL, GraphQL, REST API, WebSockets, AWS, Docker, CI/CD, Stripe Integration, KYC, Payment Gateway, Ethereum, Solana, XRP Ledger, WalletConnect, MetaMask, RAG Pipeline, Claude API, AI Agent, Fintech App Development, Crypto Exchange, Trading Platform, MVP Development, Cross-Platform App Development
Syed Arslan A.
has worked
.