⚡ 𝐈 𝐛𝐮𝐢𝐥𝐝 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐫𝐞𝐚𝐝𝐲 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐬 — 𝐧𝐨𝐭 𝐣𝐮𝐬𝐭 𝐩𝐫𝐨𝐭𝐨𝐭𝐲𝐩𝐞𝐬.
If you're looking for a Flutter developer who can turn your idea into a scalable, high-performance app, you're in the right place.
💡 Before you invest anything, I can create a basic app flow + the first screens in Figma, so you clearly see how your app will work.
𝐑𝐞𝐬𝐮𝐥𝐭𝐬 & 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞
✅ 45+ apps published on App Store & Google Play
✅ $70K+ earned
✅ 700+ hours worked
✅ 100% client satisfaction
𝐖𝐡𝐚𝐭 𝐈 𝐝𝐞𝐥𝐢𝐯𝐞𝐫
• Complete mobile apps (Android & iOS)
• Clean, scalable, and maintainable code
• High-performance Flutter applications
• API integrations (REST, Firebase, etc.)
• App Store & Google Play publishing support
𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤
✔ Flutter (main)
✔ Kotlin & Swift
✔ Firebase, Node.js, Python
✔ REST APIs & integrations
✔ State management: BLoC, Riverpod, Provider, GetX
𝐅𝐨𝐜𝐮𝐬
I work mainly with:
• Startups launching MVPs
• Businesses scaling existing apps
• Clients who need reliable, long-term solutions
𝐖𝐡𝐲 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 𝐦𝐞
• Clear and fast communication
• Clean architecture & organized code
• Apps built to scale (not break later)
• Real commitment to your project
𝐍𝐞𝐱𝐭 𝐒𝐭𝐞𝐩
Have an idea? Let’s turn it into a real product.
Click “Invite to Job” and let’s talk 🚀
🔍 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀:
✔ Mobile App Development
✔ Flutter App Development
✔ Flutter Developer
✔ App Creation
✔ Mobile App Building
✔ Cross-Platform Development
✔ Hybrid Development
✔ App Design & Development
✔ Android Development
✔ iOS Development
✔ Real Estate Apps
✔ Food Delivery Apps
✔ Dating App Developer
✔ Grocery Apps
✔ Mobile App Design
Flutter
Dart
Firebase
REST API
Google Maps API
Payment Gateway Integration
Push Notifications
Game UI/UX Design
Clean Architecture
Paulo Jeferson D.
Rio de Janeiro, Brazil
$15/hr
5.0
5 jobs
⚠️ 𝗪𝗼𝘂𝗹𝗱 𝘆𝗼𝘂 𝗹𝗶𝗸𝗲 𝘁𝗼 𝘀𝗲𝗲 𝘆𝗼𝘂𝗿 𝗮𝗽𝗽 𝗲𝘃𝗲𝗻 𝗯𝗲𝗳𝗼𝗿𝗲 𝗶𝗻𝘃𝗲𝘀𝘁𝗶𝗻𝗴 𝗮 𝘀𝗶𝗻𝗴𝗹𝗲 𝗰𝗲𝗻𝘁? ⚠️
Before you accept or pay anything, I can prepare a simple flowchart of your App + the design of the first 4 screens in Figma.
This way, you can review my work and have a clear vision of how your app can come to life even before hiring me.
🏆 𝗔𝗰𝗵𝗶𝗲𝘃𝗲𝗺𝗲𝗻𝘁𝘀:
✅ Over 7 years of experience in mobile app development
✅ 50+ published apps (App Store & Play Store)
✅ 100% project success rate (client satisfaction index)
✅ 700+ hours worked & over $70K earned
I am a senior mobile app developer with more than 7 years of experience building cross-platform apps with Flutter. Whether it’s a business app, e-commerce, e-learning, booking system, delivery app, or marketplace, I have delivered clean, scalable, and fully functional applications for startups and companies worldwide.
I specialize in building high-quality, high-performance mobile apps using Flutter, Kotlin, and Swift. With a solid foundation in clean architecture and deep expertise in state management solutions (BLoC, Riverpod, Provider, GetX), I deliver applications that are not only visually appealing but also robust, scalable, and easy to maintain.
🔹 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸:
✔ Frontend / Mobile: Flutter, Kotlin & Swift (Android & iOS)
✔ Backend: Node.js, Python, Firebase
✔ UI/UX: Figma, Adobe XD, Sketch
✔ Databases: SQLite, MySQL, PostgreSQL, Firebase
✔ AI & Automation: OpenAI, ChatGPT integrations, marketing automation
🌐 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲:
◉ Delivery Apps (food, grocery, restaurants)
◉ Transportation & Mobility Apps (taxi, logistics, tracking)
◉ On-Demand Service Apps (beauty, maintenance, technicians)
◉ Health & Fitness Apps
◉ Social, Dating & Messaging Apps
◉ Real Estate & Business Apps
◉ Booking & Event Apps
🔹 𝗦𝗸𝗶𝗹𝗹𝘀 & 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲:
✅ Social Integration (Google, Facebook, Apple, Instagram, YouTube)
✅ Payment Integration (Stripe, PayPal, Google Pay, Apple Pay, Razorpay)
✅ Subscriptions & In-App Purchases (including RevenueCat)
✅ Real-time Chat, Audio/Video Calls & Live Streaming
✅ Location & Tracking (Google Maps, Places API, real-time GPS)
✅ Security & Authentication (2FA, Firebase, Twilio, Mailgun)
✅ QR Code & Barcode Generation
🎁 𝗪𝗵𝗮𝘁 𝗬𝗼𝘂 𝗚𝗲𝘁 𝗪𝗼𝗿𝗸𝗶𝗻𝗴 𝗪𝗶𝘁𝗵 𝗠𝗲:
1 month of free maintenance after app launch
Lifetime technical support for questions & exclusive app follow-up (optional)
Intellectual property rights from day one
Full deployment on App Store & Google Play
Apps developed strictly following Apple & Google guidelines
💬 𝗡𝗲𝘅𝘁 𝗦𝘁𝗲𝗽𝘀
If you have an idea and want to turn it into a professional, robust, and scalable app, I’d be glad to help.
Click “Invite to Job” and let’s discuss your project.
Sincerely,
Paulo Jeferson
🔹 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀:
✔ Mobile App Development
✔ Flutter App Development
✔ Flutter Developer
✔ App Creation
✔ Mobile App Building
✔ Cross-Platform Development
✔ Hybrid Development
✔ App Design & Development
✔ Android Development
✔ iOS Development
✔ Real Estate Apps
✔ Food Delivery Apps
✔ Dating App Developer
✔ Grocery Apps
✔ Mobile App Design
Flutter
Dart
Firebase
Kotlin
Swift
JavaScript
Python
UX & UI
Google Cloud Platform
Google APIs
In-App Purchases
In-App Subscription
Google Maps API
Figma
Adobe Photoshop
Leone C.
Rio de Janeiro, Brazil
$25/hr
5.0
1 jobs
I build production-minded automation, mobile apps, APIs, and AI-assisted workflows that need to work reliably outside a demo.
My strongest fit is where mobile, Python automation, data capture, and integrations meet:
- Python automation: Playwright/Selenium workflows, API integrations, Google Sheets/Excel outputs, scheduled pipelines, data normalization, retries, logging, and handoff documentation.
- Mobile/Flutter: 7+ years in mobile, including Flutter/Dart, Android/Kotlin, iOS/Swift, Firebase, offline-first data, API integrations, dynamic forms, image/document capture, push notifications, and release/debug workflows.
- AI agents and LLM tooling: practical experience with local automation, agent-style workflows, MCP-style tool integration, structured actions, human approval loops, and debugging tool-calling behavior.
- Backend/API work: Django, Google Cloud Functions, REST/GraphQL integrations, Docker environments, BFF patterns, caching, and production troubleshooting.
Relevant examples:
- Built Python Google Cloud Functions for support/newsletter workflows and Facebook API data caching for a Flutter/Kotlin app.
- Built a Django/React allocation system using OR-Tools and automated Google Sheets workflows.
- Modernized Flutter apps with dynamic forms, validation, image upload, API compatibility updates, Firebase, and BLoC.
- Delivered offline-first Android/Flutter field apps with maps, local databases, sync, scanners, camera/device integrations, and production stability work.
- Debugged and improved mobile performance, including large map rendering and app loading/stability issues.
I work best on small, urgent, concrete problems: a scraper that must produce clean Excel output, a Flutter/API bug that blocks users, an automation that needs retries/logs, or an agent/local-LLM workflow that is stuck in a loop. I will tell you where the risk is, keep the scope clear, and leave code/documentation that someone else can maintain.
Flutter
Dart
Firebase
iOS
Android
AI Agent Development
API Integration
Web Scraping
Automation
Selenium
Django
Google Cloud Platform
RESTful API
GraphQL
FastAPI
Artificial Intelligence
Machine Learning
Python
Kotlin
Java
Lucas B.
Londrina, Brazil
$35/hr
5.0
73 jobs
I’m a full-stack developer with 4+ years of experience building responsive websites, web applications, mobile apps, and backend systems.
My strongest expertise is in Frontend Development, working with React.js, Next.js, TypeScript, Tailwind CSS, UI/UX implementation, animations, and API integrations. I also build cross-platform mobile apps with Flutter and backend systems using Node.js and NestJS.
I can help you with:
React.js and Next.js web applications
Responsive landing pages and websites
Dashboards and SaaS platforms
Figma-to-code implementation
Flutter mobile apps for iOS and Android
Firebase and Supabase integrations
Node.js/NestJS REST APIs
Authentication systems
Database integration
Clean, reusable, and scalable code
I focus on building products that are not only functional, but also polished, fast, responsive, and easy to maintain. I care about good communication, meeting deadlines, and understanding your business needs before writing code.
Whether you need a complete application, a frontend specialist, a Flutter developer, or backend support with Node.js/NestJS, I can help bring your idea to life with quality and attention to detail.
SCSS
Responsive Design
JavaScript
CSS
Figma
Front-End Development
React
API Integration
Tailwind CSS
Next.js
TypeScript
SEO Performance
Tailwind UI
Redux
Algorithms
PSD to HTML
Andre H.
Goiania, Brazil
$100/hr
5.0
40 jobs
With a passion for building intelligent, beautiful apps with custom UIs, I use Flutter to help companies bring their next big product to life on any screen.
My areas of expertise include:
- Flutter specialist
- Firebase specialist
- Unit and widget testing
- Customized chat apps with your personal AI Agent
- App Monetization
- Custom widgets and complex animations
- MySQL / SQLite
- MobX / Riverpod / BLOC state management
- Git
- Google, Facebook, Email, GitHub, Phone, and Apple authentications
- Crashlytics, Google Analytics, AdMob, Push notifications
- Lovable, Figma, Sketch, Adobe XD resource extraction
Welcome! Let's have a chat :)
Flutter
Smartphone
Dart
Firebase
Mobile App Development
Hybrid App Development
Kotlin
iOS
Android
GitHub
Test-Driven Development
Mobx
JetBrains IntelliJ IDEA
UI Animation
Node.js
GraphQL
Payment Functionality
Map Integration
Chat & Messaging Software
API Integration
Stoberton F.
Sao Paulo, Brazil
$30/hr
5.0
2 jobs
Hello!
I am a Software Developer with solid experience in mobile and backend development, focused on building scalable, high-performance, and maintainable applications.
My background includes developing cross-platform mobile solutions using Flutter (Dart), Xamarin, and .NET MAUI, as well as backend systems and REST APIs using C#/.NET. I have worked on projects involving real-time communication, external integrations, business-critical workflows, and data-driven applications across multiple industries.
Key areas of expertise include:
• Flutter and Dart development
• Android mobile applications
• REST APIs and backend services with C#/.NET
• WebSockets and real-time data communication
• Local database management and offline-first solutions
• API integrations and data synchronization
• Software architecture, Clean Architecture, and SOLID principles
• System maintenance, refactoring, and performance optimization
Throughout my career, I have collaborated with product managers, designers, and stakeholders to transform business requirements into reliable software solutions. I am comfortable working with complex business rules, integrating external services, and delivering features that balance technical quality with user
Flutter
Dart
Firebase
jQuery
Bootstrap
HTML5
SQL
JavaScript
PHP
MySQL
C#
Visual Basic
FlutterFlow
Java
Kendo UI
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