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Google-certified Android Developer Expert building production-grade apps for fintech and banking. 5+ years, zero critical post-launch failures. Clean Architecture, real transactions, real users. I've shipped Android apps that handle real-world pressure, not just demos: 1. Led full-stack Android development for fintech apps processing live transactions with high-security requirements 2.Built consumer lifestyle apps with sustained daily active users and strong retention rates 3.Delivered across the full Android stack: from architecture decisions to Play Store deployment I architect before I code. Every project starts with a clear structure, MVVM or Clean Architecture so future features are fast to add and cheap to change. Clients get readable, tested, documented code that their next developer won't curse at. Core stack: Kotlin, Jetpack Compose, MVVM, Clean Architecture, Coroutines, Retrofit, Room, Hilt/Dagger, Firebase, RESTful APIs, Google Play deployment. Domains: fintech, banking, lifestyle apps. If you're building an Android app that needs to hold up under real usage, not just pass a demo, send me a message. I typically respond within 12 hours.

⭐⭐⭐⭐⭐ Top Rated Plus on Upwork 50,000+ USERS ACROSS APPS BUILT | CLIENT PRODUCTS RAISED $200K+ & GENERATED MRR (Only 2 client slots left for Q4 2026) Struggling to turn your app idea, Figma design, or MVP into a production-ready product that can actually scale? I’m a Flutter & FlutterFlow Expert who helps startups and businesses build, launch, and scale mobile and web applications, from early MVPs to real products used by tens of thousands of users. 💎 FlutterFlow Expert Recognised by FlutterFlow 🎊 Upwork Top 1% of Flutter and FlutterFlow Developer Hi! I’m Aksa. I specialize in Flutter, FlutterFlow, Firebase, Supabase, APIs, AI integrations, payments, authentication, and custom backend development. Apps I’ve worked on have reached 50,000+ users, helped clients raise $200K+ in funding, and supported products generating recurring revenue. Anyone can build screens in FlutterFlow. What I bring is the engineering behind the product: scalable architecture, custom functionality, reliable integrations, performance optimization, and a clear path from idea → development → App Store & Google Play launch. Whether you need to launch an MVP, improve an existing FlutterFlow app, or build a complete Flutter product from scratch, I focus on creating software that is polished, maintainable, and ready for real users and real business growth. 🏆 MVP Success Real outcomes from products I’ve helped ship: ✔ FlutterFlow MVP that secured $160K seed funding ✔ FlutterFlow + Flutter app with 10,000+ active users 💡 Flutter Development Expertise ✔ End-to-end Flutter Development for scalable products ✔ Building modern mobile apps in Flutter with clean architecture ✔ Strong experience as a Flutter App Developer and Flutter Developer ✔ Advanced Firebase Flutter integration (Auth, Firestore, FCM, Crashlytics) ✔ Experience as a FlutterFlow Developer for rapid MVP delivery ✔ State management: BLoC, Provider, Riverpod ✔ API integration and backend connectivity I focus on delivering mobile apps in Flutter that are stable, maintainable, and optimized for growth. 🔧 Flutter App Development & Enhancement As a Flutter Developer, I don’t just build apps — I also specialize in: ✔ Enhancement of Flutter app performance and architecture ✔ Refactoring and scaling existing Flutter apps ✔ Fixing issues and improving stability in Flutter Development projects ✔ Adding new features and integrations to existing mobile apps in Flutter Whether you need a new Flutter App Developer or support with enhancement of Flutter app, I can help. ⚙️ Full Stack Flutter Development As a Full Stack Developer Flutter, I provide: ✔ Backend integration (Node.js, Firebase, APIs) ✔ Scalable Firebase Flutter solutions ✔ Real-time features and cloud integrations ✔ Payments, notifications, and analytics My experience in Full Stack Flutter Development ensures your mobile app in Flutter is fully functional and production-ready. 🔥 Why Work With Me ✔ 5+ years as a Mobile App Developer & Flutter Developer ✔ Strong expertise in Flutter Development and mobile apps in Flutter ✔ Deep experience with Firebase Flutter and backend systems ✔ Proven track record as a Flutter App Developer ✔ Experience as a FlutterFlow Developer for fast delivery ✔ Focus on enhancement of Flutter app performance and scalability 📩 Let’s Build Your Flutter App let’s connect and discuss your project 🚀 ----- 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, Ride Booking App, 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, FlutterFlow Certified, Expert, Top recommended.

Thanks for visiting my profile. I'm a Full Stack & Mobile Developer with experience building AI-powered applications, web platforms, and mobile apps for businesses, startups, and individual clients. I specialize in creating scalable, user-friendly solutions using modern technologies across mobile, web, backend, and AI integrations. What I can help you with: • Native Android Development (Kotlin, MVVM, Clean Architecture, Dagger Hilt) • Cross-platform Development (Flutter, React Native) • Web Applications (React, TypeScript, Supabase, Netlify) • AI Chatbots & AI Integrations (OpenAI, Claude, OpenRouter) • REST API Integration & Backend Development • Firebase (Authentication, Firestore, Cloud Messaging) • Maps, Camera, QR Code, Payment & Third-Party Integrations • Manual Testing & Quality Assurance • Landing Pages and Business Websites Why clients work with me: • Clean, maintainable, and scalable code • Strong problem-solving and debugging skills • Fast communication and reliable delivery • Experience working with international clients • Ability to work across mobile, web, backend, and AI technologies • Focus on performance, usability, and long-term maintainability Recent Projects: • Built GenMeta, a full-stack SaaS platform using React, TypeScript, Supabase, and Netlify • Delivered AI-powered booking assistant demo with chatbot integration and booking workflow simulation • Developed and maintained React Native applications for international clients • Built Android applications using Kotlin and modern Android architecture • Performed manual testing and quality assurance for Android applications I've been actively developing software since 2017 and continuously expand my skills to stay current with modern technologies and AI-powered solutions. If you're looking for a developer who communicates clearly, learns quickly, and focuses on delivering practical results, I'd be happy to discuss your project. Let's build something great together.

🚀 Ready to turn your mobile app ideas into reality? Or perhaps you need a powerful solution to tackle a business challenge with a custom mobile app? Let’s make it happen together! 💡 👋🏼😁 Let’s Get Acquainted: Hi, I'm Rafi, a dedicated Mobile App Developer with over 3 years of experience in crafting robust, user-friendly applications using Flutter and Kotlin. I specialize in creating clean, maintainable, and scalable apps with beautiful UIs that perfectly align with the unique needs of my clients. 🫡🌟 Why Choose Me? What You Will Get? ✅ Cutting-edge development aligned with industry standards ✅ End-to-end app design, from initial sketches to full prototypes ✅ Affordable rates paired with outstanding value ✅ Ongoing maintenance, including updates, bug fixes, and user experience enhancements ✅ Transparent and open communication every step of the way ✅ Strategic guidance to refine and elevate your product vision 🧑🏼‍💻📱 Technical Proficiency: ✅ Programming Language & Framework: Dart, Flutter, Kotlin, Android Native ✅ State Management: GetX, Provider, BLoC ✅ Database Management: Firebase, Supabase, SQL (MySQL, PosgreSQL, Sqflite) ✅ API Integration: RESTful, Google Authentication, Unity Game Engine, GenAI (Gemini & ChatGPT) ✅ Project Management Tool: Jira, Trello, Notion ✅ Version Control System: GitHub 🧑🏼‍💻📱 Industrial Proficiency: ✅ Education (Learning Platform) ✅ Automotive (Vehicle Condition Monitoring) ✅ Sport (IoT-Powered Workout Counter) ✅ Human-Resource (Attendance and Employee Performance Monitoring) ✅ E-Commerce (E-Commerce Platform for Tailor) 🔑🔍Keywords: Flutter, Flutter App Development, Android, Android App Development, Mobile App Development, Mobile App, Dart, Kotlin, Firebase, Supabase, REST API, RESTful API, Provider, GetX, BLoC, User Interface Design, User Experience Design, UI/UX Design, UI Slicing, Agile, State Management, Git, GitHub, Jira, Trello, JSON, SQL, NoSQL, MySQL, PostgreSQL, Sqflite, Cloud Firestore, Firebase Authentication, Google Maps API, Push Notifications, MVVM, API Integration, Continuous Integration, Version Control, Debugging, Problem-Solving, Material Design, Responsive Design.

What I Offer - Custom Mobile App Development for Android (Kotlin/Java), Flutter, and iOS (SwiftUI) - Clean Architecture & Scalable Codebases using MVVM, MVI, MVP, or Clean Architecture - Smooth API Integration with Retrofit, OkHttp, Ktor, and Firebase - Modern UI/UX Implementation using Jetpack Compose or traditional XML, based on designs from Figma or Sketch - App Optimization for performance, battery usage, and responsiveness - Agile Collaboration using tools like GitHub, Jira, ClickUp, Trello, and Slack Why Choose Me? - Proven Experience: 8+ years in Android native dev, including Kotlin, and Flutter for cross-platform. - Problem Solver: I don’t just write code — I solve problems and think about your product holistically. - On-Time & Within Budget: I respect deadlines and deliver quality without surprises. - Strong Communicator: Transparent, proactive, and always keeping you in the loop. - Client Satisfaction: Committed to long-term success and happy to support your app post-launch. Let’s Build Something Awesome Got an idea? Need help improving your existing app? Let’s collaborate and bring your mobile product to life. Click the “Invite” button or send me a message — I’m ready to get started!

Top Rated Android engineer, 100% Job Success, 13 five-star contracts — most of them repeat clients who came back for the next feature. I build and rescue Android apps for startups and fintech companies, and I ship fast without leaving you a codebase you'll regret. My day job is fintech: Android Engineer at a licensed securities brokerage, and before that Bank Mandiri (Indonesia's largest bank) and Stockbit (one of Indonesia's biggest retail investing apps). I'm used to code that handles real money, real-time market data, and compliance review. On Upwork I bring that same standard to smaller teams. WHAT I DO FOR CLIENTS ▸ Build your Android MVP from Figma to Play Store — Kotlin, Jetpack Compose, Clean Architecture/MVVM, Firebase, REST. Recent: a full status-saver app built and launched in under 4 weeks; an accessibility-first calling app MVP in 5 days. ▸ Rescue and modernize existing apps — take over a messy or abandoned codebase, fix crashes, update target SDK / Play policy compliance, migrate Java → Kotlin and XML → Compose incrementally, clean up Gradle. Track record: cut a critical-bug backlog 40% on a legacy Java insurance app and extended its product life. ▸ Add the feature that unlocks revenue — Google Play Billing & RevenueCat subscriptions, AdMob, push notifications (FCM), Google Maps/location, in-app rating, WebSocket real-time data, payment SDKs. I've shipped my own subscription app on Google Play, so I know the store-review side too. ▸ Fintech & payments — trading/transaction flows, deposit/withdrawal UX, e-statements, secure auth, WebSocket + Protobuf real-time feeds (I led the first implementation at Stockbit), banking "smart branch" features, POS and payment-SDK integration on EDC devices (GoPay, chip-based). ▸ Flutter when it's the right call — BLoC, Dio, modular architecture; I revamped a legacy Java insurance CRM app into Flutter. HOW I WORK • Async-first and proactive: you get a short written update at every milestone, not silence until the deadline. • I use AI-assisted tooling in a disciplined way (I write about this on Stackademic / CodeToDeploy) — which is why I can turn a 2-day feature around in hours without sacrificing code review or tests. • I treat your codebase like my own: readable Kotlin, unit tests where they matter, no "it works on my machine". • Timezone: Jakarta (UTC+7). Comfortable overlapping with EU mornings and US evenings. WHAT CLIENTS SAY "One of the most skilled people I've worked with… executes very fast, with deep understanding and great attention to detail." "Smart, reliable, fast, and very detail oriented." "A great listener, and very solution-oriented. He works quickly and handles problems in an efficient and professional way." CREDENTIALS Google Associate Android Developer (certified) · 7+ years production Android · Author on Stackademic & CodeToDeploy (Compose, Paging 3, offline-first, FCM testing, Gradle convention plugins, AI-assisted dev) · Community speaker on AI-assisted Android workflows · Creator of palugada-cli (open-source dev tooling) NOT A FIT IF you want the cheapest bid or an iOS-only build. A GOOD FIT IF you want an engineer who has shipped in a regulated environment and will tell you honestly what's worth building. Send me your Figma, your repo, or a two-line idea — I'll come back with a practical plan and a fixed quote within 24 hours.