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Senior Mobile App Developer and FlutterFlow App Developer with 5+ years of experience. 💎 FlutterFlow Expert Recognised by 𝗙𝗹𝘂𝘁𝘁𝗲𝗿𝗙𝗹𝗼𝘄 🤝 Certified FlutterFlow Developer & Flutter Developer 🎊 Upwork Top 1% of 𝗙𝗹𝘂𝘁𝘁𝗲𝗿 & 𝗙𝗹𝘂𝘁𝘁𝗲𝗿𝗙𝗹𝗼𝘄 Developer As a Flutter Developer, I specialize in Flutter Development, helping startups and businesses create and scale mobile apps in Flutter, from MVPs to complex production systems. I also work as a Full Stack Developer Flutter, handling both frontend and backend integration for complete solutions. 🏆 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.

I am a software engineer with more than 5 years of experience, specializing in Backend Development. So far, I have worked for three large technology companies: Tokopedia - GoTo Group (an e-commerce company), Mekari (a Software-as-a-Service company) and Alchemy Telco Solutions Ltd (a circular tech company). I was involved in building, maintaining, and scaling the server-side Backend services and applications for various purposes and needs. I have built and maintained several proprietary Backend systems for the following: - Purchasing travel tickets (flight, hotel, and train) - Purchasing and selling wholesale and digital products - Managing custom deployment for all containerized services and/or applications - Managing services and/or applications catalog metadata - Printing services

Most backend engineers can write code. Fewer can architect a system that holds up at scale, survives a traffic spike, and stays observable when something breaks at 2am. That's the gap I fill. I'm a Top Rated Plus engineer on Upwork with a 100% Job Success Score across 34 contracts and 4,600+ hours — working with clients from startups to enterprises across ticketing, marketplace, gaming, and HR domains since 2011. What I actually do: I design and build production-grade backend systems in Go — from the API layer down to the infrastructure. That means event-driven microservices with Kafka or RabbitMQ, containerized deployments on Kubernetes, full CI/CD pipelines, and cloud infrastructure on AWS, GCP, DigitalOcean, or Alibaba Cloud. I don't hand you a working local demo and disappear — I deliver something that runs reliably in production, with proper observability, testing at every layer, and documentation your team can maintain. Specifically, I can help you if: — Your monolith is becoming a bottleneck and you need to decompose it into services that scale independently — You're building a new product and need a senior engineer who can own the backend architecture from day one — Your Kubernetes setup is held together with hope and tribal knowledge, and you need someone to make it solid — You need CICD that actually works — automated testing, container builds, and deployments to staging and production without manual steps Tech I work with daily: Go · PostgreSQL · Redis · Kafka · RabbitMQ · Elasticsearch · Docker · Kubernetes · Helm · Terraform · AWS · GitHub Actions · GitLab CI · gRPC · REST How I work: I ask the right questions before writing the first line of code. I communicate in plain language, not jargon. I've worked in agile teams, solo, and everything in between — I adapt to your workflow, not the other way around. And I treat your codebase like I'll be the one maintaining it, because sometimes I am. If you need a senior engineer who thinks in systems, communicates clearly, and delivers work you won't have to redo — let's talk.

Need to launch mobile apps on iOS and Android fast without paying for two dev teams? Need to build scalable backend system? Services I provide: - Mobile App Development - Android App Development - Back-end, API, Database Development - Building E-commerce Platform - Web Scraping - App Testing - App Maintaining & Bug Fixing Why work with me: - I have 5+ years in Software Development, specialize in Mobile and Back-end. - Experienced working on multiple unicorn startups in Indonesia. - Prioritize performance, scalability, and clean architecture. - Free consultation Let's discuss more!

Hi, I’m Rifky — a backend and business-oriented software developer with experience building REST APIs, internal business applications, BI dashboards, workflow systems, and WordPress/Laravel-based solutions. I help clients turn unclear business requirements into practical, working systems. My core strengths include: • Backend API development • Business application development • BI dashboards and reporting logic • Workflow and internal tool development • Database design and data flow validation • WordPress customization and bug fixing • QA validation, debugging, and production support In my professional work, I have handled projects involving API design, SQL/database handling, dashboard validation, business logic analysis, deployment, and release readiness. I’m comfortable working with existing systems, understanding how the business process works, then improving or building the right technical solution. I’m not tied to one specific framework. I focus on understanding the problem first, then choosing the most practical tool for the job. Frequently used tools and technologies: JavaScript, TypeScript, PHP, Python, Node.js, Express.js, Laravel/Lumen, Vue, React, SQL Server, PostgreSQL, MySQL, Git, Postman, IIS, Board, and MotionBoard. I’m also expanding into AI-powered applications and Data Science, especially chatbot APIs, automation workflows, and data-driven systems. If you need a developer who can understand your business flow, build reliable backend systems, validate logic, and support your application properly, I’d be happy to help.

Hi, my name is Febrianto Arif, I am a Full stack Mobile & Web Developer, Senior React Native & Yii Developer. This is my current achievement : ✅ Upwork Top Rated Plus Developer (June 2022) ✅ Full Stack Web(SaaS/B2B/B2C/PWA/Ecommerce) Developer ✅ Familiar with AI Agent & OpenClaw(ClawBot) ✅ Full Stack Mobile Developer ✅ 20+ Products Created using React Native ✅ 6+ years of experience with React Native (Redux, React Navigation, GraphQL, Axios) ✅ 4+ years of experience with Yii-Framework v1 and 6+ years of experience with Yii-Framework v2. ✅ Familiar with Github & Gitlab ✅ Familiar with CI/CD platform like CodeMagic, Bitrise, Gitlab, CircleCI, and Netlify ✅ Love to write clean code This is my skill stacks : 💻 Javascript (ES6) 💻 Typescript 💻 ReactJS & NextJS 💻 React Native 💻 PHP (Yii Framework) 💻 Java 💻 MySQL 💻 Linux Ubuntu 💻 MacOS 💻 Claude 💻 OpenAI 💻 Cursor Best Regards, Feb Keywords: React Native Developer / Mobile App Developer / Cross-Platform Mobile App Developer / iOS App Developer / Android App Developer / Hybrid Mobile App Developer / Full Stack Developer / MERN Stack Developer / React Native Development / React Native App Developer / React Native App Development / React Native Expert / React Native CLI / React Native Expo / Mobile Application / Mobile App Development / Mobile App Developer / Build React Native App / React Native Bug Fixing / React Native Performance Optimization / React Native App Upgrade / React Native App Redesign / React Native UI Development / React Native API Integration / React Native Firebase Integration / React Native Authentication / React Native Push Notifications / React Native Payment Gateway Integration / React Native Real-Time App / React Native Database Integration / React Native Mobile App Development / AI Mobile App Developer / AI Mobile App / Full Stack Mobile App Developer / Mobile App Development Consultation / iOS Mobile App Developer / Android Mobile App Developer / Hybrid Mobile App / JavaScript Developer / TypeScript Developer / React Developer / Next.js Developer / Tailwind CSS Developer / HTML5 Developer / CSS3 Developer / UI/UX Developer / Node.js Developer / NestJS Developer / Express.js Developer / REST API Developer / Backend Developer / API Integration / MongoDB Developer / PostgreSQL Developer / MySQL Developer / Firebase Developer / Supabase Developer / AWS Developer / Docker Developer / CI/CD Developer / GitHub Developer / Cloud Deployment