MetroEx
Offline-first metrological management app for calibration labs, published on the App Store and Play Store. Built for reliability with full offline data capture and background sync.
FlutterDartMobXOffline-FirstGolden TestsAzure CI/CD
A developer who ships
I'm a Senior Flutter & Fullstack Developer with 4+ years building production mobile apps for Android, iOS and Web. I specialize in offline-first architecture, Clean Architecture / MVVM and clean, well-tested Dart codebases (TDD, golden tests, CI/CD on Azure DevOps).
Beyond Flutter, I build complete backends with Node.js, PostgreSQL and Firebase — REST APIs, real-time WebSocket systems and React dashboards. I integrate AI / LLM APIs into real products. I collaborate with international teams (EN / PT / ES) and care about performance, UX and clear communication. Available for remote positions and freelance / consulting work worldwide.
Selected work
Real, shipped products — from offline-first enterprise apps to full-stack platforms.
ChamaFácil
Full-stack delivery dispatch platform with real-time driver tracking, push notifications and job queues — mobile app, web dashboard and a high-throughput backend.
FlutterReactNode.jsPostgreSQLRedisWebSocketFCM
Ficar Limpo
Consumer mobile app published on the Play Store, focused on a smooth, responsive Flutter UI and clean state management.
FlutterDartREST API
ReciboAI
AI-powered receipt & document generator with a freemium model — built end-to-end, from landing page to LLM integration and billing.
FlutterClaude APIAISaaS
Tech stack
⚔ Core
- Flutter
- Dart
- Mobile Architecture
- State Management
- MobX
- Provider
🛡 Architecture
- Offline-First
- Clean Architecture
- MVVM
- TDD
- Golden Tests
🔥 Backend & Cloud
- Node.js
- PostgreSQL
- Firebase
- REST APIs
- WebSocket
- Redis
- CI/CD
🌐 Web & Extras
- React
- TypeScript
- AI Integration
- LLM APIs
- Azure DevOps
- Git
- FCM
Common questions
Are you available for freelance or remote Flutter projects?
Yes — I'm open to freelance contracts, remote full-time roles and consulting work worldwide. Projects of any size: from MVPs to enterprise apps.
Are you a fullstack developer or only Flutter?
Both. Flutter is my specialty, but I build complete systems: Node.js backends, PostgreSQL databases, Redis queues, WebSocket real-time layers and React web dashboards. I deliver the full product, not just the app.
What platforms do you target?
iOS, Android and Flutter Web — all from a single codebase. I have apps published on the App Store and Play Store.
What is your tech stack?
Mobile: Flutter, Dart, MobX, TDD, Clean Architecture. Backend: Node.js, PostgreSQL, Firebase, Redis, WebSocket. Web: React, TypeScript. AI: Claude API, LLM integrations. DevOps: Azure DevOps CI/CD, Git.
How can I contact you?
Email: [email protected] · WhatsApp: +55 38 98421-0010 · LinkedIn: linkedin.com/in/diego-emanuel/ — I usually reply within a day.
Let's build something
Looking for a Senior Flutter or Fullstack developer for a remote role or freelance project? Rest by the fire and send a message — I usually reply within a day.