Experience
Founder · Lead Engineer
- Architected and shipped a fullstack delivery dispatch platform: Fastify 4 REST API, PostgreSQL 16, Redis 7 for ephemeral GPS state (TTL 10s), WebSocket hub for live tracking, Flutter driver app (+ iOS PWA), and two React dashboards.
- Built production product features: neighborhood pricing, multi-region geo restrictions, quick-call dispatch, org lifecycle, Mercado Pago PIX settlements, append-only financial ledger and JWT split tokens.
- Added AI/GTM layer: WhatsApp sales agent (Claude) and self-service checkout; CI/CD on Cloudflare Workers + GitHub Actions + Docker.
Node.jsFastifyPostgreSQLRedisWebSocketReactViteFlutterFirebase FCMCloudflare WorkersClaude API
Senior Flutter Engineer
- Own the Flutter mobile layer of MetroEx (industrial metrology / ISO 17025): offline-first sync, local calculation and field data integrity for low-connectivity environments.
- Shipped an offline audit trail (local logs → Mixpanel flush on reconnect) and architecture refactors for large controllers; ~30% more test coverage, 99%+ crash-free, Azure DevOps CI/CD.
FlutterDartObjectBoxREST APIOffline-FirstClean ArchitectureAzure DevOps
Software Developer
- Built Flutter interfaces serving 5,000+ users; MobX state management and modular architecture. Automated testing and CI/CD via Azure DevOps (~50% faster deploy cycle).
- Full-stack ownership of ERP modules and business management software for SMBs — from database design to UI delivery.
FlutterMobXFull StackERPREST APIsSQL
Selected Projects
ChamaFácil
chamafacil.com.br
Delivery dispatch platform: Fastify API + PostgreSQL + Redis + WebSocket + Flutter (+ iOS PWA) + React + FCM. Append-only financial ledger, JWT split tokens, Mercado Pago PIX, multi-region geo and live GPS tracking.
ReciboAI
AI-powered receipt generator: Flutter app + Claude API + freemium billing. Built end-to-end — LLM prompt engineering, payment integration and landing page.
PM-PE
Flutter field app for Pernambuco State Police — offline-first data capture with real-time sync, built for high-reliability government environments.
Skills
- Backend Node.js, Fastify, Express, REST, GraphQL
- Databases PostgreSQL, Redis, Firebase, SQLite
- Realtime WebSocket, Server-Sent Events, FCM
- Frontend React, TypeScript, Vite, Tailwind
- Mobile Flutter, Dart, iOS, Android, Flutter Web
- Architecture Clean Arch., MVVM, Offline-First, TDD
- AI/LLM Claude API, WhatsApp agents, prompt engineering
- DevOps Cloudflare Workers, GitHub Actions, Docker, Azure DevOps
- Payments Mercado Pago PIX, settlements, webhooks
- Auth JWT (access + refresh), bcrypt, OAuth2
- Languages English · Portuguese · Spanish
Education
Systems Analysis & Development
UNITINS / UNOPAR — 2018–2020
Published Products
- ChamaFácil Live at chamafacil.com.br
- Welcoming Play Store
- Ficar Limpo Play Store
- ReciboAI Flutter + Claude API
About
8+ years in software, 4+ in Flutter, with fullstack ownership across the entire product: mobile app, REST API, real-time layer, web dashboard, CI/CD and AI integrations. Based in Brazil (UTC-3) — 4–6h overlap with US Eastern, full afternoon overlap with CET. Experienced working async with English-speaking remote teams. Open to remote full-time and freelance roles.