Full-stack developer focused on TypeScript, React/Next.js and Node.js. I design, build and run systems that real businesses depend on every day — point of sale, payments, e-commerce sync, financial reports and WhatsApp/e-mail automation — from the database schema to the deploy.
- 🏗️ End-to-end ownership: data modeling, APIs, UI, integrations, monitoring and production migrations
- 💳 Money-safe code: integer-cent arithmetic, idempotent webhooks, row locks on concurrent writes
- 🔐 Security by default: JWT + 2FA, role-based access, multi-tenant data isolation, LGPD-aware audit logs
- ✅ Tested where it matters: pure business rules covered by Jest; E2E with Playwright
- 📚 Currently studying System Design, Clean Architecture and DevOps
Private repositories built for clients — code can't be shared, but I'm happy to walk through the architecture in an interview.
Multi-store management system running in production every day at the counter.
- POS with Mercado Pago Point terminals and Pix (server-side price validation, refunds, cash-register reconciliation)
- E-commerce sync with Nuvemshop: stock, prices, photos, orders and in-store pickup with verification codes
- Commission, payroll and financial engine in integer cents, with monthly goals and automated alerts
- WhatsApp Business (Meta templates) + e-mail notifications: receipts, payment links, task alerts
- Ticket queue with TV display and text-to-speech, Kanban with real-time chat, customer map with geocoding
- Scheduled jobs and webhooks with idempotency, Discord alerting and structured logging
Next.js 16 · React 19 · TypeScript · Prisma · PostgreSQL (Neon) · Mercado Pago · Nuvemshop API · Vercel · Jest · Playwright
Messaging service on the official WhatsApp Business API that other systems call to send messages and run automations, including a text assistant that turns WhatsApp requests into Kanban tasks.
Next.js · TypeScript · Prisma · WhatsApp Business API
Albion Market Pro — real-time market scanner for Albion Online: scans prices across all cities,
finds arbitrage opportunities with confidence scoring and calculates profit after taxes.
Next.js 15 · React 19 · TypeScript · Prisma · PostgreSQL · Redis · Zod · TanStack Table
Languages
TypeScript · JavaScript · Elixir · Python
Web frontend
React · Next.js · Astro · Vite · Tailwind CSS · HTML · CSS
UI, state & forms
shadcn/ui · Radix UI · TanStack Query · React Hook Form · Zod · Zustand · Framer Motion · GSAP
Mobile web
PWA (installable + offline + web push) · Web Bluetooth (thermal printers)
Backend, data & real-time
Node.js · Prisma · PostgreSQL · Redis · Neon · Upstash · Socket.IO · Pusher · Better Auth · JWT
Payments & integrations
Stripe · Mercado Pago (Point + Pix) · WhatsApp Business API · Resend · Puppeteer
AI / LLM
Claude API · Anthropic SDK · OpenAI API
Testing
Jest · Vitest · Playwright · Testing Library
DevOps & tools
Git · GitHub Actions · Docker · Vercel · VS Code
Learning next
React Native · Expo · AWS
