-
Frontend and backend integrations: digital wallet top-ups, checkout, session handling and WhatsApp webview.
- 〔0〕 Nuxt 3
- 〔1〕 Pinia
- 〔2〕 Spring Boot
- 〔3〕 JWT
- Multi-tenant catalog API 〔GITHUB〕
Hexagonal Spring Boot API where Hibernate @TenantId isolates tenants from a Keycloak JWT claim, proven by Testcontainers integration tests.
- 〔0〕 Java 21
- 〔1〕 Spring Boot
- 〔2〕 Keycloak
- 〔3〕 PostgreSQL
- 〔4〕 Testcontainers
- WhatsApp booking agent 〔GITHUB〕
WhatsApp assistant that books appointments: signed Meta webhook, LangGraph state machine and an LLM that falls back to rules.
- 〔0〕 Python
- 〔1〕 FastAPI
- 〔2〕 LangGraph
- 〔3〕 WhatsApp
- 〔4〕 mypy strict
- Multi-tenant ecommerce
Hexagonal Spring Boot microservices, Nuxt storefront and admin panel, ePayco and Credibanco checkout.
- 〔0〕 Java 21
- 〔1〕 Spring Boot
- 〔2〕 Nuxt
- 〔3〕 Keycloak
- 〔4〕 Azure
- Notifications platform
I designed and built both services on my own: an email and SMS gateway on SendGrid, MailerSend and Sigma Móvil with delivery webhooks, and an orchestrator with templates and Quartz-scheduled sends.
- 〔0〕 Java 21
- 〔1〕 Spring Boot
- 〔2〕 Quartz
- 〔3〕 SendGrid
- 〔4〕 MailerSend
- 〔5〕 Sigma Móvil
-
WhatsApp purchase flow, ePayco integration, provider-portal endpoint hardening and CI on GitHub Actions.
- 〔0〕 Nuxt 4
- 〔1〕 Drizzle
- 〔2〕 PostgreSQL
- 〔3〕 ePayco
- WhatsApp agents
Support agent built on a state machine, plus a WhatsApp Business onboarding backend.
- 〔0〕 Python
- 〔1〕 FastAPI
- 〔2〕 LangGraph
- 〔3〕 PostgreSQL
-
Parking subscriptions and card payments with Credibanco and OpenPay.
- 〔0〕 Nuxt 3
- 〔1〕 Nuxt UI
- 〔2〕 Credibanco
- 〔3〕 OpenPay
- Promotions platform
Campaign rules engine, multi-site panel and business reports.
- 〔0〕 Spring Boot
- 〔1〕 Drools
- 〔2〕 Nuxt 3
- 〔3〕 Cloudflare
-
Full redesign and migration to Nuxt, with a per-product brand color system.
- 〔0〕 Nuxt 4
- 〔1〕 Tailwind CSS 4
- 〔2〕 Netlify
-
Contributions to the Nuxt app and the Astro landing pages.
- 〔0〕 Nuxt
- 〔1〕 Astro
- 〔2〕 Netlify
-
Lead-conversion analytics event on the thank-you page.
- 〔0〕 Astro
- 〔1〕 Analytics
- Raffle platform
Raffle organization with a payment validation panel.
- 〔0〕 Next.js
- 〔1〕 Prisma
- 〔2〕 Supabase
- 〔3〕 NextAuth