My Projects
Check out some of my projects
Payment Reliability Lab
An interactive simulator of what goes wrong in a payment flow: timeouts, duplicate and out-of-order webhooks, acquirer outages. You inject the faults and watch retries, idempotency, failover and reconciliation respond.
TypeScript · Next.js · React · Vitest
jobqueue
An asynchronous job processing service in Go that uses PostgreSQL as both job store and queue: a bounded worker pool claims jobs, retries failures with backoff and recovers work left behind by a crashed process.
Go · PostgreSQL · pgx · Prometheus
TemNoBar
A bar menu management product built end to end: a REST API, a web dashboard with a public QR menu and a mobile app, all on the same API.
TypeScript · Next.js · Express · Prisma
br-utils
A zero-dependency TypeScript library and CLI to generate, validate and format Brazilian CPF and CNPJ, including the alphanumeric CNPJ introduced in 2026. Published on npm, with a web playground.
TypeScript · Node.js · Vitest · fast-check
PrimeiroApê
A free planner that helps young adults in Brazil prepare for their first home purchase: a readiness score, a personalised purchase plan, a financing estimate and a breakdown of hidden costs.
TypeScript · Next.js · React · Tailwind CSS
BarHub
A front-end-only restaurant operations dashboard built with Next.js, TypeScript and Tailwind v4, with demo authentication and mock data kept in the browser.
TypeScript · Next.js · React · Tailwind CSS
Beer Fridge API – ExpressoTS POC
A REST API proof of concept built to evaluate the ExpressoTS framework: dependency injection, modules and use cases over PostgreSQL with Prisma.
TypeScript · ExpressoTS · Node.js · PostgreSQL
