Sole architect and developer of a custom e-commerce ecosystem for a premium home fragrance brand scaling across Brazil. Engineered the entire platform from scratch: a highly optimized Next.js storefront, a bespoke React backoffice for content and inventory management, and a lean Express + TypeScript backend on MongoDB — integrating Stripe for payments and Melhor Envio for automated shipping logistics.

Custom e-commerce platform built from scratch for a U.S.-based client, including a REST API backend, admin dashboard, and storefront using Express, MongoDB, and Next.js.

Financial diagnostic micro-SaaS built for Brazilian notary office holders (cartórios). Turns complex accounting into a minutes-long diagnostic: revenue visualization, tax base, deductible expenses, operational reserve, and net profit — all calculated in real time on the client. Ships with a freemium model (Lite/Pro), Clerk-based auth with plan tiering, and a retirement calculator integrated directly into the diagnostic flow.

A minimalist command-line to-do list built in C++, designed for developers who prefer staying in the terminal. Fast, distraction-free task management backed by SQLite3 — built as a hands-on exercise in data structures and systems programming.

Vertical SaaS for churrasco and BBQ foodtrucks — pre-launch MVP in final staging. Built as a complete operational ecosystem: QR-code digital menu with smart upsell logic (auto-suggests larger portions and drinks based on order behavior), a real-time Kitchen Display System (KDS) that replaces printers with a priority-coded tablet view, a reservation engine for advance orders with integrated payment, and a daily sales report dashboard. Sole architect and developer.

Consulted on two major public-sector platforms for the state of Goiás, handling frontend/backend integration with TypeScript, React, and Next.js.