All projects
Projects that show how I think about systems: an idempotent checkout, open source in production and tools I use daily.
De Lá do Pará
A shop for products from Pará built with Spring Boot + Angular, with a checkout designed to never charge twice: idempotency, transactional outbox, webhooks and Kafka.
ai-memory contributions
3 merged PRs in an open source project with 8,800+ stars: a Windows-only bug and two duplicate-hook fixes.
Supply Chain API + Web
Supply-chain tracking monorepo built with Spring Boot, Angular, RabbitMQ and PostgreSQL.
Tokidachi
A GNOME Shell widget that shows Claude Code and Codex usage limits, with percentages, reset times and Dark, Light and Glass themes.
Preliminary Territorial Diagnosis
An educational Python prototype that reads public environmental data for a territory (GeoJSON) and shows deforestation, conservation units and priority areas, always with source and limitation.
Cadê meu dinheiro
Personal finance app with budgets, goals and Android expense capture.
LocalBridge
Private P2P file transfer between Android and Linux over the local network, built with Flutter.
Algebra Tiles
Educational application for manipulating algebra tiles and making algebra learning more visual and interactive.
ReceitasApi
Full-stack recipe and meal-planning application built with Spring Boot and Angular.
Serious Game Integral
Python serious game focused on learning integrals, combining programming, education and mathematical content.
SRAG Dashboard
Python project for analyzing script changes and supporting visualization of the e-SUS Notifica data dictionary.
Random Playlist Generator
Random playlist generator by genre, created as an academic project with practical use for music discovery.
Movie Rental
Technical case solution for a rental store, focused on modeling, business rules and Java backend.
HTML Analyzer
Java study project to understand how native libraries handle HTML reading and analysis.
Fuzzy System
Python project focused on fuzzy logic, useful for exploring approximate decision-making and intelligent systems.
Evolutionary Computing and Metaheuristics
Python studies on evolutionary algorithms and metaheuristics for solving search and optimization problems.
Wine Quality Analysis
Academic Python/Jupyter analysis with linear regression and classification on a public wine quality dataset.
Decodmetar
Validador e decodificador de METAR com Expressões Regulares e AFNε (LFA - CESUPA)
Mlp Som Seoul Bike Renting
Projeto para MLP e SOM sobre aluguel de bicicletas na capital de Seoul. Tem com objetivo precisar quantas bicicletas são alugadas por hora por variáveis preditoras como o clima
Tucupass
Inscrição, ingresso com QR e check-in ao vivo para eventos de comunidade (Phoenix LiveView)
Heatcode
Heat map of technical debt for Java projects
Tokidachi Win
Native Windows tray host for Tokidachi collector
Tokidachi Mac
Native macOS menu bar host for Tokidachi collector
Gastei Quanto
Local API cost estimator for Claude Code and Codex CLI logs