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Projects

Projects

My own products and systems I have developed from problem to production. Each case study covers the product goal, the main technical decisions, the architecture and its current stage.

17 projects

FIInvest logoApp2026

FIInvest

Brazilian real estate fund portfolios with holdings, distribution history and dividend projections.

  • React Native
  • Expo
  • TypeScript
  • RevenueCat
View case studyIn production
Imóvel Gestor logoApp2026

Imóvel Gestor

Property records, inspections and financial tracking on mobile, with a companion web application.

  • React Native
  • Expo
  • TypeScript
  • Supabase
  • +1
View case studyIn production
Coz.IA logoApp2026

Coz.IA

Recipes based on available ingredients, with photo recognition and cooking instructions.

  • React Native
  • Expo
  • TypeScript
  • Supabase
  • +3
View case studyIn production
ESData logoSaaS2026

ESData

Organization management with configurable modules, separate customer data and role-based access.

  • Next.js
  • TypeScript
  • Supabase
  • PostgreSQL
View case studyIn production
Restaurar logoProduct2026

Restaurar

AI relationship guidance supported by reference content and risk checks before generation.

  • Next.js
  • React Native
  • Expo
  • TypeScript
  • +4
View case studyIn development
Product2026

ESInvestment

Platform in development for consolidating investments and tracking portfolio value, income and returns.

  • Next.js
  • TypeScript
  • Tailwind CSS
  • Supabase
  • +2
View case studyIn development
Prazo Guard logoApp2026

Prazo Guard

Warranties and subscriptions organized with documents, dates and reminders.

  • React Native
  • Expo
  • TypeScript
  • Firebase
  • +1
View case studyIn production
Moeda Rápida logoApp2026

Moeda Rápida

Offline currency conversion using the latest saved exchange rates, with a visible update date.

  • React Native
  • Expo
  • TypeScript
View case studyIn production
Lista Combinada logoApp2026

Lista Combinada

Shopping lists for private groups, with invitations, role-based access and barcode scanning.

  • React Native
  • Expo
  • TypeScript
View case studyIn production
FocuSound logoApp2026

FocuSound

Ambient sound mixer with individual track volumes, saved mixes and background playback.

  • React Native
  • Expo
  • TypeScript
View case studyIn production
Guardian logoTool2026

Guardian

Website blocking in Chrome, with password protection and protection-status alerts on the Pro plan.

  • JavaScript
  • Chrome Extensions (Manifest V3)
  • Node.js
  • Supabase
  • +2
View case studyIn production
B3 Quick Quote logoTool2025

B3 Quick Quote

B3 market quotes in Chrome, with ticker search, top gainers and losers, and price alerts.

  • JavaScript
  • Chrome Extensions (Manifest V3)
  • brapi.dev API
  • CSS
View case studyIn production
EurOrçamento logoOpen Source2025

EurOrçamento

Personal finances in euros, with income and expense tracking, categories and Excel export.

  • React
  • TypeScript
  • Firebase
  • Styled Components
View case studyIn production
Medicare logoOpen Source2025

Medicare

Household medicine records with quantities, expiration dates and a change history.

  • Ruby on Rails
  • Ruby
  • PostgreSQL
  • Tailwind CSS
  • +1
View case studyIn development
Open Source2025

Nutr.IA

AI-generated meal plan suggestions, with saved history and PDF export.

  • Next.js
  • TypeScript
  • Google Gemini
  • Firebase
  • +2
View case studyIn production
Meus Compromissos logoOpen Source2024

Meus Compromissos

Time-based weekly planning with tasks, progress tracking and automatic carryover of unfinished work.

  • Ruby on Rails
  • Ruby
  • PostgreSQL
  • Sidekiq
  • +2
View case studyIn production
Rails Toastify logoOpen Source2024

Rails Toastify

Configurable Rails notifications with flash and Turbo integration, without a React dependency.

  • Ruby
  • Ruby on Rails
  • JavaScript
  • CSS
  • +2
View case studyIn production