Portfolio

Building with AI, shipping with confidence

António's current focus is AI-assisted engineering: using AI agents to build real products, and AI to keep them tested.

Featured project Live in production

Moneydy

A personal finance SaaS António founded and built solo — engineered with AI agents and protected by Playwright tests that are generated and maintained with AI.

  • Claude Code
  • AI agents
  • AI-generated tests
  • Playwright
  • SaaS
Visit moneydy.com Try the live demo

The product

Expenses, budgets, savings, stocks and crypto rolled up into one live net-worth number. Prices refresh themselves, budgets count down in real time and alerts fire at 80% and 100%. Free and Premium plans in EUR, USD and BRL, with a no-signup live demo.

Built with AI agents

Designed and built end to end by one person with Claude Code. AI agents take on much of the implementation, while António owns the product direction, the architecture and the quality bar.

Tested with AI

Playwright end-to-end tests are generated and maintained with AI, so coverage keeps pace with a codebase that moves at AI speed — an SDET's safety net for AI-written code.

Role
Founder · solo
Built with
Claude Code · AI agents
Testing
Playwright + AI
Status
Live in production

Archive

Earlier web development work

Projects from António's years as an OutSystems consultant and front-end developer (2009–2020).

Bstrong

E-commerce online store.

Catarina Martins

Online store for Season Temptation.

Emboscada

E-commerce online store.

Biostrument

Standards-based, cross-browser web app redesign.

Ipatimup — Parking

Parking lot management with vehicle registration and card printing.

Ipatimup — Stock Manager

Barcode tracking of hazardous chemical materials.

Lipor — EcoShop

Accessible touch-screen recycling rewards app.

Unicer

SAP-integrated mobile approvals web app.