Software Architect at Orbitant, based in Madrid. I maintain TWD (Test While Developing), an open source testing ecosystem I build with the team at BRIKEV.
The idea behind everything I work on: tests should run while you develop, not after.
Frontend tests that run in your real browser, against your real backend. No jsdom, no separate E2E stack.
| Package | Version | What it does |
|---|---|---|
| twd-js | In-browser test runner with a live sidebar UI. Works with React, Vue, Angular and Solid. | |
| twd-relay | WebSocket relay so AI agents and external tools can trigger and observe test runs. | |
| twd-cli | Headless runner for CI, powered by Puppeteer. | |
| twd-ai | Claude Code plugin and skills so AI agents write and run TWD tests on their own. |
Start at twd.dev. The thinking behind the approach lives in twd-principles.
- TWD: Una nueva forma de testear el frontend (Spanish)
- Testing while developing: una nueva forma de testear en frontend (Spanish)
- Podcast: Una nueva forma de testear frontend con TWD (Spanish, also on Spotify)
- Podcast: How to Test This #14: How to Test with Testing While Developing (TWD) (English, also on Spotify)
I write about testing and the TWD approach on dev.to.






