Juan Andrés Núñez.

Senior Frontend Engineer specializing in Agentic AI, professional educator and speaker. Where engineering meets humanism.

Juan Andrés Núñez
Focusing on

Building FrontendLeap: teaching how to build the professional Web with GenAI and learning science.

Helping companies and teams go AI First on the Claude platform.

Claude Code

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Claude Code: from zero to professional. Tips, tutorials and deep dive guides from an engineer who uses it 12 hours a day.

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#169

Claude Code task list: your model writes it but no longer saves it

You ask for the list, Claude writes one out, and it all looks normal. But Ctrl+T is empty and nothing survives /compact: since 2.1.233 the newest models ship without the tools that fill it.

#168

Claude Code notifications on your phone: it wasn't frozen, it was waiting on you

You kick off a long task, walk away for twenty minutes, and come back to zero progress. It did not crash: it spent eighteen of those minutes waiting for you to approve one permission, and you were not there to see it.

#167

Claude Code dynamic workflows: choose the size before a run chooses it for you

A workflow can reach 1,000 agents. There is a setting that tells Claude how many to aim for, it ships at 15, and almost nobody knows it is there.

#166

Claude Code timeout: at two minutes everything gets rescued except git

Your long command cuts off at two minutes and you read it as a failure. It is usually still alive. Usually.

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