FERNANDO RUIZ
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Fernando Ruiz

Fernando Ruiz

Product Designer &
AI Builder

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Ux6 Desarrollo3 Development3 Vibe Coding12 Agentic Engineering11 Claude Code10 AI7 IA7 Productividad5 Productivity5 Seguridad1 Design2 Diseño2 Ingeniería Agéntica2 OpenCode2 SaaS2 Security1 Tutorial2 Case Study1 Caso De Estudio1
Loop Engineering: Stop Prompting Agents, Start Designing the System That Prompts Them
AI

Loop Engineering: Stop Prompting Agents, Start Designing the System That Prompts Them

Loop engineering replaces you as the person who prompts the agent. You design the system that does it instead — five pieces, one memory, and a verifier you trust.

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I Made Claude Opus 4.8 Manage Another AI Agent While I Worked
AI

I Made Claude Opus 4.8 Manage Another AI Agent While I Worked

How I built a ticket-based workflow where Claude Opus 4.8 orchestrates OpenCode, cutting token waste while preserving review, visibility, and control.

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AI Pipelines: How I Built Systems That Work While I Sleep
AI

AI Pipelines: How I Built Systems That Work While I Sleep

CareerOps, content curation, and Obsidian automation: three AI pipelines that replaced months of manual work with systems that run on their own.

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I Built a Medical SaaS With AI. Then I Got Hacked. Here's the Case Study.
AI

I Built a Medical SaaS With AI. Then I Got Hacked. Here's the Case Study.

A Product Designer's honest case study: building a real medical scheduling SaaS with AI, surviving a cryptominer attack, and everything it took to recover.

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Designing in Words: How AI Turned UX Designers Into Their Own Frontend Engineers
AI

Designing in Words: How AI Turned UX Designers Into Their Own Frontend Engineers

The gap between your Figma file and what ships has always been a negotiation. AI just handed you the power to end that negotiation on your own terms.

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Claude Code Skills: The Professional Layer Most Users Ignore
AI

Claude Code Skills: The Professional Layer Most Users Ignore

You already use Claude Code. But if you're still typing the same prompts session after session, you're burning time on infrastructure instead of work. Here's how to build the system that professionals run on.

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Vibe Coding: What AI Won't Tell You Before Building Your First App
AI

Vibe Coding: What AI Won't Tell You Before Building Your First App

Before asking AI to build 'a flawless YouTube clone', read this. A survival manual for designers and creatives who want to build real products with AI without destroying themselves in the process.

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