Javier Marin – Medium

Javier Marin

Featured Book

La aventura de trabajar en equipo

La aventura de trabajar en equipo

A comprehensive book about the keys that define effective teamwork

2025

Stories

Pinned

Published in

What is XML Prompting And Why You Should Care About It

The way you organize your prompt matters

Sep 8

What is XML Prompting And Why You Should Care About It

Sep 8

Pinned

Published in

APE: How Biology Taught Me to Fine-Tune AI Models 33% Better

What if the secret to better AI wasn’t more computing power, but understanding how life itself learns and adapts?

Jun 10

APE: How Biology Taught Me to Fine-Tune AI Models 33% Better

Jun 10

Published in

I Failed to Build a Learned Hallucination Detector

Here’s the Rule-Based System That Actually Works

Oct 21

I Failed to Build a Learned Hallucination Detector

Oct 21

Published in

What Happens When AI Agents Work Together?

Lessons from the Road

Oct 8

What Happens When AI Agents Work Together?

Oct 8

Published in

Context Engineering vs. Prompt Engineering

The work matters more than the name

Oct 1

Context Engineering vs. Prompt Engineering

Oct 1

Published in

Testing AI Systems Against Business Reality

Deployment Patterns That Survive Contact with Customers

Sep 30

Testing AI Systems Against Business Reality

Sep 30

Published in

How Prompting Helps You Comply with the EU AI Act (with examples)

Building systematic approaches to AI transparency, auditability, and risk management

Sep 24

How Prompting Helps You Comply with the EU AI Act (with examples)

Sep 24

Published in

How to Build Advanced Logic Into Your XML Prompts

Decision Trees and Boolean Logic for Production AI

Sep 22

How to Build Advanced Logic Into Your XML Prompts

Sep 22

About Me

Javier Marín

Sep 4

About Me

Sep 4

Towards a New Psychology of Human-AI Interaction

How the tools we create now will ultimately recreate us

Aug 30

Towards a New Psychology of Human-AI Interaction

Aug 30

Javier Marin

Javier Marin

Book Author

Getting AI from prototype → production with systematic failure measurement + compliance. Schedule a 30-min strategy call: ✉️ javier@jmarin.info

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