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The story

From “sternocleidomastoid” to configuring pods.

In July 2025 I didn't know how to code. A year later I have thirteen products, eleven in production, all built by me, with AI as my main mentor. This is the story of how it happened.

César Méndez

ChatGPT

The first mentor

Where I discovered I could build. Two books before the first line of code.

Gemini

The workshop

Months learning the machine: Firebase, keys, training my own AI.

Claude

The favorite toy

The one I built AMIA and almost everything else with. It replaced my first console.

July 2025

The leap, without even knowing Excel

I started without knowing how to code; I didn't even know my way around Excel. But I'd carried ideas for years that I never had time to build. I watched videos, got obsessed with what AI could do, and realized I finally had the tool to get them out of my head.

First weeks · ChatGPT

Crazy things, very fast

With ChatGPT I pulled off in days what I thought was impossible. So fast that before writing my first app I'd already written two books: El Arte de Sanarse and Legado. AI didn't autocomplete me: it taught me.

Gemini · Antigravity

TrueSelf and learning the machine

I moved to Gemini for several months, discovered Antigravity, and built TrueSelf by pouring my ideas straight into the AI. That's where I truly learned: Firebase, keys, accounts, how to train my own AI inside the projects.

My hobbies, turned into software

From handwritten lists to EDGE

I brought my obsessions to life. EDGE, to do value betting with hard math and statistics; as a kid I made lists upon lists by hand. Copo-Delivery, for my brother's master's. And a padel club app in Autlán: my first mobile app, fully functional with its web dashboard. The business didn't take off, but the halfway demo won them over.

Claude · AMIA

The monster that started as a hobby

Fed up with medicine's horrible systems, I moved to Claude, which became my favorite toy since they gave me my first console; it has already replaced it. AMIA started as an experiment: transcribe a consultation's audio and generate the note. Today it's AMIA Health Tech, ready to take on LATAM.

The explosion

A mind running at full speed

With everything polished and my mind racing, I built for the joy of it: EVolve to learn poker, OMNIS to seek enlightenment, Provecho for Miriam and meals at home, AMIA ENARM to prep for the ENARM, and PRIMUM, where I retrain MedGemma 4 and Gemma 4 on RunPod so they don't fail on clinical cases. I went from hearing 'sternocleidomastoid' to configuring pods and keys.

The validation

A stranger paid for what I built

A doctor, a friend of a former fellow resident, paid 6,000 pesos to join AMIA as a founder. I felt tremendous joy: someone who didn't know me validated my product. That's when I knew this was real.

Doctor-Coded

I didn't learn to code to switch careers. I learned to build what, as a doctor, I knew was missing.

Technology can be learned. Domain mastery is lived. That's the unfair advantage: a surgeon who understands what truly hurts, with the tools to solve it himself.

See what I built