About Xavi.

I'm an entrepreneur, creative, and developer based in Barcelona. Twenty-three years of building things that ship — across software, hardware, design, and lately, AI tooling. Started writing code around 20; the public portfolio starts a little after that, once it was worth showing.

The combination is the point. Most "AI prototyping" people are software-only. Most makers don't ship production AI software. I do both, end-to-end. Same week I'll wire up a FastAPI Lambda, model a 3D-printed enclosure for an ESP32-based LED controller, and design the brand identity that wraps it all.

What I've founded

Barcelona BITS — international tech show I ran from 2011 to 2015, peaking at 5,000 attendees. Barcelona Developers Conference before that. Both eventually wound down because I couldn't dedicate more time to them.

What I'm building now

s1gma — preparedness affiliate engine and Mike persona on X. mediagram — local-first AI content tool, “ComfyUI for content,” landing Q4 2026. ahoy.deals — B2B niche tool for makers and creators, Q1 2027. Plus the occasional hardware project.

How to work with me

I take on a small number of consulting and prototyping engagements between ventures. The best ones sit between domains nobody else combines: software and hardware, brand and code, weird ideas with technical depth.

Email is the fastest way: me [at] xavicolomer [dot] com. I reply within 3-4 business days.