Hey, I'm Julián Castro Pulgarín

I'm obsessed with turning data into products that solve real problems.

I build end-to-end solutions: from the math behind neural networks to ML systems at scale to the interfaces people actually use. I call it being a Full-Stack Data Scientist—someone who goes from theory to production, from algorithm to user experience.

For 3+ years at Inchcape, I've scaled a pricing optimization system across 56+ markets. Now I'm leading the unification of our ML framework—turning silos into a single, scalable solution.

I co-founded Arithmental an edtech platform teaching mental math to 1000+ kids. I'm also building Registrap, a platform where you can track anything with AI agents that reveal hidden patterns in your life. It's about using your data to gain an unfair advantage.

Beyond code: I love off-roading through Colombian mountains, mapping genealogy trees (traced my family back generations), and collecting handmade art. When someone gives me a problem, I become obsessed—I dive deep, learn what's needed, and build the solution.