Now | Julián Castro Pulgarín

🚀Building

Registrap

Building a personal data analytics platform powered by conversational AI. After several months of development and important technical learnings, I'm in the final phase before launching the MVP.

Arithmental

Co-founder and developer of this educational platform for teaching mental math to children. We've been growing for 2 years and continuously improving the learning experience. We are about to enter the children's vacation period, so we expect a rebound in our sales.

Vera Inventory

Coming soon: inventory management system for hotels and restaurants using computer vision. Team project with UX/UI designers and industry experts.

💼Working

Senior Data Scientist at Inchcape DDC, leading ML-powered pricing optimization solutions for automotive brands at global scale. I am currently leading the creation of the optimization framework that we will use globally, no more silos within the same product (this involved changes in the architecture to improve things for both teams and resolve technical debt).

📚Learning

Deep diving into LLMs, Neural Networks, and AI Agents. I'm passionate about understanding the mathematical fundamentals behind these systems and writing about them. I am considering a change to a role more focused on deep learning and unstructured data problems, in addition to reinforcement learning. I am obsessed with AGI and AI with a body and knowledge of the world.

💪Training

Training 3-4 times per week at ActionBlack. Focused on maintaining consistency and physical discipline. The goal is to increase muscle mass. I currently weigh 67.2 kg with 16% body fat. Ideally, I would like to weigh 72 kg with 12% body fat.

🎯Focused On

Launching Registrap and validating it with real users.

Carry out projects related to deep learning (this involves studying and writing articles).

🏠Life

In January of this year, I moved in with my partner. On January 2026, we have to give up the apartment because we've been here for a year and want to move to a bigger place with an office for me too (since I wasn't originally going to live here, haha). We have traveled a lot in Colombia thanks to the purchase of the 2025 Suzuki Jimny we made in May of this year. We recently got our US visas, and we actively share with our families. I am thinking of becoming more involved with the tech community in my region.

I've also become a little more active on Instagram, where I'm sharing historical photos from my gallery of over 30,000 photos. Here's the link if you want to take a peek now. Instagram