About Carlos
I build production SaaS end-to-end. I studied Computational Physics because I needed to understand how things actually work from the ground up. That same obsession now drives how I build software: from architecture to pixel.
Most recently I built Kultro, a multi-tenant B2B platform I built solo infrastructure, backend, frontend, design system. Before that, urban routing engines, drag-and-drop form builders, behavioral scoring systems.
If you're a founder who needs someone to own the technical side of a product not just execute tickets — we'll probably work well together.
Stack: Next.js · NestJS · TypeScript · PostgreSQL.
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Construyo productos SaaS en producción, end-to-end. Estudié Física Computacional porque necesitaba entender cómo funcionan las cosas desde la base. Esa misma obsesión ahora guía cómo construyo software: desde la arquitectura hasta el píxel.
Recientemente he construido Kultro, una plataforma multi-tenant B2B que he desarrollado solo infraestructura, backend, frontend y sistema de diseño. Antes, motores de routing urbano, constructores de formularios drag-and-drop y sistemas de scoring conductual.
Si eres fundador y necesitas a alguien que se haga cargo de la parte técnica de un producto no solo ejecutar tickets probablemente encajemos bien.
Stack: Next.js · NestJS · TypeScript · PostgreSQL.
Spanish
Native or bilingual
Catalan
Native or bilingual
English
Native or bilingual
Can work on-site
Barcelona (up to 50km)
Experience
- Kultro (Kultrohub S.L.)Lead DeveloperJanuary 2025 - Today (1 year and 6 months)Barcelona, SpainB2B SaaS platform for trade shows and commercial events. Lead capture through NFC and QR, behavioral analytics, and prospect classification by personality archetypes. Built the entire multi-tenant architecture solo from infrastructure to design system.
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Education
- BSc Computational PhysicsUNED — Universidad Nacional de Educación a Distancia2026BSc
Certifications
- Bootcamp FullstackIsdi Coders2023