Alfonso Cartes

I'm a Senior Full-Stack Software Engineer based in London with over a decade of experience building web and mobile applications. My career started with freelance web development in 2005, progressed through roles at Dun & Bradstreet and Apple, and evolved into leading engineering teams at startups and scaling platforms.

I specialize in the JavaScript/TypeScript ecosystem — React, React Native, Next.js, Remix, and Expo — with a strong focus on the frontend. I believe the user experience is the most important metric for any product's success, and I bring that principle to every project, whether it's a new web app, a cross-platform mobile application, or an optimization of an existing product.

Over the years I've led full-stack development for a travel technology platform at Wandity, built food ordering systems and white-label solutions at Kukd.com, and delivered projects for clients across e-commerce, SaaS, and community platforms. I studied Computer Science at the Autonomous University of Madrid, which gave me strong fundamentals that I continue to build on.

Beyond engineering, my background in business development, customer service, and tech support at Apple gives me a perspective that goes beyond code. I understand how users think, how products fit into businesses, and how to communicate across technical and non-technical teams.