Hello there, I'm Guillermo de la Puente, a software engineer and product-minded tech leader with a passion for building high-quality web products that solve real problems.

I specialize in React, Node and AI technologies, and over the years I’ve been a developer, tech lead, team manager, contractor, and founder.

After falling in love with HTML, CSS and JavaScript, I joined a fast-growing startup in New York, and later opened and lead its international office in Madrid. After 8 years, I chose to go independent, exploring new projects, working remotely, and sharpening my product and technical skills as a freelancer and co-founder.

Now I'm back to building teams and driving product execution at haddock, in Barcelona. I care deeply about creating thoughtful, effective work environments and helping engineers do their best work. I still write code every day, but I'm just as focused on the people, processes, and decisions that make a product truly valuable.

In my spare time, I debug TypeScript and Japanese grammar (日本語の文法).

Curious what I’ve built? Check out my portfolio, or get in touch if you’d like to collaborate.