My name is Carlos Cuesta I'm a Front End Engineer based in Barcelona ☀️. I describe myself as a passionate developer who loves coding, open source, and the web platform ❤️.

Aside from my job, I like to create and contribute to open source projects. That helps me to learn a ton of new stuff, grow as a developer and support other open source projects. Also I enjoy writing technical things ✍️ at my blog.

In my free time you can find me longboarding 🛹 , at the gym 🏋️‍♂️, at the beach 🏖 or on tech meetups and conferences around Barcelona and Europe 🗺




April 2021Now

Lead Web Engineer

September 2022Now

Senior Web Engineer

April 2021September 2022



January 2017March 2021

Lead Front End Engineer

March 2018March 2021

As a Lead Front End Engineer, one of my main tasks was to mentor coworkers of my team, contributing to their personal and professional growth. I worked very close to stakeholders to define, organise and breakdown new projects. One of the biggest challenges I faced with my team was to migrate the ulabox.com website to a new business model while refactoring the entire technology stack to Next.js and React. We had to integrate this pivot into the Ulabox application too. I've worked with the logistics team to build Android applications with React-Native for our supply chain and dark stores.

Front End Engineer

January 2017March 2018

As a Front End Engineer I contributed to the development and release of the native Ulabox application. The application is built with React-Native and is available on iOS and Android. I worked on automating the process of shipping our applications to the stores using Fastlane and Travis-CI. Also I contributed to the maintenance of our website, that was built on top of Symfony using Twig, SCSS and JavaScript.


Front End Developer at Mediàtic

March 2015December 2016

As a Front-End Developer I created a lot of different websites for our clients using Wordpress as a CMS and HTML, CSS and JavaScript to built the sites. I helped to improve the developer experience of the company by implementing tools to improve our software development process.

Friendly Rentals

Front End Developer Intern at Friendly Rentals

October 2014February 2015

As an intern on Friendly Rentals I helped on building pages of the website using Bootstrap, HTML, CSS and jQuery.


CFGS DAW at Escola Jesuïtes El Clot

September 2013June 2015

A two years degree about building web applications. Using Front-End and Back-End technologies.

Self-taught at anywhere in the 🌍

December 1995Now

The things I learned by myself became the vast majority of what I know today. #AlwaysLearning