Guillaume Breux, JavaScript Developer in La Massana, Andorra
Guillaume Breux

JavaScript Developer in La Massana, Andorra

Member since February 24, 2018
Guillaume started his career as a graphic designer and photographer which enabled him to cultivate a critical eye for striking imagery and gorgeous designs. He then started studying web design and fell in love with the development world. He has been working as a full-time freelancer for a few years now—helping people to build brilliant interfaces that balance beauty, performance, and accessibility.
Guillaume is now available for hire


  • Once
    Webflow, Jekyll, Angular, React
  • Crokmou
    JavaScript, Hugo



La Massana, Andorra



Preferred Environment

VSCodium, Git, MacOS

The most amazing...

...thing I've built is a food blog which involved a migration from WordPress and ended up with an almost-perfect score on a Lighthouse audit.


  • Web Developer

    2015 - 2019
    • Developed a web application that creates a similar UX to a full desktop experience.
    • Built an internal dashboard for the internal team of moderators.
    • Constructed a full static landing page using a static website generator.
    • Developed multiple small applications for public relations (PR) purposes.
    • Created all the marketing and transactional emails.
    Technologies: Webflow, Jekyll, Angular, React
  • Web Developer

    2017 - 2017
    • Transferred all the content from WordPress to Markdown using custom Node.js scripts.
    • Developed the blog based on provided designs using the mobile first and BEM methodologies.
    • Implemented a Lighthouse audit to reach a nearly perfect score.
    • Reduced the page load from 19 seconds to less than 2 seconds in a 3G network using all the best practices available.
    • Created an automated deployment process to deploy changes with every image uploaded to a particular repository; all server less.
    Technologies: JavaScript, Hugo


  • Crokmou (Development)

    Crokmou is a French food-and-travel blog that displays a lot of beautiful pictures. There is a great number of recipes to give you ideas about what to cook tonight. Everything is built serverless to provide a super fast and reliable experience.

  • One-badge (Development)

    Ever been tired of dealing with store badges especially if you need to translate them? One-badge allows you to get a single link per store and will display an official translated badge for Android or iOS.

  • Client-side vs. Server-side vs. Pre-rendering for Web Apps (Publication)
    There's no question that user experience is impacted by perceived load times. With today's heavier front ends, client-side rendering doesn't feel very fast. In this article, Toptal Freelance Front-end Developer Guillaume Breux compares client-side, server-side, and pre-rendering strategies to help you choose the best option for your own app.


  • Languages

    HTML5, SCSS, CSS3, CSS, HTML, JavaScript, PHP, Less, Hugo
  • Frameworks

    Next.js, Redux, Bootstrap, Angular
  • Libraries/APIs

    Flexbox, React, jQuery
  • Tools

    Sketch, Photoshop 2018, Figma, Git, IntelliJ, Jekyll
  • Paradigms

    BEM, Search Engine Optimization (SEO)
  • Other

    Serverless, SVG, Responsive UI, PSD Slicing, CSS Grid, VSCodium
  • Platforms

    Webflow, MacOS


  • Internship in Web Design and Front-end Development
    2014 - 2015
    CEPEGRA | Center Competence Forem Cepegra - Brussels, Belgium
  • Bachelor's degree in Photography
    2010 - 2013
    INRACI | Institut National de Radioélectricité et Cinématographie - Brussels, Belgium
  • Bachelor's degree (unfinished) in Computer Graphics
    2009 - 2010
    HEAJ | Haute École Albert Jacquard - Namur, Belgium

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