Sean van Zuidam

Frontend Developer atHyvä, creator ofFylgja CSS, and a firm believer in modular, performant web developement.

Based in Zwolle, Netherlands, I specialize in the technical implementation of design systems using HTML, CSS,JavaScript, and PHP. With nearly a decade of experience in the Magento ecosystem, I focus on bridging the gap between design and development.

Beyond the keyboard, I am a passionate gardener with a green thumb, a dedicated gamer, and a fan of metal music and anime.

Work Experience

  • Hyvä

    Frontend Developer

    Nov 2022 - Present

    Frontend developer with the focus on building Hyvä UI and improving the Hyvä Theme.

  • Mooore Digital (formerly Marissen e-commerce)

    Frontend Developer

    Aug 2017 - Oct 2022

    Kampen

    Frontend Developer specializing in high-performance Magento storefronts. Key responsibilities included mentoring new developers and leading the implementation of headless solutions using Vue, React, and PWA technologies, alongside custom WordPress integrations for Magento 2.

  • RIFF (formerly Jaagers BV)

    Frontend Developer

    Jan 2017 - Sep 2018

    Nijmegen & Zwolle

    Frontend developer focused on building high-quality Magento storefronts for a diverse range of clients.

  • Converzy

    Frontend Developer

    Oct 2015 - Jan 2017

    Zwolle

    Front-end developer with the focus of building the Magento front-end for Converzy projects. Also did some Wordpress and static sites.

  • Wezo Zwolle

    Technical support

    Nov 2012 - Jul 2014 & Jun 2015 - Oct 2015

    Zwolle

    Technical support specialist responsible for resolving hardware and software issues, managing the internal IT network, and overseeing the configuration of mobile devices and thin clients.

  • Masters of Media

    Web Designer

    Jul 2014 - Jun 2015

    Zwolle

    Front-end developer with the focus of building the Joomla front-end for Masters of Media projects. Also provided support for our clients: - How to use their site - Content support.

  • Wezo Zwolle

    Administration Packaging and assembly

    Apr 2012 - Feb 2013

    Zwolle

    Administrative role focused on production tracking and logistics documentation. Responsible for recording employee workflows and managing inventory movement through precise registration and documentation of finished goods.

Projects

  • Fylgja CSS

    2017 - Present

    Fylgja CSS is a library designed to help developers streamline their work with HTML and CSS. Unlike traditional CSS frameworks, Fylgja provides modular solutions that focus on simplicity, flexibility, and customization.

    View RepositoryView Website

  • Snap Slider

    2025 - Present

    A CSS-based slider/carousel component for Fylgja, hydrated by JavaScript for enhanced functionality while leveraging native CSS Scroll Snap for performance.

    View Website

  • Alpinejs Dialog

    2022 - Present

    An Alpine.js extension that brings the power of Alpine to the native HTML <dialog> element, making it easier to handle accessibility and state.

    View Website

Education

  • Ambelt Herfte

    1996 - 2012

  • Scheidegger

    MBO Professional Web Design, Web Design

    2014 - 2015

  • De Groene Welle

    MBO Niveau 2, Hovenier

    2009 - 2012

Licenses & Certifications

  • Hyvä Certified Professional Developer

    Issued Oct 2025

    View Credential

  • Hyvä Certified Associate Developer

    Issued Jun 2025

    View Credential

  • MBO Natuur en groene ruimte 2

    Issued Jul 2011