Sean van Zuidam

Frontend Developer at Hyvä, creator of Fylgja 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 Repository View 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