Simon Goellner is a frontend web developer with 13 years of experience specializing in UI/UX, web performance, and building delightful, maintainable interfaces—particularly with SvelteJS and advanced CSS. He has driven large e-commerce and platform initiatives at Lane Crawford and Metafy, shipping high-impact features like customizable profiles, guides, and subscription communities while improving performance and SEO. An active open-source contributor, Simon has created polished UI-focused projects (notably intricate CSS effects for Pokémon cards) and contributed to popular libraries like slick and cash, often adding accessibility, visibility, and test improvements. He’s comfortable owning platform components that accelerate team delivery and routinely bridges design and engineering to craft usable, robust experiences. Based in Hong Kong, he combines craft-level front-end craftsmanship with a pragmatic focus on the “last 10%” that makes products feel finished. An avid tinkerer, he showcases experiments and micro-projects on CodePen and npm that reveal his attention to visual detail and performance.
13 years of coding experience
11 years of employment as a software developer
Bachelor of Arts - BA, Web & Communication Design, Diploma, Bachelor of Arts - BA, Web & Communication Design, Diploma at University of Portsmouth
A collection of advanced CSS styles to create realistic-looking effects for the faces of Pokemon cards.
Role in this project:
Front-end Developer
Contributions:106 commits, 19 PRs, 47 pushes in 9 months
Contributions summary:Simon primarily focused on developing CSS styles for Pokémon cards within this repository. Their contributions involved adding new styles for various card rarities (e.g., V, VMAX, Rainbow, Secret Rare) and effects (e.g., holo, galaxy, radiant). They also worked on performance and UI/UX improvements. Additionally, they seem to have made adjustments to include mobile support and some data manipulation.
Plugin for adding little 'pips' , 'floats' and labels to a slider.
Role in this project:
Front-end Developer
Contributions:10 releases, 367 commits, 11 PRs in 9 years 2 months
Contributions summary:Simon primarily contributed to the development and enhancement of the jQuery UI Slider Pips plugin. They focused on improving the demo examples, including adding new functionalities like floating labels and custom labels. Their work involved changes to the core plugin, demo files, and the addition of minified versions, demonstrating expertise in JavaScript, CSS, and integrating with jQuery UI. Furthermore, the user implemented Google Analytics tracking, indicating some level of involvement with web analytics.
sliderfloatspluginpips
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