Johannes Siipola
Front End Developer at Creuna
Helsinki, Finland
Summary
👤
Senior🎓
Top SchoolJohannes Siipola is a Front End Developer based in Helsinki with 14 years of experience crafting usable, performant and accessible web interfaces. He blends hands-on design, development and DevOps work—shipping CRUD React apps day-to-day while also improving UI responsiveness and mobile layout issues in open-source projects like the Slim Framework website. At Creuna since 2017, and previously at Exove, he has focused on practical front-end solutions that prioritize real-world usability and cross-device reliability. Known for getting his hands dirty across the stack, he brings a pragmatic attention to details such as padding, line breaks and CSS compilation that noticeably improve user experience.
14 years of coding experience
2 years of employment as a software developer
Upper Secondary School, Upper Secondary School at Helsinki School of Natural SciencesDegree Programme in Business Information Technology, Business Information Technology, Degree Programme in Business Information Technology, Business Information Technology at Haaga-Helia University of Applied Sciences
Finnish, English, Swedish
Github Skills (6)
css10
responsive-design10
lessc10
html9
bootstra8
bootstrap8
Programming languages (14)
Github contributions (5)
slimphp/Slim-Website
Oct 2015 - Oct 2015
Slim Framework website for GitHub Pages
Role in this project:
Front-end Developer
Front-end DeveloperContributions:9 commits, 2 PRs, 1 comment in 4 days
Contributions summary:Johannes primarily focused on improving the website's user interface and responsiveness. Their commits addressed issues with padding and margins on mobile devices, ensuring a better viewing experience across different screen sizes. They also implemented line breaks to prevent content overflow. Additionally, the user compiled and updated the website's CSS.
phpslim-frameworkslimwebsite-framework
joppuyo/disable-media-pages
Sep 2020 - Dec 2022
WordPress plugin to disable "attachment" pages automatically created for WordPress media
Contributions:2 releases, 214 commits, 13 PRs in 2 years 3 months
attachmentwordpressdisablewordpress-mediawordpress-plugin
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