Janne Koivistoinen
Designer at Janne.me
Finland
Summary
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RockstarJanne Koivistoinen is a Finland-based designer and front-end developer with over a decade of experience crafting digital products through his studio Janne.me. He blends visual design sensibility with hands-on UI engineering, contributing to open-source projects like Sharetribe’s ftw-daily where he refined responsive layouts, topbar and carousel components, form elements, and subtle visual details like avatar sizes and arrowhead directions. Known for shipping pixel-conscious, responsive interfaces, he bridges design reviews and production code to deliver scalable, maintainable UI components. His work demonstrates an uncommon attention to micro-interactions and CSS-level refinements that improve both usability and long-term design consistency.
11 years of coding experience
Finnish, English, Spanish, Japanese, Indonesian
Github Skills (5)
css10
responsive-design10
front-end-development10
ui-design10
react10
Programming languages (3)
Github contributions (5)
sharetribe/ftw-daily
Jun 2017 - Jan 2023
Sharetribe Flex Template for Web
Role in this project:
Front-end Developer
Front-end DeveloperContributions:5 reviews, 183 commits, 12 PRs in 5 years 8 months
Contributions summary:Janne primarily focused on front-end development, contributing extensively to the UI of the "Sharetribe Flex Template for Web." Their commits involved adding and modifying CSS styles, refining UI components such as the topbar, image carousel, and various form elements. A significant portion of the work was dedicated to ensuring responsiveness across different screen sizes and adjusting the design to align with design reviews. Additionally, the user implemented new avatar sizes and added more visual directions to the arrow head component.
templateflexsharetribe
sugarlift/sugarlift
Oct 2024 - Feb 2025
Contributions:2 PRs, 219 pushes, 3 branches in 3 months
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