Jens Horstmann
CTO & Co-Founder at Widgetbook
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolJens Horstmann is a CTO and co-founder with a decade of experience building developer-focused products, currently leading Widgetbook to streamline Flutter front-end collaboration across mobile, web, desktop and IoT. He combines hands-on front-end engineering with product leadership—contributing to Widgetbook’s open-source core by improving navigation, UI panels, and routing to enhance developer experience. Based in Berlin, Jens blends startup grit from accelerator participation with engineering roots from dSPACE and a Master in Computer Engineering from Paderborn. He’s particularly attuned to bridging design and development workflows, turning widget catalogs into shared, reviewable assets that speed cross-functional feedback.
10 years of coding experience
1 year of employment as a software developer
Master of Computer Engineering, Master of Computer Engineering at Paderborn University
Github Skills (5)
flutter-game10
dart10
flutter-apps10
flutter10
ui-design9
Programming languages (9)
Github contributions (5)
widgetbook/widgetbook
Oct 2021 - Jan 2023
Widgetbook is the custom widget library and collaboration platform for Flutter frontend teams.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:7 releases, 330 reviews, 442 commits in 1 year 3 months
Contributions summary:Jens's commits focused on enhancing the Widgetbook platform by integrating Go Router for navigation. These changes involved modifying the core Widgetbook file, creating a router file to manage navigation, and updating the workbench provider to handle routing parameters. The user also made UI improvements, including adding a property panel and incorporating resizing functionality for panels, which improved the user experience. Furthermore, they addressed bugs in the property panel and split view, and refactored the code to use container related styling.
widgetdartcollaborationcollaboration-platformstorybook
widgetbook/groceries-demo
Jul 2023 - Mar 2025
A demo application for Widgetbook and how to implement a design system from Figma.
Contributions:6 reviews, 22 PRs, 48 pushes in 1 year 8 months
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