Timo Stollenwerk is a seasoned software leader and CEO of kitconcept with 12+ years building websites and intranet solutions, specializing in Plone, Python, React, and robust test automation. As Plone Release Manager and long-standing member of several Plone foundation teams, he combines release stewardship with hands-on contributions to core projects like Products.CMFPlone and the React-based Volto front end. He’s equally comfortable across back-end and front-end domains, having improved test suites, CI pipelines, and Robot Framework automation for multiple projects including Jenkins examples and Plone add-ons. Based in Bonn, he champions open source, TDD, and continuous integration—often surfacing behind-the-scenes infrastructure improvements that keep large CMS installations stable and maintainable.
12 years of coding experience
9 years of employment as a software developer
Diplom-Ingenieur, Computer Science, Diplom-Ingenieur, Computer Science at The University of Bonn
Contributions:214 commits, 17 PRs, 204 pushes in 4 years 5 months
Contributions summary:Timo focused on automating acceptance tests for a Jenkins pipeline project. Their contributions included writing Robot Framework tests for various scenarios, such as verifying Jenkins availability and creating pipeline jobs. They also implemented UI interactions like clicking links, inputting text, and selecting radio buttons, and configured the tests to use different browsers. Furthermore, the user made adjustments for Jenkins setup, including handling security bypasses and installing required plugins.
React-based frontend for the Plone Content Management System
Role in this project:
Front-end Developer & Test Automation Engineer
Contributions:61 releases, 159 reviews, 799 commits in 5 years 7 months
Contributions summary:Timo contributed to the Plone/Volto project, a React-based frontend for the Plone CMS. The user's contributions primarily focused on improving the test suite, including the addition of robot framework test setup and best practices for login tests. Further contributions included the addition of Robot Framework tests to cover content creation and related improvements. The user appears to be familiar with front-end development, testing frameworks, and test automation.
management-systemreactvoltoplonefrontend
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Timo Stollenwerk - Geschäftsführer at kitconcept GmbH