Jo Hasenau
CTO at Cybercraft GmbH
Hannover-Braunschweig-Göttingen-Wolfsburg Region Germany
Summary
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SeniorJo Hasenau is a seasoned software leader and CTO with 15 years of experience driving product-focused engineering at Cybercraft and previously at InnoCoding. Based in the Hannover–Braunschweig–Göttingen–Wolfsburg region, he blends hands-on backend development with strategic technical leadership, shipping reliable enterprise systems. A long-time contributor to the TYPO3 CMS core, Jo has improved page tree behavior, flexform integration and TypoScript handling—demonstrating attention to both UX-facing content management quirks and core performance. He is comfortable moving between code-level refactors and executive decision-making, and often surfaces pragmatic engineering fixes that reduce maintenance overhead. Outside of leadership, his practical contributions reveal a preference for incremental, high-impact improvements over flashy rewrites.
15 years of coding experience
3 years of employment as a software developer
Stackoverflow
2,569reputation
1.5mreached
186answers
0questions
Github Skills (11)
cms10
php10
debug10
typo310
back-end-development10
typoscript9
content-management9
content-management-system9
fluid6
jquery6
backend6
Programming languages (6)
Github contributions (5)
TYPO3/typo3
Mar 2011 - May 2020
The TYPO3 Core - Enterprise Content Management System. Synchronized mirror of https://review.typo3.org/q/project:Packages/TYPO3.CMS
Role in this project:
Back-end Developer
Back-end DeveloperContributions:38 commits in 9 years 4 months
Contributions summary:Jo primarily contributed to the TYPO3 CMS core, focusing on bug fixes and feature enhancements. Their work included modifications to the list module, addressing layout issues and content element movement problems. They also worked on improving the page tree functionality and flexform integration. Furthermore, they updated the TYPO3 core by adding stdWrap to TypoScript and refactoring code to use more efficient comparison operators.
cmsmanagement-systemphpsynchronizedtypo3-cms
CodersCare/l10nmgr
Dec 2022 - Apr 2025
Power up your TYPO3 translations with L10nmgr! Get exclusive early access to v13! L10nmgr is the go-to extension for professional TYPO3 translations, enabling efficient bulk translation exports and imports. L10nmgr 13 makes multilingual content management even more powerful and flexible! Support L10nmgr now and unlock v13 today! Sponsor us here:
Contributions:12 PRs, 21 pushes, 2 branches in 2 years 3 months
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