Fullstack Web Developer
Fullstack web developer with a passion for open source. I build modern web applications and custom CMS solutions - from clean backends and interactive frontends to CI/CD pipelines and legacy PHP modernisation. Having served as Release Manager of an international open-source project, I bring both, hands-on development experience and a broader perspective on how software ships. I care about code quality, developer experience, and building things that actually work in production.
Work Experience
SimplySmart-IT · Gochsheim, Germany
- Web application development using Laravel, Symfony, React and Joomla!
- Custom Joomla! extension development (PHP, MVC architecture)
- CMS migrations and legacy PHP modernisation
- End-to-end testing and quality assurance
- DevOps: Linux server administration, Docker containerisation, CI/CD pipelines
- Technical consulting, support and technical SEO for SME clients
Joomla! · International
- Currently active in the CMS Release Team, Joomla Enhancement Development Team and Bug Squad
Leadership Roles
- Assistant Team Leader, CMS Maintenance Team (Aug 2024 – Jan 2026) — co-responsible for stability and maintenance of the Joomla core
- Release Manager for Joomla 5.1.x (Oct 2023 – Oct 2024) — one of the world's most widely used open-source CMS platforms
- Contributed to and released the implementation of TUF (The Update Framework) — making Joomla the first PHP-based CMS with cryptographic signature verification for core updates (official announcement article)
- Drove SEO and UI/UX improvements — Schema.org structured data, routing and a significantly improved dark mode
- Championed the Welcome Tour onboarding system — drove it forward through review, testing and supporting the feature developers, laying the groundwork for full delivery in Joomla 5.2
Scholz Elektro-engineering GmbH · Schweinfurt, Germany
- IT administration: network monitoring, client-server operations, IT security, GDPR & GoBD compliance
- Developed custom software to visualise PLC control data including interface development and backup functionality
- Project lead: planning and commissioning of a wireless smoke alarm network in a multi-storey office building with PLC integration
- IT consulting & support: hardware procurement advice, software configuration, remote maintenance, website management
- Management assistance: order processing, purchasing, invoicing, staff time management
Open Source Projects & Contributions
OAuth2 Test Infrastructure · Joomla Core
Developed a reference OAuth2 plugin to isolate framework-level authentication bugs. Driving 3 merged fixes for provider compatibility (HTTP header case sensitivity, Content-Type charset) across Joomla 5.x and 6.1-dev
CI/CD Workflows & Supply-Chain Hardening
Reusable workflow configurations for GitHub Actions, Forgejo & Renovate Bot
Supply-chain hardening for Joomla CMS by pinning all Actions workflows to immutable commit SHAs
Supply-chain hardening for Joomla CMS by pinning all Actions workflows to immutable commit SHAs
Mail Template Layout · Joomla 5.2
Author of core feature: configurable HTML email layouts with branding, logo support and template overrides for all Joomla system emails
Accessible Menu Navigation · Joomla 6.0
Implemented W3C ARIA disclosure patterns and keyboard navigation for Joomla's default frontend menu module. Fixing broken hover-expand and making submenus fully keyboard-accessible
Patch Tester · joomla-extensions
Contributor to the official Joomla patch-testing extension (v5.0.0+): enables direct PR testing inside Joomla installations; modernised for Joomla 5/6 support (joomla-extensions org, 36 releases)
PR Testers CLI · joomla-projects
Author of the PHP PR Testers CLI tool (joomla-projects org): aggregates GitHub PR testing feedback by milestone and generates contributor recognition reports for the Joomla release workflow
Joomla Release Testing Framework
Contributor to the official Docker-based end-to-end testing framework for Joomla release candidates (joomla-projects) — subject of JDay DACH 2024 conference talk
Copier Templates for Joomla
Project scaffolding templates for Joomla plugins, modules & components via Copier CLI (GPL-3.0)
Conference Talks
JDay DACH 2024 · Germany
"Updates made easy – testing in advance with minimal effort to ensure everything goes smoothly" (de)
JDay USA 2026 · United States
"Debugging the Next Wave: Insides Joomla Bug Squad" (en)