Trainer and Consultant with focus on Angular. Google Developer Expert (GDE) who writes for O’Reilly, the German Java Magazine, windows.developer and Heise. Regularly speaks at conferences.
PHP Development Best Practices & Application
Web Development Web Development & more
Web Architecture Concepts & Environments
Performance & Security All about Performance & Security
Agile & DevOps Agile & DevOps methodologies
Testing & Quality All about Testing & Quality