As TYPO3 CMS Developer I have experience collected through projects, I know the architecture, design patterns, best practices, and a fair share of internals both TYPO3 CMS and the extension framework. As TYPO3 CMS Developer I can implement an extension completely in a state-of-the-art way. I write clean code by following the TYPO3 Coding Guidelines (CGL), and I well versed in a wide range of topics, from the initial setup of an extension up to the point of publishing it in the TYPO3 Extension Repository (TER).