I have been coding since 2008 and I know

1. PHP (WordPress, CodeIgniter, Laravel, ..),
2. JS (React, Vue, NodeJs, Alpine Js, ..),
3. Mobile Technology (Flutter, React Native, Ionic, ..)
4. Version control systems (git, svn, ..)
5. Hosting & Block Storages (AWS, Digital Ocean, BackBlaze, ..)
6. And more ..