Got some C++ knowledge? Contribute to a well-known and widely used open source project – it looks great on your CV! Here's how to quickly set up your development environment, so that you can modify the #LibreOffice source code: https://blog.documentfoundation.org/blog/2019/06/03/start-developing-libreoffice-registering-with-git-and-gerrit-and-local-settings/