I've been working with WordPress for over 4 years on a daily basis. I'm creating custom themes, developing professional plugins, work with existing well-known plugins and themes as well as doing anything the client wants. If you need some WordPress work done or an advice, you can talk with me!
Besides WordPress, Joomla is one of the CMS platforms I'm using the most. I like the fact that it's modular, keeps things organised and despite WordPress, it somehow makes you write object-oriented code.