With over 30 years programming experience in various environments, I can adapt myself to pretty much any task. That said, most recently, I have been concentrating on PHP in a LAMP (Linux, Apache, Mysql, Php) environment so that is my current preference but can be very flexible.
As my family business is based around Opencart, phpList and Wordpress, I am very familiar with these platforms. Indeed, I regularly contribute to the Opencart and phpList community forums, I also contribute occasionally on Github to these and other projects.
I also create totally bespoke websites using Xara software when a true WYSIWYG website is required without the hassle of maintenance of something like Wordpress.
I have developed many modifications for Opencart using the vqmod system (and have even extended the vqmod system myself) which is a system which allows modifications without overwriting the core system files. Wherever possible, I will implement my work using a non-destructive method such as this.