HI!
Also, if you don't want to do something related to web development, there are plenty of things you could do. The Game Engine is written in C++ but the AI and game files are written in .xml and JavaScript, and being a web developer, you might be familiar with that. You can find open tickets here: https://trac.wildfiregames.com/report/1 to see if you can implement a feature or squash some bugs!
Or if you want something less technical you could contribute to the Encylopedia project: