[kyllo]

You say you have experience writing high quality code, what frameworks and tools did you use in your code projects? It is likely that a lot of those frameworks you used and libraries you imported for your project are themselves open source projects in need of contributors, and you have experience using them, so you would be a good candidate to contribute to them as well.

For example, since I write Rails and Django apps, the first place I'd look to contribute would be on a popular open source plugin/gem/app for Rails or Django that I use in my projects.