- "... actually hacking away on the code which powers DuckDuckGo" can be misleading--people might think that we're talking about DDG's infrastructure where we're only talking about instant answers.

- These two sentences sound the same: "Anyone in the world can help improve the search experience for everyone ..." and "... your contribution will help improve the search experience for users around the world."

- I would shorten "... search experience for everyone on DuckDuckGo" to "... search experience on DuckDuckGo".

- "... recommending improved sources for your favorite searches" can be misleading

I would recommend, but it's your choice if you want to follow it:
"Anyone in the world can help improve the search experience on DuckDuckGo. Whether you can code or not, there are many ways for you to contribute. You can start by suggesting new instant answers to the community, recommending better data sources, or by actually hacking away on your own instant answer."

What do you think? :)