You might find this an interesting start: https://opensource.com/article/20/5/adoptoposs
and subsequently: https://adoptoposs.org/

Hi @sunndeath, since you mentioned ‘video and streaming services’ in the first place, you may like Membrane. What you must know is that’s a quite specific project, and while it can help improve your Elixir skills, the media streaming itself is the biggest challenge there - not the language nor ecosystem. That also means the entry-level is slightly bigger than usual, especially if you don’t have any media experience. Also, we use C from time to time, mainly to integrate with other libraries. However, if you decided to contribute, we’d be glad to provide some - hopefully - interesting tasks and share our media knowledge.

codetriage.com might be a good place to explore projects and to start working on them.
You can subscribe to any project you like and get issues sent regularly, and filter for language (there’s currently a small bug with the language filter)