Jenkins X is a CI/CD platform on top of Kubernetes. I started using it while it was still a young project, in september 2018.
I made various contributions to different components of this open-source project:
I also wrote an asdf plugin for Jenkins X: asdf-jx.
But contributing is not limited to code. I also wrote blog posts and gave various talks about Jenkins X, and our experience using it at Dailymotion.
Project link: https://jenkins-x.io/