Contribute to the community via code (you could even contribute heavily to open source projects, not even maintain I'd guess), follow the community and dev rules, and the badge will magically appear. Maybe code isn't your thing anymore or you want to focus on Gentoo, no problemo, be available to people, be helpful and nice, write guides and how to's, and you could be an advisor. No coding, no java, no sdk .... you get it
Remember, It's not a sprint it's a marathoncheers and welcome