A link to your github (or similar) username has a value, it will set you apart from others. What I'm looking for in your issues or PRs for example would be the

A link to your github (or similar) username has a value, it will set you apart from others. What I'm looking for in your issues or PRs for example would be the written communication, not everybody can write good readable bug reports, and if the contribution guidelines of the project were followed which shows that you read the documentation before contributing. As negative example: I read a CV where somebody linked four github pull requests. Two of them were closed unmerged by the project owner, one even had a remark that the code in question was copied from another website (which can get open source projects in trouble license-wise). I can't explain why the person willingly linked to bad examples of their work.