As a hiring manager of developers:
- If a candidate puts a link to public source code anywhere in their Resume, it's the first thing I read.
- I see a lot of GitHub, of course.
- I consider GitLab, Codeberg, or even BitBucket to be a mild bonus. Hosting code history somewhere unusual implies some awareness of Git's portability.
I'm personally still on GitHub, but planning to migrate my portfolio to somewhere with an open source back end over the next few years.