I get most of work through networking. Otherwise, I've found Reddit and Facebook to be extremely helpful. Far more than LinkedIn or dedicated job boards.

How do I go about?

I introduce myself, mention relevant experience, list references. And, mind you, I'm not a dedicated opensource contributor. Hell, even my public GitHub repo is dated and not that rich. Again, my target market are not tech companies per se. I prefer being the tech guy in a non-tech company.

Mis dos centavos.

I think that to have a good opportunity to get hired for a remote role you should have a very good personal brand, your code quality and your contributions to open source projects. Some times I receive job offers from people that looks at something that I made on GitHub.

So I can say: "My tactics is to love what I do, share knowledge with others and contribute to open source projects"

The projects of yours that catch eyes of employers, are they industry relevant? I've had attempts at simple things like lexers for interpreters, stack vms, but I always get the feeling that's too esoteric.