Reach out to the folks using the open source software you've written or contribute to. To these folks, you are already vetted -- they rely on your code and they

Reach out to the folks using the open source software you've written or contribute to. To these folks, you are already vetted -- they rely on your code and they "know" you from the community around the projects. Different projects have different norms around job seeking, so this might take the form of reaching out 1:1 to other contributors or users you have interacted with, or it might take the form of "Hey, I'm looking for a new job..." to the mailing list for the project. Do understand the norms for the projects though, as sending a blanket "I'm looking for a new gig" to some places will lead to being ostracized, whereas for others it will lead to flurry of folks reaching out. If in doubt, reach out directly.