At this point, I'm willing to take a paycut for more fulfilling place and a non-profit/OSS seem good places as only people aligned with mission would be likely working there. OSS has more odds of being higher quality and technical. But I have no idea how to break in.
I did computer support for one of them. The projects were great and I almost moved "up the hill" to a national lab.
I have zero knowledge of openings, but there is a giant need of support to organizations fighting the destruction of such labs and of democracy itself. If I knew a suitable opening, I'd work there for free (I'm retired and looking out only for younger people at this point.)