DevOps, cloud architecture/engineering. Another option could be teaching IT (private) - organize lectures about your expertise, etc
DevOps doesn't really interest me. It seems to be messier than software development with all of the craziness like K8s and stuff like that nowadays.
I mean stuff like GitOps/trunk-based development, release management, feature management, monitoring, review apps (see on Gitlab), Git itself (still not universal) and so on.