I'm 40+ though I try not to act like it.
My most recent gig, which is my favorite job to date, is working at a small startup as "The X guy", for an X I've worked on for years and years. I suspect you can similarly specialize, if you think carefully about what you did for 10 years.
If my current gig weren't an option, I'd try for some of the DoD startups where X is applicable, or I'd try to move into consulting, as others have mentioned, or I'd open my own shop for small businesses nearby, in an unrelated field. Small time one-stop consultants in my area charge more for database admin than I do for X in my PhD field.
If my current gig weren't an option, I'd try for some of the DoD startups where X is applicable, or I'd try to move into consulting, as others have mentioned, or I'd open my own shop for small businesses nearby, in an unrelated field. Small time one-stop consultants in my area charge more for database admin than I do for X in my PhD field.