I think first you have to answer the following question:
Do you wish to continue doing some kind of algebraic geometry or are you willing to adapt?
If you are willing to adapt, then several choices open up:
- Search out which jobs might interest you (ok, this question on MO is a start)
- Learn at least some of the skills needed to get those jobs (e.g., an additional degree or qualification)
- Become a consultant --- easier said than done!
If you are unwilling to adapt, or wish to only partially adapt, then:
- Maybe do some algebraic statistics --- you'll profitably use your AG skills there
- Some research lab might be interested
- Do a postdoc in a related yet different enough field to give you wider perspective
- Take a month off to discover yourself, and figure out what is it that you really want? The benefit of asking, and perchance answering this last question will be greater clarity, and confidence. Disillusionment might evoke a cynical response, but really, in the long-run, you should answer this question to yourself.
I wish you luck and above all clarity
