Linked here are collections of job sites created by Nick Martin and PCDN. Nick’s is categorized by “area” while PCDN’s is a menu of social change sites. Both are worth your look. And here is a site for just some “cool” jobs!
Also, not included in each is USAjobs.gov, you are looking for federal work!
Also, consider Paxity, the newest site in the peacebuilding field.
David J. Smith Consulting, LLC 