Best metasite for library jobs is viewable by regions, including good international links. The largest and most helpful professional association for those interested in careers in international educational exchange. These are some of the top graduate schools offering advanced degrees in preparation for international careers. Site also shows how to apply for career positions. The ABA's site offers an extraordinary number of links, as well as the International Legal Exchange Program.
Site has many useful links.
Also has lists of volunteer, internship and job opportunities. Search possible by country, type of work, and many other variables. Site includes organizations worldwide, not only US-based ones.