This site provides a number of job listings as well as advice
and services for recent grads. Check out the link to the mathematical
Careers Bulletin Board. You can even send your resume and apply for jobs over
the web.
A great place to start your job hunt! Check
out the article entitled "Scientific Elites and Scientific Illiterates"; it
provides an outlook of the future of the field of mathematics. This site
also has job listings.