Head hunters/job search sites for Mathematicians? What are good job search sites, head hunter/recruiting agencies for mathematicians looking for industry jobs? 
If this question is not appropriate for the math stack exchange, please feel free to redirect me.
 A: I think you are going to find a mixed bag of things on this topic as it is rather broad from school teachers, to professors to researchers to applied math jobs and the like.=, up to and including engineering.
For example, Top Paying Math Careers.
Here is a sampling for some ideas and sites to look at for conferences and contacts regarding math, head hunters, sites, et. al..


*

*MAA Math Classifieds

*indeed

*DW Simpson - Actuaries

*National Financial Mathematics Career Fair

*How to get a job - PH.D's

*Financial Mathematics Job Resources

*Math Teacher Jobs

*Math Employers

*Simply Hired - Applied Math
More specialized fields are also possible in research and the financial sector and the schools big in those areas can provide further support and resources in those cases.
A: Careers in Mathematics would be a page from the University of Waterloo in Canada that has a Faculty of Mathematics that covers various disciplines including Actuarial Science, Operations Research, and Computer Science in addition to conventional branches of Mathematics like Pure Math, Applied Math, Accounting and Statistics noting various career options as there can be more than a few things that may fall under the heading of a Mathematician.  This isn't exactly what was asked though it is pretty close to what one could do with a Math degree which I could see as a way to know who are Mathematicians in the world.
