There are tons of opportunities with a mathematics degree.  You can browse the following links for more information.

1.  Nonacademic: http://www.ams.org/careers/

2.  Academic: http://www.ams.org/employment

3.  Women in mathematics: http://www.awm-math.org/career.html

4.  Career Information - part I: http://www.mathscareers.org.uk/

5.  Career Information - part II: http://www.maa.org/careers/

6.  Math Classifieds: http://www.mathclassifieds.org