In the book "Careers for Number Crunchers and Other Quantitative Types" (VGM Career Books) , Rebecca Burnett explores various careers that require a certain aptitude in mathematics. Here is a list from the book:

Tracking of financial records- Accountants
- Book keepers

Managing Money and Cash flow- Chief Finance Officer (CFO)
- Office Manager
- Bank Teller

Guiding Investments- Mortgage Officer
- Financial and Securities sales representative

Buying in the workplace

- Purchasing Manager

Marketing and Selling in the Workplace

- Sales Service Representative
- Insurance agent
- Marketing

Quantitative Thinking Careers

- Engineers
- Computer System analysts
- Calculating Risks and Probabilities
- Actuaries
- Operation Research Analyst
- Statistician

Research in Natural Sciences- Biological scientist
- Meteorologist
- Physicist
- Mathematician

Education- Teacher

The book also lists some real life examples of the responsibilities in each career. For instance, for an actuarial analyst such as Brian, he uses computers to do mathematical analysis on databases to help him make recommendations about raising and lower insurance rates and changing policy coverages for insurance companies.

For an operations research analyst, one must apply quantitative thinking to help refine and solve work flow problems in a company. For example, an analyst in a manufacturing facility might deal with modifying production lines for new products, while an analyst employed by a hospital might monitor the use of pharmaceutical and laboratory services. They also also employed by airlines to help build a system for scheduling airline staff.

A good book to read for those who are interested in a career that deals with numbers.