I have a finance background. I have developed a company that looks at marketing dollars as investments and finds ways to get the highest NPV projects. I also look at ROI.
Some of the methods employed are SEO on the search engines, or search engine optimization. I also use google adwords which is a auction house for keywords. All of these methods are highly mathematically linked and can be expressed in algorithms that can help me make business choices. At times I need a mathematician to run a few numbers by or develop an algorithm themself.
Statistical analysis is a plus and financial analysis is another plus. Also knowledge of SEO, Adwords, and how markets works is another plus.
Best of luck to all who apply.