Companies That Hire Linguists

The Linguist List is a good place to start.  These are primarily academic positions, but you will find many job postings for business positions.

The College of William and Mary has a page of links to companies that routinely hire linguists.

 

Some other resources:

Center for Applied Linguistics (CAL)

Educational Testing Service (ETS)

U.S. Government agencies hire plenty of linguists:

The FBI

The CIA

The NSA

The US. Department of State