finance jobs that don't involve sales

What are some finance/banking/credit related jobs that require a bachelor’s degree, but don’t involve sales? What about a loan officer?

Lots of them. Most companies of any size have their own finance department. People there could do things ranging from accounts payable and receivable to analyst jobs that figure out opportunities to cut costs or increase revenue or budgeting. Those jobs require a degree for analyst or management jobs and most of them require no sales whatsoever. As a matter of fact, most of them don’t deal with outside clients at all.