You will assist more senior officers or department managers in handling complex loans and serve as a resource to less experienced loan officers in the areas of marketing, new business development, and loan analysis and servicing and offer functional guidance. BOK Financial, Headquartered in Tulsa, Oklahoma, BOK Financial Corporation (NASDAQ: BOKF) is a top U.S.-based financial services holding company with operations in Oklahoma, Texas, Arizona, Arkansas, Colorado, Kansas, Missouri, Tennessee and New Mexico.