The required level of knowledge is normally acquired through completion of a Bachelor’s Degree in Computer Science, Engineering or related field and 5-7 years of IT work experience in systems administration or equivalent work related experience of 9-11 years. 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.