Cullen joined in 2022 after working for approximately 8 years in the Sangamon County State's Attorney's Office as a prosecutor. His primary responsibilities are to assist the business with issues regarding mineral rights, estates, real estate, employment, contracts, and civil litigation.
Cullen received his B.A. from the University of Illinois Champaign-Urbana in 2010. He received his J.D. from the University of Mississippi School of Law in 2014. Cullen was admitted to the Illinois Bar and the U.S. District Court for the Central District of Illinois in 2014.