Dana H. Billingsley joined Wilkerson & Bryan, P.C. in 2003 after serving as both a Deputy Attorney General and an Assistant Attorney General for the State of Alabama under Attorney General William H. Pryor Jr. As an Assistant Attorney General, Ms. Billingsley engaged in general civil litigation encompassing a variety of issues in state, federal, and appellate courts, practiced utility law before the Alabama Public Service Commission, and represented six administrative agencies and professional licensing boards for the State of Alabama. Before pursuing a legal career, Ms. Billingsley was employed by the State of Alabama Department of Public Health as a microbiologist for seventeen years, specializing in bacteriology.

Ms. Billingsley is an active member of Evangel Temple Assembly of God in Montgomery, Alabama, where she is active in women's and music ministries and other lay leadership.