Denienne Steele was born in Jamaica and raised in Queens, New York. She moved to Atlanta, Georgia in 2002 to attend Spelman College. Denienne graduated from Spelman College in 2006 with a major in Political Science. After attending Spelman College, she attended Georgia State University College of Law and received her Juris Doctorate Degree in 2010.  She was sworn into the State Bar of Georgia in November 2010. Immediately after law school she worked as an Admissions Counselor for Georgia State University College of Law. Denienne later opened her own practice handling real estate matters. She is a registered neutral in the State of Georgia for civic and domestic matters and has served on as an Arbitrator for the Georgia Office of the Attorney General New Motor Vehicle Arbitration Panel. 

In April of 2015, Denienne became an Assistant Solicitor-General in DeKalb County working in the Diversion Unit. Her duties in the unit included overseeing several of their diversion court programs and she was the prosecutor for the Misdemeanor Mental Health Court. In 2022, she was selected as Attorney of the year. 

She is also an adjunct professor at John Marshall Law School where she teaches Mediation and Alternative Dispute Resolution.

In her spare time, Denienne has served on the executive board for the National Black Prosecutors Association and the Greater Atlanta Black Prosecutors Association a member of Junior League Dekalb, and a mentor and steering committee member for the Spelman College’s Sister2Sister Program.