Miller began her career as an assistant district attorney for Fulton County. After this, she became the senior in-house litigation counsel for the Metropolitan Atlanta Rapid Transit Authority. She then worked as the part owner, general manager and general counsel for a Ford Lincoln-Mercury car dealership. During this time, Miller also maintained a private legal practice. In 1989, she became a judge for the first time, serving as an administrative law judge for the State Board of Workers’ Compensation. Then in 1992 she was appointed to the position of director and judge of the Appellate Division of the State Board of Workers’ Compensation. In 1996, she was appointed to the Fulton County State Court, where she served as judge until her appointment to the Georgia Court of Appeals in 1999.[3]
Service on Georgia Court of Appeals
She was appointed to the Georgia Court of Appeals on July 12, 1999 by Governor Roy Barnes and became the 65th Judge on the court. She is the first African-American woman to serve on the Court as well as the first African-American woman to serve as the Court's Chief Judge.[3] Miller was elected to the court in 2000 and re-elected in 2006, 2012, and 2018. She served as chief judge from January 1, 2009, to January 1, 2011. She was sworn in a Chief Judge on January 6, 2009.[5]