Judge Marco A. Roldan was appointed circuit judge for the 16th Judicial Circuit in 1999. Prior to his appointment, he served as drug court commissioner for the 16th Circuit. Judge Roldan received his B.S. degrees from the University of Central Missouri in criminal justice administration and Spanish. He then received his J.D. from the University of Missouri-Kansas City.

Judge Roldan is a member of The Missouri Bar Foundation, the state drug court commission, the state budget committee, the state judge transfer committee and the Supreme Court of Missouri Commission on Racial and Ethnic Fairness. He is a member of the Summit Woods Baptist Church, where he serves as a deacon.