Mendheim earned his B.A. from Auburn University. He received a J.D. from Samford University's Cumberland School of Law in 1993. Mendheim worked in a general practice firm and as an assistant district attorney for the 20th Judicial Circuit before becoming a judge. He was a district judge in Houston County from 2001 to 2009. Mendheim was elected to Alabama's 20th Judicial Circuit in 2008 and served there until Ivey appointed him to the state supreme court in January 2018. He lost in the primary runoff in July, and in December 2018, Ivey appointed him to another vacancy. Mendheim won election to a full term in 2020.
