Judge Sunderman was born in Findlay, Ohio where he graduated from Findlay High School in 1968. He moved to Delaware County, Ohio in 1976 following graduation from law school. He holds a bachelor degree in Sociology from the Ohio State University and a Law degree from the University of Toledo. Judge Sunderman and his wife have two children and seven grandchildren.
Judge Sunderman practiced law in Delaware County for twenty-five (25) years prior to being elected to Judge of the Delaware Municipal Court in November 2001. He served as a Delaware County Assistant Prosecuting Attorney in 1977 and 1978. He was engaged in the private practice of law from 1978 through 2001.
Judge Sunderman was appointed by former Supreme Court Justice Thomas Moyer to serve on the Ohio Supreme Court Commission on Professionalism. He served 6 years on the commission including 2 years as chairman.
Judge Sunderman was appointed to and served on the Ohio Supreme Court Task Force on the Code of Judicial Conduct in 2007- 2008.
Judge Sunderman is a trustee of the Ohio Association of Municipal and County Court Judges. He is currently co-chair of the Delaware County Opiate Task Force.