Professor Junker clerked for Justice Roger Traynor of the California Supreme Court and practiced in San Diego before joining the UW law school faculty in 1964. His research and teaching interests are chiefly in criminal law, criminal procedure, and evidence. He has participated in a number of studies of the administration of juvenile and criminal justice and was a principal draftsman of the Washington Criminal Code. He was Reporter of the Standards Relating to Juvenile Delinquency and Sanctions for the Juvenile Justice Standards Project. Professor Junker was a founder of the Seattle Public Defender Association and is currently a member of its Board of Directors. He is admitted to the bar in California.