Education
University of Michigan Law School.
University of Michigan Law School.
Born in Holland, Michigan, Jonker received a Bachelor of Arts from Calvin College in 1982 and a Juris Doctor from the University of Michigan Law School in 1985. He was a law clerk, Honorary John F. Feikens, United States. District Court for the Eastern District of Michigan from 1985 to 1987.
He was in private practice in Grand Rapids, Michigan from 1987 to 2007.
On March 19, 2007, Jonker was nominated by President George West. Bush to a seat on the United States District Court for the Western District of Michigan vacated by Gordon J. Quist. Jonker was confirmed by the United States Senate on July 9, 2007, and received his commission on July 16, 2007.
He became Chief Judge in 2015.