District Attorney Jonathan Liberman will join the Cumberland County prosecutorial staff next week.

Liberman has been hired as an assistant district attorney for the southern Maine county, a Cumberland County spokesman confirmed Dec. 21.

Liberman, a Republican from West Bath, has served as district attorney for Knox, Lincoln, Waldo and Sagadahoc counties since being appointed to the post in May 2017 by Republican Gov. Paul LePage. Liberman succeeded Geoffrey Rushlau, who was confirmed as a district court judge.

He was defeated on Nov. 6 as he sought election to the post. Democrat Natasha Irving, a defense attorney from Waldoboro, was elected to the top Midcoast district prosecution post.

She will be sworn into office on Jan. 1.

Liberman served as assistant district attorney, first in Knox County and then in Lincoln and Sagadahoc counties. In 2016, then-District Attorney Geoffrey Rushlau named him deputy district attorney for the four counties.

Liberman grew up in Bath and attended the University of Maine School of Law. While attending law school, he served as a student prosecutor for the Cumberland County district attorney's office beginning in 2009.