He was known for playing the recurring role of blacksmith Hans Dorfler in the American historical drama television series Little House on the Prairie.

[4] Jeter appeared in the 1966 film The Sand Pebbles, in the role of Boatswain's Mate 2nd Class Farren.

[1] Jeter guest-starred in television programs, including Gunsmoke, Bonanza, Death Valley Days, The Waltons, The Mary Tyler Moore Show, Rawhide, Emergency!, The Rockford Files, Knots Landing, M*A*S*H, Land of the Giants, and The Wild Wild West.

[2] He also played the recurring role of "Smitty" in the drama television series Delvecchio, and as the blacksmith Hans Dorfler in Little House on the Prairie from 1974 to 1980.

[2] Jeter appeared in films such as F.I.S.T., The Border, Assault on Precinct 13, Hang 'Em High, Fun with Dick and Jane, The Four Deuces, Ice Station Zebra, A Change of Seasons, The Hollywood Knights, Blow Out, The Christian Licorice Store, and Fast Break.