Proksch had a recurring role on the television series The Office as Nate, Dwight Schrute's lackey and the office handyman. He appeared in 19 episodes over the show's final three seasons. In March 2013, Proksch starred in the NBC television pilot "Holding Patterns.". He also voiced the character Johnnie in the Adventure Time episode "Bad Timing." In March 2014, Proksch appeared in an episode of Portlandia as Carrie Brownstein's love interest. As of 2015, he currently appears as Pryce on Better Call Saul. In 2015, Proksch appeared in Season 3, Episode 1 of Drunk History in which he told the story of the Bone Wars.
