On television, Hahn starred alongside Hank Azaria in the short-lived NBC comedy series "Free Agents," a 2011 remake of the British series of the same name. She had recurring roles on HBO shows "Hung" and "Girls." From 2012 to 2015, she received praise for her recurring role on the NBC comedy series "Parks and Recreation" as Jennifer Barkley, the campaign manager of Leslie Knope's (Amy Poehler) opponent Bobby Newport (Paul Rudd). (She had previously costarred with Rudd in "Our Idiot Brother", "How Do You Know," and "Wanderlust".)