The name of the catering company that Cappie and Evan apply to be waiters for is Party Down, also the name of a popular TV series that follows the lives of actors in California as cater waiters. The pink bow ties are another reference to the show. Aaron Hill (Beaver) appears in a season two episode of Party Down.
Jake McDorman (Evan Chambers) and Johanna Braddy (Jordan Reed) also worked together on episode 4.2, My Oldest Daughter (2014), of Shameless (2011) as Mike Pratt & Shelley respectively.