Frankel got his start as a playwright, writing a number of plays including Create Fate, The Fearless, and Truth and Reconciliation, which won the Williamstown Theatre Festival's 2006 Weissberger Playwriting Award.
He joined the crew of Friday Night Lights as a writer for the series fourth season in 2009.
He was nominated for the Writers Guild of America (WGA) Award for Best Drama Series at the February 2010 ceremony for his work on the fourth season.
[3] In 2011, Frankel joined the first season staff of the Showtime dramedy Shameless, as executive story editor and writer.
Subsequent projects included episodes of Animal Kingdom, Get Shorty and Sorry for Your Loss.