Hanrahan has hosted radio programs for the Irish national broadcaster RTÉ since 1991. Hanrahan is an assistant lecturer at the Conservatory of Music and Drama at Dublin Institute of Technology where he works in the Traditional Music programme. He achieved a 1st Class Honours master's degree (MMus Hons) and was also awarded the DIT Gold medal for Academic Achievement in 2012. Currently he hosts Céilí House, a radio program on traditional Irish music aired weekly in Ireland on RTÉ Radio 1. For the last five years Kieran Hanrahan has been the Artistic Director of the Temple Bar TradFest in Dublin, Ireland.