Pantaloni has held various positions in AC Ajaccio's staff since 2001. He was briefly caretaker manager in 2004. He has been head coach of the first team since 2009, achieving promotion to Ligue 1. On 13 June 2012, he left Ajaccio after three seasons in charge. His third stint with AC Ajaccio came on November 6, 2014 following the sacking of interim coach Christian Braconni in October 2014.