He currently serves on the board of directors for The Partnership for Economic Innovation, Valley of the Sun United Way and Visit Phoenix.

Giuliano began his political career as a city council member, elected in May 1990, and was appointed vice-mayor of Tempe, Arizona for 1992–94.

[2] After he first came out as gay in August 1996, political opponents tried to initiate a recall election to remove him from office, but that effort failed.

Following a controversy over city funds being directed to the Boy Scouts of America in 2000, a successful recall effort proceeded to the ballot.

[9] Upon retiring from elected office in 2004 and a 24-year career at Arizona State University in 2005, where he served as director of federal relations among other positions, Giuliano received praise from Senator John McCain and then-Governor Janet Napolitano.

During his tenure the GLAAD Media Awards were first broadcast on the BRAVO Network, reaching over 80 million homes with LGBT affirming messages.

[13] While he was mayor in 2003, Tempe was named an "All American-City," an award honoring local governments demonstrating success in problem solving.