Following his graduation from North Carolina State, Amato spent two years as an assistant coach at his high schoolalma mater, Easton High School.
Assistant at NC State
In 1971, Amato began a nine-year stint as an assistant coach with North Carolina State, working under Al Michaels, Lou Holtz, and Bo Rein.
Arizona and Florida State
He then spent two seasons at the University of Arizona, where he served as the linebackers coach. He then joined Florida State University, where he spent 18 years in various defensive football coaching capacities, including that of assistant head coach for 14 years. At Florida State, he was defensive line coach for 14 years and spent four seasons as linebacker coach.
ACC championships
Amato has been a part of 11 ACC championships, one as a player at North Carolina State, two as an assistant coach for North Carolina State, and eight consecutive seasons at Florida State.
In 2002, Amato was elected to the American Football Coaches AssociationBoard of Trustees. Amato accumulated an overall record of 49–37, including a record of 34–17 during the four-year period from 2000 through 2003 while Philip Rivers was the starting quarterback. Amato's most successful season was in 2002 when the Wolfpack defeated Notre Dame in the Gator Bowl to cap off an 11–win season in which his team finished ranked #12 in the AP poll. After Philip Rivers graduated and left for the NFL, Amato's NC State teams finished 5–6 in 2004, 7–5 in 2005, and 3–9 in 2006. On November 26 of 2006, Amato was fired by NC State athletics director Lee Fowler after a seven–game losing streak capped off the 2006 season. Noted losses include an upset by the Akron Zips, a third straight loss to the North Carolina Tar Heels, and a loss at home to the East Carolina Pirates. Highlights of the 2006 season include wins against the Boston College Eagles and the Florida State Seminoles. In a statement, Fowler acknowledged Amato's "excitement and enthusiasm." This enthusiasm fueled an $87 million renovation to Carter–Finley Stadium. Nonetheless, mediocre 2005 and 2006 seasons led to the decision "to take the program in a new direction."
Return to Florida State
In 2007, Amato returned to Florida State University as executive associate head coach and linebackers coach. In December 2009 with the retirement of Bobby Bowden, Amato was notified by new Florida State Head Coach Jimbo Fisher that he will not be retained on staff. Amato coached the 2010 Gator Bowl game and was subsequently released from the Florida State program. In December 2009, Amato was diagnosed with neck and throat cancer. After a successful six week treatment, he vowed to return to coaching in 2011.