He quickly became a core team member for Avellino and played for them for 6 seasons, the last of which in Serie B.
In 1990, Amodio returned to Serie A after being transferred to Lecce, coached by the legendary Zbigniew Boniek.
In subsequent years he continued to play in Campania, first with Avellino again and then with Turris, where he finished his professional career in 2000.
Amodio served as a Director of football for Sorrento, following which he became administrator and general manager for Juve Stabia.
On 10 October 2011 he resigned from his position as manager after receiving a three-year ban from football-related activities because of his involvement in the 2011 betting scandal.