Stefan joined the youth squad at Melbourne Victory - the club he was a longtime supporter of - ahead of their successful 2015 National Premier Leagues Victoria 2 season.
In the following 2015-16 A-League season he started in 3 senior matches for Victory, receiving wide praise for his Man of the Match performance against Brisbane Roar in his 2016 debut, which included a nutmeg on Thomas Broich.

In June 2016 Victory announced that he had signed a two-year senior contract with the club.

On 15 May 2018, Nigro was released by Melbourne Victory along with three of his teammates.

On 19 July 2018, Brisbane Roar announced Nigro had signed for the club  He made his debut as a late substitute in a 2-0 win against Melbourne City FC.

At the end of the 2018/19 season.
Nigro was released by Brisbane Roar.

Nigro is currently trialing overseas to find a new club.
Stefan joined the youth squad at Melbourne Victory - the club he was a longtime supporter of - ahead of their successful 2015 National Premier Leagues Victoria 2 season. In the following 2015-16 A-League season he started in 3 senior matches for Victory, receiving wide praise for his Man of the Match performance against Brisbane Roar in his 2016 debut, which included a nutmeg on Thomas Broich.
In June 2016 Victory announced that he had signed a two-year senior contract with the club.
On 15 May 2018, Nigro was released by Melbourne Victory along with three of his teammates.
On 19 July 2018, Brisbane Roar announced Nigro had signed for the club  He made his debut as a late substitute in a 2-0 win against Melbourne City FC.
At the end of the 2018/19 season. Nigro was released by Brisbane Roar.
Nigro is currently trialing overseas to find a new club.
Stefan Nigro