He is of Italian heritage through his paternal grandfather, Roy, who was born and raised in Sinopoli, Calabria before moving to Australia at the age of 18.

[21] Alvaro was part of The Parramatta side which made the finals for the first time in eight years by finishing fourth at the end of the regular season.

[27][28] In Round 22 against the Gold Coast, Alvaro scored his first try in nearly two years as Parramatta won the match 36-12 at Cbus Super Stadium.

[30] Midway through the 2020 NRL season, Alvaro was loaned out to the struggling New Zealand Warriors side after making only one appearance for Parramatta.

Alvaro made his debut for the New Zealand Warriors in their 26-20 victory over the Wests Tigers at the Sydney Cricket Ground in round 12 of the 2020 NRL season.

[33] On 5 July 2021, Alvaro was fined $15,000 by the NRL and suspended for one game after breaching the game's Covid-19 biosecurity protocols when he attended a party along with 12 other St. George Illawarra players at Paul Vaughan's property[34] Alvaro played a total of 19 matches for St. George Illawarra in the 2021 NRL season as the club finished 11th on the table and missed out on the finals.

[36] Alvaro played a total of 15 matches for Toulouse in the 2022 Super League season as the club were relegated back to the RFL Championship after finishing bottom of the table.