Inter Milan Pirola joined the youth academy of
Inter Milan in 2015. Pirola made his senior debut with Inter in a 4–0
Serie A win over
SPAL on 16 July 2020.
Loan to Monza On 5 October 2020, Pirola moved to newly promoted
Serie B side
Monza on a one-year loan. He made his debut on 27 October 2020, in a
Coppa Italia third round match against
Pordenone; Pirola played his first Serie B match on 22 December, On 14 July 2021, Pirola re-joined Monza on another one-year loan, with an option to buy for Monza and a counter-option for Inter.
Salernitana Pirola joined
Salernitana in the Serie A on a one-year loan, with an option to buy and counter option in favour of Inter. At the end of the season Salernitana triggered the option to buy, making the transfer permanent.
Olympiacos Pirola joined
Olympiacos in the Greek Super League on a three-year contract for a €3 million fee. ==International career==