Sheehan was born in Dublin in 1998.
He signed his first contract with Leinster in 2020, hitting the Pro14 scene with a bang when he scored a brace of tries in his debut game against Zebre.
In November 2021, the hooker made his international debut for Ireland in their 60-5 thrashing of Japan at the Aviva Stadium.
|2019 - present|
|2021 - present|
|2022 - present|
|2018 - 2019|