After winning an Offaly MHC title in 2019, he later joined the club's senior team.
[1] Mitchell first appeared on the inter-county scene with Offaly during a two-year tenure with the minor team.
[2][3] He later spent three seasons with the under-20 team and captained them to a defeat by Cork in the 2023 All-Ireland under-20 final.
[4] By that stage, Mitchell had already appeared with the senior team after making his debut in the 2023 National League.
[5] He later lined out when Offaly were beaten by Carlow in the 2023 Joe McDonagh Cup final.