He played college basketball in the United States for the Saint Mary's Gaels before debuting in the NBL in 2012 with the Cairns Taipans.

After stints in Belgium and Greece, he joined the Perth Wildcats in 2017, going on to win two NBL championships in 2019 and 2020.

[5] In 2008, Steindl moved to the United States to play college basketball for the Saint Mary's Gaels.

An injury to Stephen Holt in February led to Steindl moving back into the starting lineup.

[9] Steindl joined the Townsville Crocodiles for the 2014–15 NBL season,[10][11] where he averaged 9.6 points in 28 games.

[14] For the 2016–17 season, Steindl joined the Leuven Bears of the Belgian Pro Basketball League.

[17][18] He later joined Greek team Panionios for the 2017–18 season,[19] but appeared in just three games before returning to Australia.

[32] On 5 July 2021, Steindl signed a two-year deal with the Tasmania JackJumpers, a new franchise entering the NBL for the first time in 2021–22.

[34] Steindl missed the first six weeks of the 2022–23 NBL season due to stress fractures in his shins.

[39] He went on to help the JackJumpers win the NBL championship with a 3–2 grand final series victory over Melbourne United.

[43][44] In 2014, Steindl played for the Mackay Meteors in the Queensland Basketball League (QBL), averaging 13.6 points in 17 games.

[45] In 2018, Steindl joined the Cockburn Cougars of the State Basketball League (SBL).