[3] The loan was then extended and Šteinbors joined his countryman and current Latvian international Kaspars Gorkšs at Bloomfield Road.

[6] He started the season as the club's first keeper, but lost his place in the line-up in midseason, with the team struggling to show good results.

In July 2013, Šteinbors moved to the Polish Ekstraklasa, signing a two-year contract with Górnik Zabrze after a successful trial period.

[7] He made his debut for the club on 17 August 2013 in a Polish Cup match against GKS Bełchatów, playing 90 minutes and keeping a clean-sheet.

Šteinbors made his debut for the senior Latvia national team on 13 November 2015 in a 0–1 friendly loss to Northern Ireland.