Smetana spent the first nine years of his professional career in various clubs in the first three leagues in the Czech Republic, before moving to Belgium and finally Germany from 2010 via Slovakia.
Liga club Hansa Rostock in June 2012, initially on loan from Belgian Sint-Truiden; a purchase option was also agreed.
[6] On 18 August 2020, Smetana was appointed as the head coach of FC Baník Ostrava's B-team playing in the Moravian–Silesian Football League.
[7] In February 2021 he was appointed as the head coach of Baník's A-team following the sacking of Luboš Kozel.
[8] In October 2022 Smetana was appointed as the head coach of FC Vysočina Jihlava playing in the Czech National Football League.