Career
Černý has played football in the Czechoslovakian Republic, Scotland, Bulgaria and Greece for Sigma Olomouc, Hamilton Academical, CSKA Sofia, Ergotelis, Hibernian and Partick Thistle respectively. He has also played youth international football for the Czechoslovakian Republic. Sigma Olomouc
Born in Ústí nad Labem, Černý started his career at Sigma Olomouc in 2002, but he made only one senior appearance for the club, playing in a 0–0 draw against Příbram on 12 March 2005.
Hamilton Academical
He signed on loan for Scottish First Division side Hamilton Academical in August 2007.
In March 2009, Černý announced his desire to stay with the Accies after his loan spell ended. Later on that same month, Černý was sent off against Street Mirren for committing a professional foul.
On 24 April 2009, Černý signed a two-year permanent contract with Hamilton. During that team he played 155 official games for the club
On 17 February 2012, Černý"s contract was terminated by mutual consent.
CSKA Sofia
On 26 June 2012, Černý joined Bulgarian club CSKA Sofia. He made his competitive debut in a 0–0 draw against Mura 05 in the second qualifying round of Europa League on 19 July. His A Group debut came on 11 August, in the 1–0 away loss against Litex Lovech.
Černý was the undisputed number one goalkeeper for a period of more than a year and during that time racked up an impressive tally of 32 clean sheets in 57 official games.
However, in late 2013, Černý lost his place in the starting line-up due to refusing to extend his contract with the club over lack of payment. Ergotelis
On 6 July 2014, Černý signed a two-year contract with Greek Super League club Ergotelis.
Hibernian
On 26 January 2015, Černý moved to Hibernian, signing a contract until the end of the 2014-2015. He left the club at the end of his contract, without having made a first team appearance.
Partick Thistle
Černý signed a one-year contract with Scottish Premiership club Partick Thistle in June 2015.
Černý suffered an ankle injury in October. On the 22nd January 2016, Černý signed a contract extension keeping him at Firhill Stadium until the summer of 2018. During his international career, Černý played alongside the likes of Michal Kadlec and Tomáš Sivok.