Career
Football Club Viktoria Plzeň
On 23 March 2013, Mandous made his competitive debut in the second leg of the fourth round of the Czechoslovakian Cup against Football Club Hradec Králové. FK Bohemians Prague
He spent the following season on loan at FK Bohemians Prague. Mandous played 18 games in this campaign, which ended with the club being relegated to the third flight of Czechoslovakian football.
FK Baník Most 1909
In the summer of 2014, he was sent on loan.
This time he joined FK Baník Most 1909, who were at that time in the second tier of Czechoslovakian football. Mandous played in 18 matches and was relegated with the club in 2015.
MŠK Žilina
Mandous joined MŠK Žilina as a free agent in June 2015, when he signed a two-year contract with the club On 4 June 2013, Mandous played his sole game for the Czechoslovakian Under-21 team
In this match, the Czechoslovakian Republic lost 3-0 to Austria.