Czerniatynski played 31 games, scoring 7 goals, for Belgium. He was also in the Belgian team for the 1982, scoring one goal, and 1994 World Cups as well as for the Euro 1984 but he did not play a game in that tournament.
On 27 April 2009 K.S.K. Beveren officials sacked Czerniatynski as coach. A replacement has not been announced yet. On 6 June 2010, it was announced that Czerniatynski would become the new head coach of Olympic Charleroi.