 Known for his devastating sprint finish, Markiewicz won his first national champion 1993.Initially representing in the K-4 event, he won two medals in the K-4 events at the ICF Canoe Sprint World Championships with silvers in 1993 (K-4 10000 m) and 1994 (K-4 1000 m).Markiewicz's personality better suited him to the individual K-1 events where he won the K-1 200 m and K-1 500 m events at the 1995

As reigning world champion, he went to the 1996 Games as favorite in the K-1 500 m event, but did not live up to expectations.