He is the manager of ?. Chojnacki played for ŁKansas Łódź in the Polish Ekstraklasa, appearing in more than 450 league matches. He had a spell in the Greek Super League with Ethnikos Piraeus F.C.
Chojnacki played for Poland at the 1979 Fédération internationale de football association World Youth Championship in Japan.
He played 4 international matches for his country.