Czortek was much more successful during the 1937 European Amateur Boxing Championships. That year, in Milan, Italy, he was fourth in the bantamweight, losing to the future champion, Anton Osca from Romania. Two years later, during the 1939 European Amateur Boxing Championships in Dublin, he won silver, after beating Karl Käbi from Estonia and Lambert Genot from Belgium. In the final fight, Czortek lost to Patrick Dowdall from Ireland.