Career
Piekarski moved to Brazil with fellow countryman Krzysztof Nowak in 1996 to play for Atlético Paranaense. After one year, he joined Flamengo where he stayed for five months, also playing for Mogi Mirim before returning to Europe. He retired in 2002 after an ankle injury sustained in a match for, also suffering two cruciate ligaments injuries in his knees before.
After retirement, he worked as an agent and intermediated the transfer of Roger Guerreiro and Edson to Poland.
In 2003, he was charged with bigamy after marrying a second wife before he was legally divorced from former miss Brazil Kelley Vieira, who he met when playing in the South American country.