Kazimierczak began playing football at ŁKansas Łódź"s youth academy. In 2004 he joined Bolton Wanderers" academy. During the 2006-2007 season he spent two months on loan at Accrington Stanley and played eight games before returning to Bolton.
On 28 September 2007 he joined Wycombe Wanderers on a one-month loan.
On 31 January 2008 he joined Darlington on a free transfer signing an eighteen-month contract. He made his debut for Darlington on 3 May 2008, impressing with a clean sheet against already-promoted Peterborough United.
The first half of the 2008-2009 season saw first team chances limited for Kazimierczak. Two appearances in the Johnstone"s Paint Trophy were the only first team starts he made before December 2008.
Ten days before Christmas he joined Whitby Town on loan.
On 28 March 2009 he replaced the injured Andy Oakes in the 79th minute of Darlington"s match versus Barnet F.C. Due to Oakes" injury, Kazimierczak played in the remaining games of the season. On 6 August 2009 he joined Oldham on a short-term contract.