He started his career at hometown club Lille OSC, going on to play for AJ Auxerre, Nantes, with whom he won the Coupe de France twice, and RC Lens.

Born in Lille,[1] Sibierski began his career at hometown club Lille OSC, where he moved up the ranks and played for four complete seasons in the first team before playing for AJ Auxerre and FC Nantes, where he won the 2000 French Cup, in the final of which Sibierski scored both of Nantes' goals.

[4] He was a regular substitute for the team, having started only eighteen of the thirty-three games he participated in, during an all important first season in which he scored seven goals.

Newcastle United signed Sibierski on 31 August 2006 on a one-year contract, just two hours and twenty minutes before the close of the transfer window.

His goal scoring form at the start of the season proved many doubters wrong, as Sibierski went on to be a key European figure.

In Europe, Sibierski made 7 appearances and scored 4 essential goals against Levadia Tallinn, Fenerbahçe, Celta Vigo and Zulte-Waregem respectively.

However, on 12 January 2008, Sibierski scored a crucial winner within seconds of coming off the bench against Derby County with a low drive into the bottom left corner of the net from 25 yards out.

[12] He is currently the Sporting Director of Ligue 2 club ESTAC Troyes part of the City Football Group galaxy.

[citation needed] Following the unfortunate passing of his 18-year-old elder daughter Sibylle on 1 February 2010, a charity "Fonds de Dotation Sibylle Sibierski" has been formed in her name with the support of football legends such as Real Madrid manager Zinedine Zidane, former Arsenal captain and Manchester City midfielder Patrick Vieira, Chelsea striker Didier Drogba and Kevin Keegan of England and Newcastle and more.