|Date of birth||9 June 1981|
|Place of birth||Floriana, Malta|
|Height||5 ft 11 in (1.80 m)|
|1998||→ Dobrudzha Dobrich (loan)||3||(0)|
|2009||→ Ferencváros (loan)||2||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 13 August 2016.
‡ National team caps and goals correct as of 21 August 2015
Justin then joined Birkirkara in 2002, and stayed with the club until 2005. Haber was a vital member of the team, gaining him 74 caps.
Towards the end of 2005, Haber joined French-side US Quevilly, where he gained 27 caps.
In July 2008 Haber joined Sheffield United on a two-year deal. Haber had previously undergone a trial during United's 2006-2007 season in the Premier League, however, then manager Neil Warnock decided not to offer the Maltese keeper a contract In August 2009, after failing to break into the Blades first team, Haber was allowed to join their sister club Ferencváros on loan until the end of the year.
In January of the following year Haber signed an 18-month contract with Ferencváros. Justin was a regular first team pick, and in the 2010/2011 season he helped his team to get a respectable 3rd place, and a chance to play in the Europa League.
Haber signed for Greek club Kerkyra on 5 July 2011, where he will play in the Greek Super League, on a two-year deal.
In 2012 he returned to Malta and is playing for Birkirkara F.C.