[3][4] Soliman made his professional boxing debut on 20 April 1997, defeating Heath Stenton by four-round unanimous decision (UD).
[8] The pinnacle of Soliman's career was on 31 May 2014, when he defeated multiple-time world champion Felix Sturm by UD to win the IBF middleweight title.
Soliman was first announced to have failed a drug test in April 2013, which resulted in the German Boxing Federation ruling the fight a no contest and handing him a nine-month suspension in Germany.
[10] In October 2016, Soliman was exonerated by a German court which judged the Federation to have acted unlawfully, thus overturning the no contest result.
[11] However, in what would be yet another short-lived championship reign, Soliman lost by UD to former undisputed middleweight champion Jermain Taylor on 8 October 2014, enduring four knockdowns due to a debilitating knee injury.