 During his college years Ombiji also played with the Michigan Bucks in the USL Premier Development League.Ombiji turned professional in 2007 when he joined the Harrisburg City Islanders of the USL Second Division.He was a major contributor on Harrisburg’s 2007 Championship team, scoring 10 goals in his two seasons with the club, recording five game-winning goals, and receiving an All-League Second Team selection in 2007.