After obtaining an Honours Degree in Mechanical Engineering at the American University of Beirut, in 1985 Soteris worked for a year at Antoniou Track Mixers Ltd in Cyprus. In 1986 he joined for more 2 years Gevo Ltd in Cyprus.

After that, in 1988 Soteris was one of the co-founders of Cyprometal Ltd in Nicosia, Cyprus. Since that time the company expands and grows as a result from all the partnerships and experiences gained.

Soteris Constantinou,