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'''Alexander Siffrin''' founded Key-Systems Gbr in October, 1998; he continues to work as its CEO.<ref>[http://www.linkedin.com/profile/view?id=1561306&authType=name&authToken=9Jfb&locale=en_US&pvs=pp&pohelp=&trk=ppro_viewmore Alexander Siffrin]</ref>

'''Alexander Siffrin''' founded [[Key-Systems]] GmbH in October, 1998; he continues to work as its CEO.<ref>[http://www.linkedin.com/profile/view?id=1561306&authType=name&authToken=9Jfb&locale=en_US&pvs=pp&pohelp=&trk=ppro_viewmore Alexander Siffrin]</ref>

==Reference==

==Reference==

From 1983 to 1986 he went to the school of the German embassy in Addis Abeba, Ethiopia. In the year 1987 he moved back to Germany and attended the grammar school "Gymnasium Schloß Hagerhof" in Bad Honnef, Rhein. From 1992 to 1995 Alexander Siffrin lived in La Paz, Bolivia and finished the school "Colegio Mariscal Braun“ with the general qualification for university entrance in 1995. From 1996 to 2001 he studied physics and computer science at the University of the Saarland.<ref>[http://www.brandshelter.com/en/about/key-personnel/ BrandShelter Key Personnel]</ref>

From 1983 to 1986 he went to the school of the German embassy in Addis Abeba, Ethiopia. In the year 1987 he moved back to Germany and attended the grammar school "Gymnasium Schloß Hagerhof" in Bad Honnef, Rhein. From 1992 to 1995 Alexander Siffrin lived in La Paz, Bolivia and finished the school "Colegio Mariscal Braun“ with the general qualification for university entrance in 1995. From 1996 to 2001 he studied physics and computer science at the University of the Saarland.<ref>[http://www.brandshelter.com/en/about/key-personnel/ BrandShelter Key Personnel]</ref>