Mr. Šajn joined Istrabenz energetski sistemi, a predecessor to GEN-I in 2004. Since 2011 he is in his role as Member of Management Board of GEN-I responsible for operations and IT for GEN-I group. His main areas of expertise include business processes and underlying IT architecture and solutions supporting energy trading and sales which are main activities of GEN-I group. His main body of work includes management of development and other projects concerned with digitalization, optimization and automation of complex business processes and expanding operational capabilities of GEN-I. In this capacity he was in charge of technical preparations for entry into electricity and natural gas markets in Slovenia and Croatia. In 2017 he coordinated technical and organizational aspects of the merger between GEN-I and one of its competitors.