His first job was the sale of Christmas carp in the centre of Bratislava. He used the money he earned in the icy water for a skiing trip with his friends. After graduating from the Faculty of Electrical Engineering at STU with a specialization in Electronic Computers, Peter remained working as a teacher at his alma mater, involved in projects on artificial intelligence, which later became the subject of his doctoral thesis. In the end, however, he did not win the PhD degree voluntarily, as he decided to start working abroad after the boarders opened with the fall of socialist regime in Slovakia.