As a graduate from the Faculty of Electrical Engineering of the Slovak Technical University in Bratislava he started to work in private company PosAm as a trader to become a director and the owner of the company just four years after. Under his leadership, the company switched from sales to the development of software solutions and has been placed in the top ten in the TOP Trend Ranking for several years in a row. Marián Marek is a member of the Presidium of the IT Association of Slovakia, a professional association of the most important domestic and foreign companies operating in the field of information and communication technologies and a member of the Presidium of the National Union of Employers.