Mladen Markoč graduated from the Faculty of Law of the University of Zagreb. He specialises in company law, securities law, and commercial law. Mr. Markoč has been a consultant in numerous important transactions in the Croatian and foreign capital markets and has been a regular speaker at the Zagreb Stock Exchange Academy and, occasionally, at the Judicial Academy. He started his career in law in 1988 as a legal apprentice. He was a corporate secretary at the pharmaceutical company PLIVA d.d. from 1990 to 1997, partner at the law firm Bogdanović, Dolički & Partners from 1997 to 2007, and Management Board member at ICF Grupa d.o.o. in 2008. He served as an attorney at the Mladen Markoč law office from 2010 to 2013, then at the joint law office of Mladen Markoč and IvanKrešimir Tomić, which is today known as the joint law office of Mladen Markoč, Relja Pećina and Fran Kušeta. He is vice president of the Association of Business Lawyers of Zagreb.

He was also a supervisory board member at Valamar Adria holding d.d. (2011 – 2014), and is currently a member of the supervisory boards of Valamar Riviera d.d., Imperial Riviera d.d., Helio Faros d.d., Ingra d.d., ICF d.d., Hotel Laguna d.d. and Proficio d.d, while he was a member of the supervisory board of Hoteli Laguna d.d. until November 9, 2021. He is a member of the Management Board of the Magdalena Clinic for Cardiovascular Diseases at the Faculty of Medicine of J.J. Strossmayer in Osijek and the president of the supervisory board of CGS Capital d.o.o. He has been the Supervisory Board Deputy Chairman of Valamar Riviera d.d. since 2014.