Ján is currently developing business activities in the Slovak market as a director of DES Slovakia. He has been fulfilling DES’s growth strategy in flexibility management in both consumption & production of electricity. In his role, he builds partnerships & deepens relationships with key institutions & partners.​

For several years, Ján worked at ČEZ Slovakia, where he managed to build a portfolio for purchasing electricity from renewable sources. Before that, he was responsible for a project introducing handover EIC codes to production facilities at ZSD, a.s.