Jerman was born in San Carlos de Bariloche, Argentina.
After finishing secondary school he began studying art with the academic artist Juan Antonio Spotorno in Buenos Aires, afterwards with Rafael Roca in Bariloche.
He began to plan, draw and set up stained glass windows in 1981, when he was apprentice of Sante Pizzol in Milan.
Marko Jerman's stained glass can be seen in many churches in Slovenia, Croatia, Argentina, Austria, and in some private buildings also: St. Family Ljubljana Moste, Preska and Sora pri Medvodah, Vrhpolje near Vipavi, Maribor dome, Hoče near Mariboru, Ljubično (Poljčane), monastery in Kamnik, Šentjošt (Horjulom), Zaplana, Kamnik under Krim, Poreč, Čirče at Kranju, Šentjakob at Sava, Nova Oselica, Hrušica, Lago Bueno (patagonia, Arg.
Jerman represented Argentina in cross-country skiing at the 1976 and 1980 Winter Olympics.