Was born in 1985. He began his studies at the Prague Conservatory (violin with Dana Vlachová) and conducting privately with Leoš Svárovský who became one of his professors after he joined the conducting department at the Music Faculty of the Academy of Performing Arts in Prague. He has graduated from Vladimir Kiradjev's courses at Reichenau in Austria and Jorma Panula in Weimar, Germany.
He has cooperated with many prominent orchestras such as Prague Radio Symphony Orchestra, Prague Philharmonia, Prague Chamber Orchestra, Bohuslav Martinů Philharmonic Orchestra, Chamber Philharmonic Orchestra of South Bohemia, Pilsen Philharmonic Orchestra, Academy Chamber Soloists, Chamber Orchestra Berg, Orchestra of the Opera in Ústí nad Labem or Czech Virtuosi.
At the age of 17 he founded the chamber orchestra Quattro of which he is conductor, as well as artistic director, and with which he has given dozens of concerts. For the company ArcoDiva he recorded CD with works of Czech composers (Quattro plays Quattro), followed by a CD ordered by the Government of Luxemburg (Carmina lucemburgiana) and project JA RA LAJ with tenor singer Štefan Margita.
He regularly participates in programmes of the Czech Television and Czech Radio, has cooperated also with the wind harmony North Downs Symphonia and with choirs such as Canti di Praga, Perchta Český Krumlov and Prague Chamber Choir.
Marek Štilec also devotes himself to opera. At the Prague Academy Opera Studio he prepared a premiere of the Martinů opera Comedy on the Bridge and took part in the production of Ženitba (The Marriage) by the same composer. He is working as a conductor on the Donizetti opera Viva la mamma at the F. X. Šalda Theatre in Liberec.
He has worked with a number of eminent singers (Štefan Margita, Ivan Kusnjer, Adriana Kohútková, Ján Galla) and instrumentalists (Jitka Hosprová, Lubomír Brabec, Jaroslav Svěcený, Jiří Bárta, Jana Boušková, Kateřina Englichová).