During his tenure at the TU Dresden, Marcus Stein co-developed a patented heating technology that laid the foundation for the cera2seal and cera2heat heating system, now central to watttron GmbH's operations. In February 2016, together with Dr. Sascha Bach, Ronald Claus von Nordheim, he co-founded watttron with its headquarters in Freital, where he serves as Commercial Director. Under their leadership, watttron has grown from a start-up into a thriving company with 75 employees, serving 4 of the world's 5 largest CPG companies.