Dorfsman studied at the Cooper Union, where he received a four-year scholarship, and it was not long after his graduation that he began working for CBS. In 1964 he became the design director for all of CBS. As the design director he oversaw the use of the infamous CBS eye logo, produced annual reports and other promotional materials and designed the interior signage and graphics of the entire CBS building, designed by architect Eero Saarinen. One of his most revered works was the Gastrotypographicalassemblage, a 35-foot long wall of carved wooden words, created for the dining area in the building.
Dorfsman worked as an art director for CBS for 31 years before retiring and forming his own small studio.