Jack Gernsheimer received a BFA in Advertising Design from Syracuse University in 1968 and began his career at J. Walter Thompson in New York. He founded Partners Design with his twin brother Jeff in 1971 and continues to be actively involved in design and creative direction. In 1978, Jack worked in Oslo with internationally acclaimed designer Bruno Oldani.

Jack has designed nearly 500 logos for businesses ranging from Fortune 500 companies to one-person startups. His work has appeared in Communication Arts, Graphis, Print, Novum, and other prestigious international publications. He has lectured, written about, and taught graphic design at Pennsylvania School of Art and Design, and Kutztown University of Pennsylvania. He lives with his wife, Nancy Wolff, in Bernville, Pennsylvania and New York City.