Ryan Leidner received his undergraduate degree from Brown University and a Masters of Architecture from Harvard University's Graduate School of Design. He is a Registered Architect in the State of California, a member of the American Institute of Architects, and is based in San Francisco.

Ryan was a founding member and Design Director of the non-profit organization MASS Design Group, with whom he designed the Butaro Hospital and the Giribuntu School in Rwanda. Additionally, he has worked with a range of offices including Morphosis Architects, Marmol-Radziner and Associates, and Craig Steely Architecture. In addition to having taught at at Harvard's Career Discovery Program, he has been a visiting critic at the University of Texas at Austin, the University of California at Berkeley, and at the California College of the Arts, and his work with MASS has been published in a variety of books and periodicals.