Nicholas Papaefthimiou is a licensed architect with more than 15 years professional experience in firms across the Unites States as well as Europe. In 2014 he founded infillPDX, a design and research collaborative focused on the development of financially, socially, and environmentally sustainable models of infill housing models to address Portland’s housing crisis. He holds Masters Degrees in Architecture and in Engineering from the University of California, Berkeley and Bachelor of Science degrees in both Architecture and Urban Planning from the Massachusetts Institute of Technology. He teaches courses at Portland State University and the University of Oregon in design, building science research methods, and structural theory. He lives in SE Portland with his wife and two daughters.