Erhardt Graeff is an educator, social scientist, public interest technologist, and public servant. He works on the design and use of technology for civic engagement, civic learning, and social justice, and on the ethical responsibility of technologists as stewards of democracy. His current research is on articulating the responsibilities of engineers as citizens, developing new forms of civic education within undergraduate engineering, and community-engaged collaborative data science to help organizations fighting mass incarceration. His pedagogy is organized around creating spaces for student-owned and -led public interest technology projects. Erhardt is an Associate Professor of Social and Computer Science at Franklin W. Olin College of Engineering, a faculty associate at the Edmond J. Safra Center for Ethics at Harvard University, and trustee of the Needham Free Public Library. He holds a PhD from the MIT Media Lab, where he was a member of the Center for Civic Media.