She is the founder of youarethecity, a research, design and planning practice interested in creating dialogue about the urban environment. She collaborates with institutions, individuals and non-profit organizations to produce maps, diagrams, writings, designs, websites, events and exhibitions about urban spaces. Kaja received a Diploma in Architecture from the University in Karlsruhe, Germany and a Master of Science in Urban Planning from Columbia University in New York. Prior to founding youarethecity in 2008, she worked for the New York City Department of City Planning as an Urban Designer.