Zefeldt received his BA in Art from the University of California, Santa Cruz in 2009. He was awarded the Dedalus MFA Fellowship in 2011. He was the River Fellows Artist at Columbus State University in Georgia, and was a resident artist at the Vermont Studio Center. Zefeldt has had solo exhibitions at the Minneapolis Institute of Art, the Santa Monica Museum of Art, Swarm Gallery in Oakland, Michael Rosenthal Gallery in San Francisco, and Skinner Howard Gallery in Sacramento.