Born and raised in Sweden, David Sandum moved with his wife to the United States in the early 1990s and settled in Salt Lake City. He attended the University of Utah and graduated in 1999 with a BA in speech communication.

Soon after, he returned to Scandinavia with his young family and ultimately secured a position in IT sales. The demands of his new job, on the heels of many years of stress, took a toll on his health, and he fell into a severe depression. 

In 2002, David had his first exhibit in his new hometown of Moss, Norway. Over the years since, he has pursued a career in art, participating in many group exhibits and annual solo gallery shows. He was also awarded several public art commissions in Hvaler, Norway, and Skagen, Denmark. In 2007 David completed a series of Auschwitz-Birkenau paintings in honor of his grandmother, who was a survivor. One of the pieces was acquired by the Mizel Museum in Denver, Colorado.

More recently, David has embarked on several study trips to New York City, Prague, and Amsterdam. In October 2014, he was accepted to work at the prestigious printmaking studio Estudi de Gravat Ignasi Aguirre Ruiz in Barcelona under master printer Ignacio, who has worked with a number of renowned artists, including Dali, Tapies, and Miro. For his etchings, David primarily uses aquatint, drypoint, or carborundum.