Sung is a graduate of the School of the Art Institute of Chicago with a fine arts degree and Domus Academy in Milano with a Masters in Design. Sung began his design career in Milano at Samsung Design Milano before taking a faculty position in the School of the Art Institute of Chicago's Designed Objects program. Since 2013, Sung has served at the University of Illinois at Chicago's School of Design as an Assistant Professor and Director of Undergraduate Studies.
Through Sung Jang Laboratory, Sung strives to understand qualitative attributes such as beauty, elegance, and extravagance in design through culturally-rooted approaches. In parallel with his independent practice, Sung is a partner at Article, LLC, a design studio based in Chicago. Sung has worked with international brands such as Louis Vuitton, Guzzini, and Roche Bobois and been represented internationally at Venice Biennale, Design Miami, and the aA Design Museum amongst others.