Sun Yajin studied architecture at Zhejiang University in Hangzhou and at the University of Stuttgart. She has been working for gmp in Shanghai since 2006, where she is responsible in particular for complex large-scale construction projects and master planning. As Project Lead, she was responsible for the office buildings China UnionPay, Poly Greenland Plaza, Xinzhou Mansion and ThreeCubes in Shanghai, among others. Sun Yajin became Associate Partner in 2023.