Prof Tseng held a number of senior arts management positions in Hong Kong, including Executive Director of the Hong Kong Arts Festival Society, Secretary-General of the Hong Kong Arts Development Council and Head of Radio 4, RTHK. He served as Chair and Professor of the Arts Administration Department of the Shanghai Conservatory of Music from 2005 to 2008. In 2012, he joined the Education University of Hong Kong as Adjunct Professor and masterminded the development of the Executive Master of Arts in Arts Management & Entrepreneurship programme. He is currently Guest Professor of the Central Academy of Drama, Beijing Dance Academy and Xing Hai Conservatory of Music.
Prof. Tseng has served as board and committee members in many local and international organizations. He was Chairman of the Hong Kong Arts Administrators Association (1991-94), Chairman of the Committee on Venue Partnership of the Leisure and Cultural Services Department (2012-17), a member of the Hong Kong Government's Advisory Committee on Arts Development (2012-17) and a board member of the Association of Arts Administration Educators (AAAE) in the USA (2014-19). Currently he is a member of the Artistic Board of the Macau International Music Festival, a director of the Arts Committee of the Shenzhen Belt & Road International Music Festival, an examiner of the Hong Kong Arts Development Council, as well as board members of the Hong Kong Dance Company, Hong Kong Children's Choir, Tang Shu Wing Theatre Studio, Hong Kong Gaudemaus Dunhuang Ensemble.
His book "Principles of Arts Management" (in Chinese) has sold more than 10,000 copies and a revised edition was published in 2018.