Prior to joining the Trinity faculty, Dr. Cha was involved in a number of different ministries, including youth and young adult ministry in Korean American churches, campus ministry with InterVarsity Christian Fellowship, church planting and pastoring a multiethnic Asian American congregation. He has also served as a board member of InterVarsity Christian Fellowship USA, a member of the Committee on Race and Ethnicity (CORE) of the Association of Theological Schools (ATS) and currently serves as a board member of the Louisville Institute.