Dr. Pearce and his family have served with the Southern Baptist International Mission Board (IMB) in Central and Eastern Europe since 1994. They lived in Romania 1995-2001, where Preston taught at the Baptist Theological Institute of Bucharest and Faculty of Baptist Theology at the University of Bucharest. They relocated to Prague in 2001, where he now serves as Theological Education Strategist for Eurasia. Preston also serves as an elder in their local church, the International Church of Prague.  Preston has a PhD in theology from Mid-America Baptist Theological Seminary in USA.

He and Karen have been married since 1990 and have 4 adult children and 2 grandchildren.