Randall joined Wycliffe Bible Translators in 2010 and is part of the Diaspora Recruitment team as a mobilizer among the second generation Asian churches. He is a third generation, Canadian-born Chinese (CBC) and is married to Rita. They have two children, Tabitha and Jairus.

Randall earned a Master of Divinity degree from Ontario Theological Seminary and Doctor Of Ministry Degree from Fuller Seminary. He was the youth pastor at Richmond Hill Chinese Community Church from 1991-1995 and missions pastor from 2006-2009. From 1995-2003 he and his wife served with Africa Inland Mission in the country of Lesotho. Randall is a Head Facilitator and the Ontario regional co-ordinator for Simply Mobilizing, which offers the Kairos course, and is an adjunct professor at Tyndale University College and Seminary.