 After receiving his master's degree, Andrus went to work as a regional planner for the Accomack-Northampton Planning District Commission on Virginia's Delmarva Peninsula.In 1987, Andrus was awarded a Master of Divinity degree from the Virginia Theological Seminary in Alexandria, Virginia.After being ordained deacon on June 20, 1987, he became the senior associate at the Church of the Redeemer in Bryn Mawr and was ordained priest on April 25, 1988.