Geiger has deep roots in the Bachman Lake Community, having worked as a church planter and pastor of Cristo Rey Presbyterian Church from 2002 to 2015. During those years, he experienced firsthand the rich community in Northwest Dallas, as well as the brokenness and challenges created by poverty. Those experiences led to a vision for a new organization that would work alongside Cristo Rey and other churches to serve the educational, material, and emotional needs of the community. He brought this vision to a group of committed leaders who started Casa del Lago in 2014. Shortly after its start, Geiger and his family moved to Los Angeles, where he served for two years as a senior director on the executive leadership team at Pacific Crossroads Church.