Michael is president of the Alliance of Baptists and Deputy Director for Faith in Action, formerly PICO National Network, a national community organizing network that gives people of faith the tools that they need to fight for justice and work towards a more equitable society. Michael is a senior fellow at Auburn Seminary and affiliate faculty at BST.

On August 1, 2023, Rev. Dr. Mixon started as Interim Senior Minister of Old Cambridge Baptist Church in Cambridge, Massachusetts. Rev. Dr. Mixon is an ordained American Baptist minister with over 30 years of experience in pastoral ministry, church leadership, and social justice advocacy. He has been involved in various regional and national organizations. These include the Alliance of Baptists, the Association of Welcoming and Affirming Baptists, and the Baptist Peace Fellowship of North America. Rev. Dr. Mixon also holds a Master of Science in Marriage and Family Therapy from California State University and a Doctorate in Religion and Psychology from Graduate Theological Union.