Dennis joined Microsoft in 2017 as a Community Engagement Manager based in Cheyenne, WY. He came to Microsoft from a public relations firm he founded, Ellis Public Affairs, where he consulted for clients such as Wal-Mart, Google, Denver Children’s Hospital, Johnson & Johnson and Anadarko.
Prior to his return to Wyoming, Dennis served as Deputy Attorney General in the Colorado Attorney General’s Office and in Governor Bill Owens’ cabinet as Executive Director of the Colorado Department of Public Health and Environment, the organization tasked with protecting the environment and public health of Colorado. Ellis also served as Legislative Director and Counsel for United States Representative Barbara Cubin (R-WY).
Ellis is a Wyoming native, where his family has owned a sheep and cattle ranch for over 110 years. He is married to Wyoming State Senator Affie Ellis, and is the father of Marlo (13), Archer (11) and Linden (7). He holds undergraduate and law degrees from the University of Wyoming. Ellis serves on the Steering Committee of the Wyoming Business Alliance, is past President of Wyoming Ag in the Classroom, past Vice President of the Petroleum Association of Wyoming and previously served on Wyoming’s Mixed Martial Art Commission.