Walter has been a member of the Standing Committee on Legal Aid and Indigent Defendants (SCLAID) since 2016 and currently chairs SCLAID’s Access to Justice Resource Center Subcommittee. He has been a member of Wyoming's Access to Justice Commission since the Wyoming Supreme Court established the commission in 2008. He is currently president of the Equal Justice Wyoming Foundation and an ex officio member of the Equal Justice Wyoming Board of Commissioners. In 2010, Walter received the Wyoming State Bar's pro bono award. Walter is a partner in the Cheyenne, Wyoming office of Holland & Hart LLP where he focuses on administrative law and litigation. He currently leads the firm’s Environmental and Natural Resources practice.