Zscaler Public Sector Summit 2026

Robert Roser is the CISO at the Idaho National Laboratory.

Chad Tetreault is a Field Chief Technology Officer (CTO) for Federal, at Zscaler. In his role as Field CTO he provides technical guidance and leadership for the Public Sector Go-To-Market (GTM) team and their customers. His strategic vision and unwavering commitment to technological advancement coupled with his past experience in government leadership roles, provides Zscaler customers a proven, trusted advisor for their digital transformation efforts.

Prior to Zscaler, Chad served as Deputy Chief Technology Officer and Deputy Chief Artificial Intelligence Official at U.S. Citizenship and Immigration Services (USCIS), where he led transformative digital modernization efforts that redefine government technology capabilities. He spearheaded a pivotal Secretary of Homeland Security GenAI pilot, delivering breakthrough AI solutions including synthetic human-like officer training systems, Neural Machine Translation
capabilities, and Model Context Protocol services with comprehensive AI security governance and guardrails. Additionally, he contributed operational insights to the DHS Generative AI Public Sector Playbook, helping establish the framework for responsible AI governance across federal agencies.

Throughout his twenty plus years of federal service, Chad has consistently built high-performing teams, established cloud-native engineering programs, and championed continuous improvement methodologies that help position USCIS as a leader in digital government innovation.

Wade Zarriello is the Director of Infrastructure & User Services Group at CMS.