OVERVIEW: The Zero Trust Architecture Senior Technical Expert (STE) serves as the senior advisor and technical authority supporting the CIO's Zero Trust program. This role is responsible for providing expertise in the design, integration, and implementation of Zero Trust principles across large enterprise IT environment, ensuring compliance with DoD, IC, and federal cybersecurity mandates. The STE will provide expert guidance on Zero Trust strategy, architecture, while enabling secure digital transformation across multi-cloud, hybrid, and mission-critical systems and data management. GENERAL DUTIES: Program Leadership & Strategy Provide expertise to the Government ZT Program Manager on Zero Trust adoption strategies, roadmaps, and policy integration. Support planning, coordination, and oversight of ZT implementation, including project plans, schedules, and resources. Assess current IT strategies, recommend courses of action, and operationalize Cyber IT Strategy in alignment with the organization's mission. Drive maturity assessments, gap analyses, and prioritized remediation strategies for enterprise ZTA adoption. Architecture & Technical Expertise Provide expertise on ZT design and develop ZT reference architectures, system designs, and data flows as they apply to all the ZT Pillars. Conduct technical assessments across identity, device, network, application, and data layers to identify gaps against Zero Trust principles. Integrate ZT capabilities into enterprise networks, cloud, hybrid environments, and DevSecOps pipelines. Provide expertise support on the engineered ZT solutions such as Cloud, Data engineering, and implementation of advanced ZT capabilities: ICAM, micro segmentation, encryption, continuous monitoring, and software-defined perimeters. Governance & Compliance Assist in developing and maintaining IT governance frameworks and SOPs aligned to ZT objectives. Ensure compliance with NIST SP 800-207, DoD Zero Trust Strategy, CISA ZT Maturity Model, and RMF integration requirements. Provide recommendations for mitigation and remediation of identified vulnerabilities during RMF and continuous monitoring activities. Stakeholder Communication: Collaborate with senior leadership, acquisition teams, engineers, and mission stakeholders to integrate ZT into enterprise workflows. Respond to ZT-related data calls, provide technical editing, and develop executive reports, presentations, and policy updates. Serve as the primary technical liaison for Zero Trust engagements, ensuring alignment across technical, programmatic, and strategic stakeholders.