Keywords: Senior Systems Engineer, Systems Engineer, Active Directory, AD, Group Policy, GPO, DNS, PKI, Public Key Infrastructure, ICAM, Identity and Access Management, IAM, Enterprise Infrastructure, Systems Engineering, PowerShell, Ansible, DevOps, Automation Engineer, Windows Server, Linux Administration, Enterprise IT, Infrastructure Engineering, Security+, Requirements Analysis, Enterprise Architecture, Systems Integration, Technical Documentation, Infrastructure Modernization, Identity Management, Certificate Management, Federal IT, TS/SCI, Newington VA. Responsibilities of the Senior Systems Engineer SME include: Lead enterprise systems engineering initiatives supporting large-scale identity, access, and infrastructure modernization efforts.