Senior Systems Administrator: Azure & Security Focus

Arena Technical Resources, LLC (ATR) is seeking a Sr. Systems Administrator in Manassas, VA to manage Windows servers, AD, GPOs, and cloud workloads. The role emphasizes security, vulnerability assessment, and compliant configurations across on‐prem and Azure environments. Responsibilities include maintaining OS baselines, implementing security controls, supporting staff, and ensuring disaster recovery readiness. A 10+ year track record and strong collaboration skills are essential for success.