Lead System Administrator

We are partnering with a leading federal contractor that supports mission-critical programs across national security, defense, and public service delivery. This organization focuses on sustaining, operating, and improving essential government systems and services, demonstrating proven operational excellence and a deep commitment to mission success for its customers. Joining this team means becoming part of a collaborative, mission-driven environment that values teamwork, accountability, and professional growth, empowering individuals to deliver high-impact solutions nationally.The Role Lead the enterprise Patch and Upgrade Management function, owning strategy, prioritization, risk-based remediation, and rollback planning across on-prem, cloud, and hybrid systems. Identify, analyze, test, and apply system, software, and hardware patches and upgrades in accordance with vulnerability management timelines. Direct prioritization and remediation of high-risk and known-exploited vulnerabilities. Establish and maintain standard configuration baselines and secure system hardening practices. Design, test, and oversee rollback and contingency procedures to restore systems to a known good state. Ensure comprehensive patch coverage across all IT and OT environments, coordinating with cybersecurity, change management, and operations teams.What You'll Need Ability to obtain and maintain a Public Trust clearance; active Public Trust and/or DHS suitability preferred. 10+ years of system administration experience, including enterprise scale patch and vulnerability management. Expertise in Enterprise Patch & Upgrade Management across Windows, Linux, network devices, and cloud platforms. Experience with vulnerability remediation aligned to CVE, KEV, and ISVM guidance. Knowledge of secure configuration baselines, system hardening, and IT/OT environment support. Familiarity with change, configuration, release management, and recovery planning.What's On Offer Opportunity to work on mission-critical programs for federal agencies. Supportive environment focused on professional growth and career development. Comprehensive benefits package including health insurance, retirement plan, and paid time off. A collaborative culture emphasizing teamwork and accountability.Apply via Haystack today!