Senior System Administator - TS/SCI Clearance
About The Position
The Senior System Administrator supports the administration, maintenance, security, and optimization of mission-critical Windows-based infrastructure in a secure federal environment. The role requires an experienced administrator with strong technical troubleshooting skills, a proactive approach to system performance and reliability, and an active Top Secret/Sensitive Compartmented Information (TS/SCI) clearance. The administrator manages Windows Server and desktop environments, directory and domain services, system monitoring and maintenance, enterprise applications, server hardware, and virtualized infrastructure. The role also supports security compliance, escalated technical incidents, operational automation, and coordination with cybersecurity, network, engineering, and help desk teams. The position includes mentoring junior administrators and documenting procedures and operational practices.
Requirements
- Active TS/SCI clearance at the time of hire.
- U.S. citizenship.
- At least 8 years of relevant experience in systems administration, infrastructure operations, or enterprise IT support.
- Strong hands-on experience administering Microsoft Windows Server and Windows workstation environments.
- Experience with Active Directory, Group Policy, DNS, DHCP, domain services, user permissions, and enterprise authentication.
- Experience with patching, vulnerability remediation, system hardening, and applying secure configuration baselines.
- Ability to troubleshoot complex hardware, software, operating system, authentication, and network-related issues.
- Experience supporting secure or classified environments, including adherence to change management and documentation requirements.
- Strong written and verbal communication skills, including the ability to document procedures and brief technical status to stakeholders.
Nice To Haves
- DoD 8570/8140 IAT Level II certification, such as Security+ CE, or the ability to obtain or maintain the required compliance certification.
- Experience with VMware, Hyper-V, Nutanix, or other enterprise virtualization platforms.
- Experience with Microsoft Endpoint Configuration Manager, SCCM, MECM, PDQ Deploy, or similar software deployment tools.
- Familiarity with ACAS/Nessus vulnerability findings, HBSS/ESS tools, STIG Viewer, and remediation tracking.
- Experience creating or maintaining Windows images, deployment packages, and automated build processes.
- Working knowledge of backup and recovery processes, disaster recovery planning, and continuity of operations support.
- Experience supporting IIS, file services, print services, certificate services, or other Microsoft enterprise services.
Responsibilities
- Administer, maintain, and troubleshoot Windows Server and Windows desktop environments across classified or secure enterprise networks.
- Manage Active Directory, Group Policy Objects, DNS, DHCP, user accounts, security groups, organizational units, and domain controller operations.
- Perform system monitoring, performance tuning, capacity planning, patch management, vulnerability remediation, and root cause analysis.
- Install, configure, upgrade, and support operating systems, enterprise applications, server hardware, and virtualized infrastructure.
- Develop, maintain, and execute standard operating procedures for system builds, configuration baselines, software deployments, and maintenance activities.
- Support compliance with security standards and requirements, including DISA STIGs, vulnerability scan remediation, change control, and configuration management.
- Provide Tier II/III support for escalated incidents involving servers, workstations, applications, authentication, permissions, and enterprise services.
- Use PowerShell or other scripting tools to automate administration, reporting, software deployment, and maintenance tasks.
- Coordinate with cybersecurity, network, engineering, and help desk teams to support secure and reliable system operations.
- Mentor junior administrators and provide technical guidance on troubleshooting, documentation, and operational best practices.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
