Systems Administrator (Senior-Level)

Job Responsibilities

• Administer, maintain, and support physical and virtual Windows, Linux/UNIX, and Active Directory server environments to ensure system availability, performance, and security.
• Install, configure, patch, upgrade, and sustain operating systems, applications, and enterprise services in accordance with Government and organizational requirements.
• Monitor system and network performance; troubleshoot and resolve hardware, software, connectivity, and operational issues across classified and unclassified environments.
• Provide Tier II/III technical support for end users, including workstation deployment, peripheral support, user account administration, and technical training.
• Manage user accounts, permissions, privileged access, and authentication services while enforcing cybersecurity and access control policies.
• Administer and support network infrastructure, including routers, switches, firewalls, encryptors, LAN/WAN connectivity, and copper/fiber cabling systems.
• Maintain network documentation, configurations, and port assignments while monitoring uptime, traffic, and overall network health.
• Support cybersecurity operations by implementing RMF requirements, managing security controls, conducting vulnerability assessments, supporting continuous monitoring activities, and maintaining ATO compliance documentation.
• Respond to cybersecurity incidents, malware infections, and classified spillage events, including system isolation, evidence preservation, and remediation support.
• Execute and validate backup, recovery, contingency, and disaster recovery procedures to ensure system resilience and operational continuity.
• Coordinate with vendors, Government stakeholders, and support organizations to resolve technical issues, manage support tickets, and oversee warranty and maintenance activities.
• Support system modernization, technology evaluations, lifecycle replacement planning, system testing, and implementation of new technologies and capabilities.
• Prepare and deliver technical briefings, reports, recommendations, and analysis to leadership, stakeholders, and technical governance boards.
• Develop, maintain, and update system documentation, standard operating procedures (SOPs), configuration records, and troubleshooting guides to support operations and rapid onboarding of new personnel.
• Identify and implement process improvements, automation opportunities, and operational efficiencies in support of mission requirements and organizational objectives.

Qualifications

• A U.S. Citizen with an active DoW Top Secret Clearance.
• IAT Level II Certification equivalent or higher per DoD 8570/DoD 8140 (CompTIA Security+ CE, CCNA Security, GICSP, GSEC, SSCP, etc.).
• Ten (10+) years of experience administering, maintaining, and supporting complex enterprise information technology systems, including servers, operating systems, networks, virtualization platforms, and cybersecurity technologies.
• Experience with systems and network administration, including operating systems, virtualization platforms, and network protocols.
• Knowledge of network management, monitoring, and troubleshooting for enterprise server and communications environments.
• Experience supporting videoconferencing, VoIP, and audio/visual systems.
• Familiarity with fiber optic cabling, digital media interfaces, and communications infrastructure.
• Ability to install, configure, maintain, and troubleshoot network, server, and communication technologies.

Preferred

• Bachelor's degree in Computer Science, Software Engineering, or a related technical discipline.
• Experience working in a Department of Defense (DoD) environment.
• Experience providing quality service and support for mission-critical systems and VIP end users.
• Excellent communication skills (written and oral) and interpersonal skills.
• Superior organizational skills, attention to detail, and ability to prioritize and manage multiple tasks.
• Problem solver and troubleshooter who thrives in resolving complex problems.
• Strong self-starter requiring minimal supervision.