Systems Administrator (Senior-Level

Link Solutions, Inc. delivers reliable and effective Information Technology services to government clients in support of critical mission needs. Delivering a broad range of Infrastructure Operations, Application Development, Cybersecurity, Virtualization, Cloud and Mobility services.

If you’re looking for a technology company that values innovation, with a vision toward the future of the technology landscape, look no further than Link Solutions! Link is quality and compliance-focused, under our guiding philosophy, “Mission First, Customer Always".

We are certified in ISO 9001:2015, ISO 20000-1:2018, and ISO 27001:2022; CMMC Level 2 certified; and appraised at CMMI Maturity Level 3 for Services and Development.

Link Solutions is seeking a
Systems Administrator (Senior-Level)to join our team in support of the U.S. Army Information Systems Engineering Command at Fort Huachuca, AZ.

• U.S. Citizen with an active DoWTop Secret Clearance
• IAT Level II Certification equivalent or higher

The Senior Systems Administrator
will support the U.S. Army Information Systems Engineering Command (USAISEC), Communications Security Directorate (CSD), by providing comprehensive enterprise-level system, network, and workstation administration services across classified and unclassified environments. This role ensures the availability, security, continuity, and performance of all CSD-managed IT systems, user endpoints, network infrastructure, and supporting technologies.

Join our dynamic team at a top-tier organization, where work-life balance and employee well-being take center stage. This exciting opportunity lets you contribute to cutting-edge projects while safeguarding our national security.

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.

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities that are required of the employee for this job.

• U.S. Citizen with an active DoW Top Secret Clearance.
• Ten (10+) years of experience administering, maintaining, and supporting complex enterprise information technology systems, including servers, operating systems, networks, virtualization platforms, and cybersecurity technologies.
• IAT Level II Certification equivalent or higher perDoD 8570/DoD 8140 (CompTIA Security+ CE, CCNA Security,GICSP,GSEC, SSCP, etc.).
• Experience with systems and network administration, including operating systems, virtualization platforms, and network protocols.
• Knowledge of network management, monitoring, and troubleshooting for…