Systems Administrator (Senior-Level)

## Company Description 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. ## Job Description 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 DoW Top Secret Clearance - IAT Level II Certification equivalent or higher - Non-remote (relocation incentive available) The **Senior Systems Administrator** supports 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 do…