Systems Administrator (Senior-Level)

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 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 per DoD 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 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. Link Solutions Inc. offers a competitive compensation and benefits package to include paid holidays, paid time off, medical, dental, vision, company-paid long and short-term disability, life insurance, referral bonuses, relocation reimbursement program, certification reimbursement program, retirement, and more. Link Solutions, Inc. is an EOE. AA/M/F/D/V.  We participate in the E-Verify Employment Verification Program. All your information will be kept confidential according to EEO guidelines.