Systems Administrator (Senior-Level)

Link Solutions is seeking a Systems Administrator (Senior-Level) to join our team in Fort Huachuca, AZ.

• Active DoD Top Secret Clearance required
• IAT Level II Certification equivalent or higher
• Non-remote (relocation incentive available)

The Systems Administrator will support the U.S. Army Information Systems Engineering Command (USAISEC), Communications Security Directorate (CSD), by administering and sustaining mission-critical enterprise infrastructure supporting secure communications and national defense operations. This position provides senior-level support across Windows and Linux server environments, virtualization platforms, Active Directory services, network infrastructure, and cybersecurity compliance activities in classified and unclassified environments.

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.

• Active DoD Top Secret Clearance required.
• Eight (8+) years of experience administering, maintaining, and supporting enterprise information technology systems, including Windows and/or Linux server environments, virtualization platforms, Active Directory, and networked infrastructures.
• IAT Level II Certification equivalent or higher per DoD 8570/DoD 8140 (CompTIA Security+ CE, CCNA Security, GICSP, GSEC, SSCP, etc.).
• Experience administering Microsoft Windows Server environments, Active Directory, Group Policy, and virtualized infrastructure such as VMware vSphere/ESXi.
• Knowledge of network management, monitoring, and troubleshooting for enterprise server and communications environments.
• Ability to install, configure, maintain, and troubleshoot network, server, and communication technologies.

Preferred:

• Bachelor's degree in Computer Science, Information Technology, Software Engineering, or a related technical discipline.
• Experience supporting Department of Defense (DoD), Army, DISA, NETCOM, USAISEC, or other federal government environments.
• Experience supporting videoconferencing, VoIP, and audio/visual technologies.
• Familiarity with fiber optic cabling, digital media interfaces, and communications infrastructure.
• VMware Certified Professional (VCP), Microsoft, Cisco CCNA/CCNP, or equivalent industry certifications.
• Experience providing support for mission-critical systems and VIP end users.
• Experience administering VMware vSphere/ESXi, Windows Server, Active Directory, and Group Policy in enterprise environments.
• Excellent written and verbal communication skills.
• Strong organizational skills with attention to detail and the ability to manage multiple priorities.
• Proven problem-solving and troubleshooting skills in complex technical environments.
• Self-motivated with the ability to work independently with 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.