Systems Administrator (Senior-Level)

Link Solutions, Inc.•Sierra Vista, AZ

6d•$90,000 - $105,000•Onsite

About The Position

Link Solutions is seeking a Senior-Level Systems Administrator to join their team in support of the U.S. Army Information Systems Engineering Command at Fort Huachuca, AZ. This role ensures the availability, security, continuity, and performance of all CSD-managed IT systems, user endpoints, network infrastructure, and supporting technologies. The Senior Systems Administrator supports the U.S. Army Information Systems Engineering Command (USAISSEC), Communications Security Directorate (CSD), by providing comprehensive enterprise-level system, network, and workstation administration services across classified and unclassified environments. This is an exciting opportunity to contribute to cutting-edge projects while safeguarding national security.

Requirements

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.

Nice To Haves

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.

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.