Systems Administrator (Senior-Level)

Link-Solutions,-Inc; Sierra Vista (AZ); On-site; USD 95,000 - 130,000; Full time

Benefits offered by this job

Paid holidays

Paid time off

Medical insurance

Dental insurance

Vision insurance

Company-paid long-term disability

Life insurance

Referral bonuses

Relocation reimbursement

Certification reimbursement

Retirement plan

Job summary

Link Solutions, Inc. is seeking a Senior Systems Administrator to join our team supporting USAISEC at Fort Huachuca, AZ. You will deliver enterprise-level system, network, and workstation administration across classified and unclassified environments, ensuring availability, security, and performance of IT systems.

The role requires U.S. citizenship with a DoD Top Secret clearance, IAT Level II, and 10+ years of experience in enterprise IT.

Qualifications

• U.S. Citizen with an active DoW Top Secret clearance.
• 10+ years of experience administering complex enterprise IT systems.
• IAT Level II Certification or higher per DoD 8570/DoD 8140.
• Experience with Windows, Linux/UNIX, and Active Directory.
• Knowledge of network management, security, and enterprise environments.

Responsibilities

• Administer, maintain, and support Windows, Linux/UNIX, and AD server environments.
• Install, configure, patch, upgrade, and sustain operating systems and enterprise services.
• Monitor system and network performance; troubleshoot hardware and software issues.
• Provide Tier II/III technical support for end users and training.
• Manage user accounts, permissions, and authentication services securely.
• Administer and support network infrastructure including routers and switches.
• Maintain network documentation and monitor uptime and traffic.
• Support RMF compliance, vulnerability assessments, and continuous monitoring.
• Respond to cybersecurity incidents, malware, and classified spills.
• Execute backup, recovery, contingency, and disaster recovery procedures.
• Coordinate with vendors and stakeholders to resolve issues and manage tickets.
• Support system modernization and evaluations of new technologies.
• Prepare technical briefings and reports for leadership and governance boards.
• Develop and update SOPs and troubleshooting guides for rapid onboarding.

Skills

Top Secret Clearance

IAT Level II Certification

Windows/Linux/UNIX administration

Active Directory

Network administration

Education

Bachelor's degree in Computer Science, Software Engineering, or related field

Job 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 aSystems Administrator (Senior-Level)to join our team in support of the U.S. Army Information Systems Engineering Command at Fort Huachuca, AZ.

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

The Senior Systems Administratorwill 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.

Qualifications

• U.S. Citizen with an active DoW Top SecretClearance.
• 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 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 communicationskills (written and oral) and interpersonal skills.
• Superior organizational skills, attention to detail, and ability to prioritize and manage multiple tasks.
• Problem solver and troubleshooterwho thrives in resolvingcomplex problems.

Additional Information

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.