System Administrator (TS/SCI) – DoD Intel, Linux/Windows

DNI (Delaware Nation Industries); Dahlgren (VA); On-site; USD 105,000 - 115,000; Full time

Benefits offered by this job

Premium coverage for employee benefits

401K match

Disability insurance

Pet Insurance

Education reimbursement

Parking/Transit benefits

Job summary

Delaware Nation Industries is seeking a System Administrator at mid level to support the Air Force JWICS/JITS mission. You will administer Linux and Windows servers, monitor system health, manage access controls, and ensure DoD security compliance across classified and unclassified environments.

The role involves patching, backups, vulnerability remediation with STIGs, and coordinating with cybersecurity, network, and government teams. A TS/SCI clearance and 3+ years of experience are required.

Qualifications

• Active DoD TS/SCI security clearance required.
• 3+ years of professional systems administration experience.
• DoD 8570/8140-compliant IAT II certification (e.g., Security+ CE) or equivalent.
• Experience administering Linux and/or Windows in enterprise/DoD environments.
• Strong networking knowledge (TCP/IP, DNS, DHCP, SSH).
• Experience with patching, backups, security hardening, and configuration management.
• Ability to analyze problems, document actions, and resolve incidents.

Responsibilities

• Administer, configure, maintain, and troubleshoot Linux and Windows servers and workstations.
• Install OSes, patches, updates, and security fixes per change-control procedures.
• Monitor health, availability, capacity, and performance; identify trends and action needed.
• Tier II/III troubleshooting for hardware, OS, apps, virtualization, networking, and connectivity.
• Manage user accounts, permissions, groups, and access controls per security policies.
• Support systems across classified and unclassified networks, including data transfers.
• Maintain backups, recovery procedures, configurations, inventories, SOPs.
• Apply STIGs and vulnerability remediation; support ACAS/Nessus findings.
• Assist with system builds, provisioning, integration, and restoration tasks.
• Support VMware and virtualized infrastructure; coordinate with cross-team on incidents.
• Document incidents, changes, troubleshooting steps, resolutions in ITSM/CMDB.
• Participate in maintenance, testing, exercises, on-call support per contract.
• Cross-train with other admins and contribute to knowledge transfer.

Skills

Linux/Windows admin

TS/SCI clearance

Network troubleshooting

Documentation

VMware virtualization

Scripting basics

Education

DoD 8570/8140 IAT II cert (Security+ CE)

Bachelor's degree in IT/cybersecurity/engineering

Tools

VMware vSphere

ACAS/Nessus

STIG Viewer

HBSS/endpoint tools

Job description

Delaware Nation Industries is seeking a System Administrator at mid level to support the Air Force JWICS/JITS mission. You will administer Linux and Windows servers, monitor system health, manage access controls, and ensure DoD security compliance across classified and unclassified environments.

The role involves patching, backups, vulnerability remediation with STIGs, and coordinating with cybersecurity, network, and government teams. A TS/SCI clearance and 3+ years of experience are required.