DoD Systems Administrator – TS/SCI | Linux & Windows

Delaware Nation Industries; Dahlgren (VA); On-site; USD 85,000 - 120,000; Full time

Job summary

Delaware Nation Industries is seeking a System Administrator – Mid to support the Air Force JWICS/JITS mission. You will administer Linux and Windows servers, manage virtualization, and ensure security compliance in classified and unclassified environments.

The role requires DoD TS/SCI clearance, 3+ years of experience, and IAT II certification. Responsibilities include troubleshooting, patching, backups, and cross-team coordination for mission-critical systems.

Qualifications

• Active DoD TS/SCI security clearance required.
• 3+ years of professional systems administration experience.
• IAT II certification per DoD directive (Security+ CE or equivalent).
• Experience administering Linux and/or Windows in enterprise/DoD environments.
• Knowledge of TCP/IP networking, DNS, DHCP, SSH, and server concepts.
• Experience with patching, configuration management, backups, and hardening.
• Ability to analyze problems, document actions, and provide solutions.
• Strong written and verbal communication skills.

Responsibilities

• Administer, configure, maintain, and troubleshoot Linux and Windows servers and workstations.
• Install OS, software, patches, and security fixes per change-control procedures.
• Monitor health, capacity, performance, and recommend improvements.
• Provide Tier II/III troubleshooting for hardware, OS, virtualization, networking, and connectivity.
• Manage user accounts, permissions, and security configurations.
• Support systems across classified and unclassified networks and data-transfer processes.
• Maintain backups, recovery procedures, inventories, and SOPs.
• Apply STIGs and DoD security controls; assist with vulnerability remediation (ACAS/Nessus).
• Support VM infrastructure and virtualization as needed (VMware or equivalent).
• Coordinate with cybersecurity, network, support teams; document incidents and resolutions.
• Participate in maintenance, testing, exercises, and after-hours support; share knowledge and improve processes.

Skills

DoD TS/SCI clearance

3+ years systems administration

IAT II certification (Security+ CE or

Education

Bachelor’s degree in IT / CS / cybersecurity / related field

Tools

VMware vSphere

ACAS/Nessus

STIG Viewer

HBSS

Python

PowerShell

Job description

Delaware Nation Industries is seeking a System Administrator – Mid to support the Air Force JWICS/JITS mission. You will administer Linux and Windows servers, manage virtualization, and ensure security compliance in classified and unclassified environments.

The role requires DoD TS/SCI clearance, 3+ years of experience, and IAT II certification. Responsibilities include troubleshooting, patching, backups, and cross-team coordination for mission-critical systems.