# System Administrator

**Company:** [Delaware Nation Industries](http://jobs.workable.com/companies/42d4uXfwWwix8QWXMoUPZe.md)
**Location:** Dahlgren, United States
**Workplace:** on site
**Employment type:** Full-time
**Department:** Delaware Nation Investments

[Apply for this job](http://jobs.workable.com/view/24c400a6-306e-4468-bdcc-d9c8eb4581a1)

## Description

Delaware Nation Industries is seeking a System Administrator – Mid to support the Air Force Joint Worldwide Intelligence Communications System/Joint Interoperability Test and Services mission. The System Administrator will provide day-to-day administration, maintenance, monitoring, troubleshooting, and security support for enterprise systems operating across classified and unclassified environments.

The successful candidate will work as part of a collaborative systems administration team supporting Linux and Windows platforms, virtualized infrastructure, network-connected services, and mission-critical users. This position requires sound technical judgment, strong documentation skills, and the ability to troubleshoot issues while maintaining system availability and compliance with DoD security requirements.

### Responsibilities

-   Administer, configure, maintain, and troubleshoot Linux and Windows servers, workstations, applications, and related computing environments.
-   Install operating systems, software, patches, updates, and security fixes in accordance with approved change-control and maintenance procedures.
-   Monitor system health, availability, capacity, and performance; identify trends and recommend corrective actions.
-   Perform Tier II and Tier III troubleshooting for hardware, operating system, application, virtualization, networking, and connectivity issues.
-   Manage user accounts, permissions, groups, access controls, and system configurations in accordance with security policies.
-   Support systems operating across classified and unclassified networks, including mission-essential environments and controlled data-transfer processes.
-   Perform or support electronic and manual data transfers between authorized network environments.
-   Maintain system backups, recovery procedures, configuration records, inventories, and standard operating procedures.
-   Apply DISA Security Technical Implementation Guides (STIGs), vulnerability-remediation procedures, and other applicable DoD security controls.
-   Support vulnerability scanning and remediation activities, including review and correction of findings from tools such as ACAS/Nessus when assigned.
-   Assist with system builds, provisioning, integration, software installation, upgrades, and restoration activities.
-   Support virtual machines and virtualized infrastructure, including VMware or comparable technologies.
-   Coordinate with cybersecurity, network, service desk, application, and Government teams to resolve incidents and maintain continuity of operations.
-   Document incidents, changes, troubleshooting actions, and resolutions in the designated IT service-management or configuration-management system.
-   Participate in scheduled maintenance, testing, exercises, and after-hours or on-call support as required by the contract.
-   Cross-train with other administrators and contribute to knowledge transfer, technical documentation, and process improvement.

## Requirements

### Required Qualifications

-   Active DoD TS/SCI security clearance.
-   At least three (3) years of professional systems administration experience.
-   DoD 8570/8140-compliant IAT II certification, such as Security+ CE or another current DoD-approved equivalent.
-   Demonstrated experience administering Linux and/or Windows operating systems in an enterprise or DoD environment.
-   Working knowledge of TCP/IP networking, DNS, DHCP, SSH, file and print services, and common server-support concepts.
-   Experience with system patching, configuration management, backups, troubleshooting, and security hardening.
-   Ability to analyze technical problems, identify root causes, and implement effective solutions with appropriate documentation.
-   Strong written and verbal communication skills and the ability to work effectively independently and on a small technical team.
-   Ability to support classified systems in accordance with applicable security, access-control, and operational procedures.

### Preferred Qualifications

-   Experience supporting Air Force, JWAC, JITS, intelligence, or other DoD mission environments.
-   Experience with Red Hat Enterprise Linux, CentOS, Debian, or comparable Linux distributions.
-   Experience with VMware vSphere, virtual machine provisioning, or virtual infrastructure operations.
-   Familiarity with ACAS/Nessus, STIG Viewer, HBSS/endpoint security tools, or comparable DoD cybersecurity tools.
-   Experience with scripting or automation using Python, Bash, PowerShell, Ansible, Puppet, or similar technologies.
-   Familiarity with SAN/NAS storage, NFS, iSCSI, VDI, load balancing, or cross-domain/data-transfer systems.
-   ITIL, Linux, VMware, or related industry certification.
-   Bachelor’s degree in information technology, computer science, cybersecurity, engineering, or a related field; equivalent experience may be considered.

### Other Duties

This job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities required of the employee. Duties, responsibilities, and activities may change at any time with or without notice.