System Administrator - 306506 with Security Clearance

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

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.

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.

Benefits

• Covers 100% of employee benefit premiums, including Medical (PPO or HDHP Option), Vision, Dental
• Matching 401K
• Short- and Long-Term Disability
• Pet Insurance
• Professional Development/Education Reimbursement
• Parking and Transit Benefits for NY, NJ, ATL, and DC Metro areas

Salary Compensation: $105,000-$115,000

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans