Senior Linux Systems Engineer - DoD DevSecOps & Automation

DNI (Delaware Nation Industries); Dahlgren (VA); On-site; USD 120,000 - 125,000; Full time

Benefits offered by this job

Medical premiums paid

401K match

Disability insurance

Pet Insurance

Education reimbursement

Parking & transit

Job summary

Delaware Nation Industries seeks a Senior Linux System Administrator to oversee advanced Linux infrastructure across classified and unclassified DoD environments. You will be the technical authority on Linux, virtualization, security, and lifecycle management, leading efforts and coordinating with Government stakeholders.

The role requires independent problem solving, strong scripting/automation capabilities, and mentoring mid-level staff while ensuring mission-critical operations remain secure

Qualifications

• Active DoD TS/SCI security clearance
• 6+ years Unix/Linux admin experience
• DoD 8570/8140 IAT III cert (CISSP/CASP+ or equivalent)
• Experience administering enterprise Linux in DoD/regluated env
• Strong Linux architecture, networking, storage
• Automation via Bash/Python/Ansible/Puppet

Responsibilities

• Administer, engineer, and maintain enterprise Linux systems across security levels
• Install, patch, harden, upgrade Linux OS and services
• Support Red Hat Enterprise Linux and related distributions
• Develop repeatable system-build and patching procedures
• Analyze complex system and network issues and root-cause分析
• Monitor availability, security posture, and performance
• Administer VMware and virtualized infrastructure
• Develop automation scripts to improve efficiency
• Support DevSecOps and controlled deployments
• Apply DISA STIGs and vulnerability remediation
• Execute ACAS/Nessus scans and compliance reporting
• Maintain secure access and certificates
• Support storage, backups, and data transfers
• Coordinate with teams for incident resolution
• Produce system documentation and diagrams
• Provide technical leadership and mentoring
• Coordinate cross-team resolution of escalated incidents
• Participate in maintenance and on-call support

Skills

Unix/Linux

Security clearance

Shell scripting

VMware

DoD cybersecurity

Education

Bachelor's degree in IT/CS/Engineering

Tools

Ansible

Puppet

Git

Docker

VMware vSphere

Job description

Delaware Nation Industries seeks a Senior Linux System Administrator to oversee advanced Linux infrastructure across classified and unclassified DoD environments. You will be the technical authority on Linux, virtualization, security, and lifecycle management, leading efforts and coordinating with Government stakeholders.

The role requires independent problem solving, strong scripting/automation capabilities, and mentoring mid-level staff while ensuring mission-critical operations remain secure