Sr Linux System Engineer Jobs (NOW HIRING)

Senior Systems Administrator / Senior Linux Automation Engineer

Location: Pensacola, FL

Must have an active Secret Clearance /Top Secret clearance

Node.Digital supports a U.S. Government customer on a mission critical program to design, build, deliver, and operate a next generation network operations environment. As part of CISA IT's broader consolidation and modernization vision, this role contributes directly to the establishment of a centralized patching core team-a strategic initiative to standardize, streamline, and fortify patch management across multi cloud Linux environments.

We are seeking a Senior Linux Automation Engineer with strong automation, DevOps, and cloud integration experience to help shape and execute this forward leaning effort. This position plays a key role in enhancing cybersecurity posture, improving operational efficiency, and driving consistent, proactive patching practices across DOMino CISA IT systems.
Job Responsibilities:
Standardize patch processes across CISA environments
Prioritize critical updates aligned with CISA IT cybersecurity objectives
Integrate automation and intelligent systems to reduce manual effort
Strengthen collaboration between DOMino teams, government sponsors, and tenants
Improve transparency, metrics, and operational agility
leverage deep technical expertise to automate patch deployment and optimize system performance
support multicloud environments while contributing to the development of enterprisewide patching standards and best practices
Engineer and maintain Linux system architectures (primarily RHEL 8/9/10
Perform OS security hardening, patching, and lifecycle maintenance
Manage backup, recovery, and configuration documentation to ensure system integrity
Engineer the design and implementation of standardized patching methodologies across AWS, AZURE, Google Cloud environments
Automate patch identification and deployment using tools such as Ansible and other IaC frameworks
Prioritize and execute critical updates in alignment with CISA IT Patch Management Guidelines
Assist in baseline assessments to identify process gaps, inefficiencies, and automation opportunities
Participate in efforts to refine patching workflows, metrics, and operational processes.
Integrate AWS, AZURE and Google native services to enhance performance, resilience, and scalability of patching and DevOps infrastructure
Evaluate and implement AI capabilities to automate patch management processes
Contribute to enterprise cloud and DevOps standards, guidelines, and best practices
Serve as a central conduit between DOMino teams, government sponsors, and tenants during patching cycles
Establish and track metrics such as patch compliance, deployment timelines, and automation achievements
Participate in weekly/biweekly reviews to ensure alignment with evolving operational priorities
Support iterative improvements based on stakeholder feedback and operational data.

Requirements

Required Skills:
Must be a US Citizen
Must have an active Secret clearance and be able to obtain a TS/SCI clearance
Must be able to obtain DHS Suitability
6+ years of Linux systems engineering experience (RHEL 8/9/10 preferred
Strong background in Linux Engineering and Automation
Experience with performance tuning and troubleshooting across compute, network, and storage layers
Handson experience with Red Hat Satellite, Ansible, or similar configuration management tools.
Desired Skills:
Experience with Infrastructure as Code (Ansible Automation Platform
Experience in development environments
Experience with SELinux, multilevel security systems, or Cross Domain Solutions
AWS, AZURE, Google experience, including understanding of the WellArchitected Framework; AWS, AZURE or Google Cloud certification preferred
Required Education: 
Bachelor's degree in systems engineering, Computer Science, Information Systems or related technical field.   Two years of related work experience may be substituted for each year of degree level education.
Desired Certifications:
DoD 8570.1 IAT Level II
Red Hat Certified Engineer (RHCE)
Managing Automation with Ansible Automation Platform

Benefits

We are proud to offer competitive compensation and benefits packages to include

• Medical 
• Dental
• Vision
• Basic Life 
• Health Saving Account
• 401K matching
• Three weeks of PTO/Sick
• 11 Paid Holidays
• Pre-Approved Online Training