Senior Systems Administrator

AMERICAN SYSTEMS

full-time

Posted on: 9/21/2025

Origin: • 🇺🇸 United States • California

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💰 $91,600 - $153,000 per year

Senior

AnsibleDockerKubernetesLinuxUnix

About the role

Installing, configuring and managing the Linux operating systems and related toolsets
Gathering requirements, developing and conducting design reviews
Maintaining servers to be compliant per NAVAIR and DISA policies
Functional knowledge of backup and disaster recovery technologies
Strong understanding of system security principles and experience executing hardening techniques
Documentation – updating and maintaining documentation and knowledge base, including system descriptions, procedures, events and processes
Building new infrastructure servers
Maintaining, administering and patching systems for optimum performance and security
Migrating or updating systems
Participating in weekly routine maintenance tasks
Responding to system failures promptly to bring applications back online
Installing and troubleshooting common industry COTS and GOTS applications
Performing Continuous Monitoring actions for systems and infrastructure including scanning, DoD STIG application and other Cyber compliancy actions
Work in an Agile scrum methodology to track and report on tasking
Work in a secure Classified environment supporting various DoD software development platforms

Five (5) years' or more of hands-on experience working with UNIX/Linux and Windows
Experience in DoD Information Assurance/Cyber policy and procedures to include hardening of systems, implementing Security Technical Implementation Guides (STIGs) and scanning
Experience with Linux Server build, maintenance, and troubleshooting, addressing service requests, routine server maintenance (firmware, failures, hardening, etc.), and server consolidation
Experience with UNIX/Linux, Red Hat, CentOS (Linux)
DoD 8140 & 5239 compliant (Security + certified and OS certificate/certification) (formerly 8570)
Working knowledge of supporting software development
Critical thinking skills and the ability to “think-outside-the-box” to solve complex technical issues
Candidate must have a current Secret Clearance
Must have ability to obtain a Top Secret, Interim Top Secret required to start
Must be a US Citizen
Background or working knowledge of scripting and automation tools
Desired: Familiarity with containerization concepts and tools
Desired: Understanding of container orchestration and management (Kubernetes, Docker Swarm)
Desired: Experience with CI/CD pipelines for containerized applications
Desired: Experience with Ansible