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Senior Linux/Unix Systems Administrator with Security Clearance

PeratonSan Diego, CA🇺🇸United StatesPosted Sep 30, 2026

Why This Role Stands Out

Leverage your expertise as a Senior Linux/Unix Systems Administrator to modernize critical US Navy missions, driving innovation in microservices and container orchestration with a competitive salary range of $104,000 - $166,000. This on-site role in San Diego offers a dynamic environment for problem-solvers who thrive on automation, security compliance, and impactful contributions within a trusted, mission-focused team.

Quick Overview

Salary
$104k - $166k/yr
Seniority
Mid Senior
Employment type
Employee
Work mode
On Site
Location
San Diego, CA, United States
Posted
Yesterday
ConfluenceJira

Job Description

About Peraton Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world's leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace.

The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees solve the most daunting challenges that our customers face. Visit peraton.com to learn how we're keeping people around the world safe and secure.

About The Role Peraton is seeking an enthusiastic and talented Senior Systems Administrator to build on ongoing modernization efforts for the US Navy with enabling microservices to be rapidly built, tested, fielded, and integrated to container orchestration platforms through heavy use of automation tools and security processes.

This hybrid support role (50% remote, 50% onsite at a government facility) in the San Diego area is for folks who like being close to the work-maintaining security compliance, automating infrastructure, fixing what slows teams down, and adapting when a program needs something different. We work in small-to-mid size, diverse teams with clear ownership of tasking. Engineers are trusted in solving problems and aren't waiting for permission to execute. U.S.

Navy warfighters need your help to rapidly deliver cutting edge software solutions to the fleet for planning and executing missions for carrier strike groups conducting operations around the world. Mission planners need to collaborate in order plan for anti-surface warfare, anti-submarine warfare, ballistic missile defense, autonomous drone swarm information gain, and a wide range of other mission areas. What you'll do: The Systems Administrator will be responsible for the following but not limited to:

  • System Administration & Security Compliance
  • Maintain system patches and operating system updates in accordance with Security Technical Implementation Guide (STIG) compliance.
  • Scan systems using ACAS and collaborate with the team to remediate vulnerabilities.
  • Enterprise IT & Cloud Management
  • Administer, monitor, troubleshoot, and maintain Linux and Windows-based workstations, enterprise IT servers, and virtualized environments (VMware, VirtualBox, Hyper-V).
  • Oversee the configuration, performance, and reliability of cloud-hosted EC2 implementing improvements to AWS and cloud infrastructures.
  • Containerization & Orchestration
  • Deploy and manage containerized applications using Kubernetes and other orchestration tools.
  • Utilize containers (e.g., Docker) and orchestration configurations (e.g., Helm) to support microservice architectures.
  • Collaboration & Problem Resolution
  • Work closely with application developers, operations teams, and subject matter experts to support production applications and mission-critical software systems.
  • Provide guidance, assistance, and coordination on complex issues to ensure timely resolution and seamless integration of system components.
  • Support new AA installs and troubleshoot issues with existing AA instances at secure labs, aboard ships, and other customer sites.
Qualifications What you will need:
  • Education & Certification:
  • BS in STEM (or equivalent) with 5 years of experience, MS in STEM (or equivalent) with 3 years of experience, or 0 years with PhD.
  • IAT Level II certified (e.g., CompTIA Security+).
  • Citizenship & Clearance:
  • Candidate must be a US Citizen.
  • Must live in the San Diego metro area.
  • Possess an active/current DoD Secret clearance.
  • Systems Administration Experience:
  • Hands-on experience with Linux operating systems (e.g., RHEL, CentOS, Ubuntu) and Windows Server environments (e.g., 2019, 2016).
  • Proven experience with virtualization (VMware, VirtualBox, Hyper-V) and cloud computing infrastructures (e.g., Amazon AWS, Microsoft Azure).
  • Experience in maintaining Information Assurance Compliance (STIGs, ACAS, ENS/HBSS) and performing server administration tasks (user/group management, security permissions, group policies).
  • DevOps & Automation Experience:
  • Demonstrated DevOps experience involving:
  • Containerization (e.g., Docker, Kubernetes, OpenShift, Rancher)
  • Container orchestration tools (e.g., Kubernetes, OpenShift, Helm)
  • Infrastructure-as-Code (e.g., Ansible, Vagrant, Terraform, CloudFormation)
  • CI/CD automation tools (e.g., GitLab, Jenkins, AWS Code Build, Azure Pipelines)
  • Proficiency in automation and scripting (e.g., Bash, Python, PowerShell) and working in headless RHEL environments.
  • Familiarity with cybersecurity practices (e.g. HBSS) as applied to DevSecOps processes. Desired Qualifications
  • Experience with DoD accreditation processes (A&A, RMF, ATO) and identity management administration (Active Directory, AWS IAM, OpenAM).
  • Knowledge of cloud infrastructure management tools (e.g., AWS Systems Manager, Azure Monitor).
  • Familiarity with cybersecurity tools (e.g., OpenSCAP, JFrog Xray, Coverity).
  • Proficiency with the Atlassian suite (JIRA, Confluence, Bitbucket) and test automation frameworks (e.g., Selenium, Cypress).
  • Experience configuring OIDC and OAuth applications is advantageous.

Details Target Salary Range: $104,000 - $166,000. This represents the typical salary range for this position. Salary is determined by various factors, including but not limited to, the scope and responsibilities of the position, the individual's experience, education, knowledge, skills, and competencies, as well as geographic location and business and contract considerations. Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay.

Benefits Statement: Peraton offers eligible employees a variety of benefits including medical, dental, vision, life, health savings account, short/long term disability, EAP, parental leave, 401(k), paid time off (PTO) for vacation, and company paid holidays. A full listing of available benefits can be viewed at https://www.careers.peraton.com/benefits.

Application Statements: The application period for the job is estimated to be 30 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates. By applying to this job, you are expressing interest in the role and the Company. During the review of your application, you may be required to participate in an on-camera interview, as well as participate in a process to verify your identity. Use of artificial intelligence (AI) tools of any kind during Peraton interviews is strictly prohibited unless the candidate has obtained prior written authorization. All interview responses must be the candidate's own.

EEO:Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law.

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