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# Windows and Linux System Administrator

- **Company:** Seneca Resources
- **Location:** San Diego, CA, United States
- **Experience:** Experienced
- **Salary:** $105,000.0 - $115,000.0
- **Contract:** Temporary contract
- **Skills:** Microsoft Windows, Bash Shell, Cyber Security, Databases, Linux, Windows PowerShell, Red Hat Enterprise Linux, Ansible, SC Clearance
- **Published:** August 19, 2026
- **Apply:** https://public-rest40.bullhornstaffing.com/rest-services/R0SYP/query/JobBoardPost?where=id=47839&fields=id,title,publishedCategory(id,name),address(city,state),employmentType,dateLastPublished,publicDescription,isOpen,isPublic,isDeleted

## About the Role

* Active Secret clearance
 * IAT Level II certification required: Security+ CE, GSEC, SCNP, or SSCP
 * 3+ years of experience administering Windows 11 systems
 * 3+ years of experience administering Red Hat Enterprise Linux (RHEL) systems
 * Proficiency developing and executing PowerShell and Bash scripts
 * Experience with the IAVM process including STIGs and patch compliance
 * Familiarity with DISA hardening standards including STIGs and CTOs
 * Experience maintaining asset tracking databases and developing SOPs
 * Ability to support equipment procurement and coordinate shipping to remote teams

Desired Skills:

 * Automation experience using Ansible playbooks
 * Experience with endpoint security tools and solutions
 * Strong communication and collaboration skills in a team-based environment

## Description

Seneca Resources is hiring a Windows and Linux Systems Administrator to support a critical Research, Development, Test, and Evaluation (RDT&E) network and secure enclaves for a federal defense client in San Diego. This is a fully onsite role where you will play a key part in maintaining secure infrastructure, hardening systems to federal standards, and contributing to the design and engineering of new capabilities in a classified environment.


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