Windows & Linux System Administrator with Security Clearance

Zachary Piper Solutions is seeking a Windows & Linux System Administrator to support the Research, Development, Test, and Evaluation (RDT&E) network and secure enclaves supporting NIWC Pacific in San Diego, California . This onsite position is responsible for maintaining and securing existing infrastructure while supporting the design, engineering, and deployment of new capabilities within a mission-critical environment. As a Windows & Linux System Administrator, you will play a key role in administering and securing Windows and Red Hat Enterprise Linux systems, implementing automation, ensuring compliance with DoD security requirements, and supporting infrastructure modernization efforts.

Key Responsibilities
* Administer and maintain Windows 11 and Red Hat Enterprise Linux (RHEL) systems.
* Develop, maintain, and utilize Power Shell and Bash scripts to automate system administration tasks.
* Provide technical engineering support and participate in infrastructure design reviews for existing and future environments.
* Harden operating systems and servers in accordance with DISA STIGs , CTOs, and other DoD cybersecurity guidance.
* Implement automation solutions using Ansible playbooks .
* Support vulnerability remediation efforts, including patching and compliance activities.
* Maintain and update asset tracking databases.
* Collaborate with team members to develop and improve standard operating procedures (SOPs).
* Assist with obtaining vendor quotes and procuring infrastructure assets.
* Coordinate shipment and delivery of equipment to remote teams and locations.
* Support the security and operational readiness of mission-critical environments. Requirements
* Active Secret Clearance .
* One DoD 8570/8140 IAT Level II certification, including:
* Security+ CE
* GIAC Security Essentials Certification (GSEC)
* Security Certified Network Professional (SCNP)
* System Security Certified Practitioner (SSCP)
* 3+ years of experience administering Windows systems.
* 3+ years of experience administering RHEL systems.
* Experience developing and using Power Shell and Bash scripts.
* Experience with the IAVM process, including STIG implementation and patch management.
* Strong troubleshooting and system administration skills. Desired Qualifications
* Additional Windows and RHEL enterprise administration experience.
* Experience developing and maintaining Ansible automation playbooks.
* Experience supporting endpoint security technologies.
* Familiarity with DoD cybersecurity compliance requirements and secure enclave environments. Compensation:
* Salary Range: $110,000 - $115,000 depending on experience
* Full Benefits Include:

* Medical Insurance
* Dental Insurance
* Vision Insurance
* 401(k)
* Paid Time Off (PTO)
* Sick Leave (where required by law) This job opens for applications on 8/18/2026. Applications for this position will be accepted for at least 30 days from the posting date. #LI-CB1 #LI-ONSITE &E, Network Security, Vulnerability Management, Systems Engineering, Navy, NIWC