Sr. Linux Systems Administrator (TS/SCI CI Poly) with Security Clearance

Zachary Piper Solutions is seeking a Systems Administrator to support a complex, multi-site IT infrastructure based in El Segundo, CA. This role is centered around Red Hat Linux-based High-Performance Computing (HPC) clusters and includes support for secure lab environments, classified networks, and future integration of embedded Linux systems like VxWorks. Key Responsibilities: - Design and implement secure system architectures using best practices in software and systems engineering - Provide end-to-end IT support across desktops, servers, and virtualized environments - Manage system access, patching, and hardware/software release planning - Administer and maintain Linux (RHEL) and Windows systems - Troubleshoot complex system issues and automate tasks using scripting (e.g., PowerShell) - Support classified networks and ensure compliance with RMF/JSIG security standards - Integrate and maintain applications and infrastructure in secure environments Basic Qualifications: - Active TS/SCI with a CI Polygraph (CI Poly within the last 5 years) - 5 years of experience supporting lab/test environments and classified networks - Strong background in Linux and Windows OS installation, configuration, and troubleshooting - Hands-on experience with IT hardware, networking equipment, and HPC systems - The ability to stand up virtual Linux environments - Security certification (or ability to obtain within 6 months) Preferred Qualifications: - Deep experience with RHEL, Windows Server/Desktop, VMware, and Active Directory - Experience with Embedded Linux - Familiarity with Group Policy Objects (GPOs), PowerShell scripting, and Agile methodologies - Experience with system backups, patching, and COTS software - Knowledge of RMF/JSIG compliance and secure system integration Compensation: - Salary: $140,000 - $205,000 (based on experience and education) - Benefits: Comprehensive package including medical, dental, vision, 401(k), 20 days paid time off, 11 federal holidays, and sick leave

Location: El Segundo, California, US

Posted Date: 8/21/2025