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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr Principal Linux Systems Administrator - Top Secret - **Company:** Northrop Grumman - **Location:** Azusa, CA, United States (Remote available) - **Experience:** Expert - **Salary:** $129,300.0 - $193,900.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Apple Mac Systems, Audit Trail, Microsoft Azure, Bash Shell, Unix, Cloud Computing, Configuration Management, Cyber Security, Information Systems, Linux, VMware ESX Servers, File System Permissions, Subnetting, Python (Programming Language), Kernel-Based Virtual Machine, Linux System Administration, Linux Distribution, Routing, Citrix Systems, Quick EMUlator (QEMU), Red Hat Enterprise Linux, Ansible, SAP (Applications), Server Administration, Software Systems, Solaris (Operating System), VCloud, Virtual Local Area Networks, Virtualization Technology, VMware VSphere, Xen Servers, Cloud Platform System, Containerization, Kubernetes, Information Technology, SolarWinds (Software), Rancher, National Industrial Security Program Operating Manual (NISPOM), Splunk, Docker - **Published:** October 19, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=89895649c31443d3 ## About the Role * Master's Degree with 6 years of IT experience; OR a Bachelor's Degree with 8 years of IT experience; OR an Associate's Degree with 10 years of IT experience; OR a High School Diploma/GED with 12 years of IT experience is required * Linux Operating Systems workstation and server management support experience in a classified environment * Operating System Cross-platform awareness (i.e. two or more: Windows, Linux, Solaris, OSX, UNIX, etc.) * Candidates must meet the U.S. Government 8140 requirements (8570 equivalent) for a Linux/Windows Systems Administrator - IAT level II certification at a minimum (examples: Security+ CE, CND, CCNA Security, SSCP, GICSP, GSEC, CCISO) * Candidates must have a current U.S. Government Top Secret level security clearance (at a minimum) in order to be considered, * Bachelor's degree in Information Technology, and 10 years of Linux Server Administration experience in a classified environment * Active SCI, SAP/SAR access, or Polygraph * Security+ CE certification * Experience operating under and managing systems within NISPOM Chapter 8, DCID 6/3-ICD 503, RMF, STIG, JAFAN, or JSIG information system environments * Experience administering modern Linux distributions (RHEL 8/9, Rocky Linux, etc.) * Proficient in virtualization platforms (VMware vSphere/ESXi, Citrix XenServer, KVM/QEMU, etc.) * Advanced containerization skills (Docker, Docker Compose, etc.) and container security tools * Kubernetes orchestration (CNCF Kubernetes, Rancher, Kubernetes Dashboard, etc.) * Cloud platform integration (Azure CycleCloud, VMware Cloud Foundation, etc.) * Strong networking background (subnets, routing, VLANs, VTCs, cloud networking) * Monitoring and security tools support, such as Splunk and SolarWinds * Scripting and automation (Bash, Python, Ansible) * Cross-platform operations (Linux, Windows, UNIX, etc.) * Experience with the creation and deployment of system images in an enterprise environment * Experience with Assessment & Authorization process ## Description The Northrop Grumman Classified Solutions CIDO team is seeking a Sr. Principal Computer Systems Analyst - Senior Linux Systems Administrator to support information system lifecycle activities. The selected candidate will be required to work on-site, full-time at our Azusa, CA location. The responsibilities of this role include, but are not limited to, the following: * Perform as a lead Sr. Principal Computer Systems Analyst - Linux in support of classified government contracts. * Communicate effectively with all organizational levels, internal/external customers, vendors, and senior leadership, both verbally and in writing. * Oversee operations and administration of multi-user computer systems and multiple networks, coordinating with IT teams, project managers, and end users. * Analyze requirements, recommend, and implement hardware/software solutions; interact with vendors to evaluate and troubleshoot products and services. * Define, implement, and maintain enterprise-wide system enhancements, including installation, upgrades/patches, monitoring, configuration management, and problem resolution. * Design and develop backup strategies to include backup and disaster recovery frameworks for critical systems. * Establish and enforce procedures for account management, file permissions, and security access. * Lead testing, validation, and change management for major product releases across platforms. * Develop, publish, and continuously improve technical standards and SOPs. * Ensure compliance with Information Systems security guidelines; prepare and maintain security documentation, audit logs, and Assessment & Authorization (A&A) submissions; serve as senior liaison to the ISSM. * Report on strategic initiatives and project status to executive stakeholders; act as a key technical advisor impacting enterprise-wide, mission-critical systems. * Acts as a key technical advisor to senior leadership; impacts multiple programs and mission-critical systems across the enterprise. * Provide senior-level technical expertise by mentoring junior and experienced team members, fostering their professional growth and enhancing team capabilities. * Lifts and moves equipment up to 50 pounds. * Work after hours, and weekends, as needed. Note: Due to the classified nature of the work being performed, this position does not offer any virtual or telecommute working options. Applicants are encouraged to apply, only if they are willing to work on-site.