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# Staff Systems Administrator - Active Polygraph Required

- **Company:** Northrop Grumman
- **Location:** Aurora, CO, United States
- **Experience:** Expert
- **Salary:** $177,000.0 - $265,600.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Antivirus Softwares, Configuration Management, Cyber Security, Information Systems, Linux, RAID, File Systems, VMware ESX Servers, File System Permissions, Identity and Access Management, IT Management, Networking Hardware, Windows Servers, NetApp Applications, Data ONTAP (Server Appliance), Red Hat Enterprise Linux, Information Technology Security Auditing, Server Administration, Microsoft SharePoint, Single Sign-On, Data Logging, Storage Devices, Information Technology, Iptables, Nessus, Wikis, Splunk, Cisco, Vmware
- **Published:** June 20, 2026
- **Apply:** https://www.clearancejobs.com/jobs/8946089/staff-systems-administrator-active-polygraph-required

## About the Role

* Staff: Bachelor's degree with 12 years of IT experience; Master's degree with 10 years of IT experience; Associate degree with 14 years of IT experience; OR a HS Diploma / GED with 16 years of IT experience is required
 * Candidate must have active/current Top Secret/SCI clearance with adjudicated Full Scope Polygraph at time of application
 * Must have server administration experience with Linux (RedHat Enterprise Linux is preferred) and Windows
 * Perform administration on VMware technologies (or related)
 * Must have a DOD 8570 IAT Level 2 baseline certification (example: Security+ CE); OR must have the ability to obtain one within 6 months of start date.
 * Experience with NAS storage device (preferably NetApp) administration (ONTAP 8.x or higher; CDOT)
 * Ability to lift equipment weighing up to 40 pounds.
 * Ability to support after hours and on weekends as needed
 * Ability and willingness to travel 15%, * Higher degree in a STEM-related discipline
 * Network hardware and configuration
 * 5+ years of experience with Red Hat Enterprise Linux (RHEL) server administration in an SCI classified environment
 * Experience operating under and managing systems within NISPOM Chapter 8, DCID 6/3-ICD 503, RMF, STIG, JAFAN, or JSIG information system environments
 * Solid understanding of Enterprise-level storage concepts to include all commonly used RAID-levels
 * Solid understanding of remediating security vulnerabilities; Experience hardening Linux systems in accordance with RMF and STIGs
 * Identity Management (Single Sign-On) experience
 * VMware and ESXi (6.x or higher) configuration and management experience
 * Experience with host-based firewall implementations and configuration (Redhat "iptables")
 * Windows 10 administration experience; Windows Server experience; Group Policies (GPOs) experience; Active Directory management experience
 * Solid writing skills and use of Wiki pages and Sharepoint sites for documentation
 * DoD 8570 Certification in a primary OS (Windows, Linux, Cisco)
 * Currently valid Security+ CE, CASP, CISSP, or similar security certification
 * Experience in VMWare, NetApp and Splunk among other industry standard technologies. Comfortable with maintenance and OS upgrades
 * Preferred candidate will be familiar with Tenable and Nessus scans for vulnerability and controls implementation.

## Description

* Perform as a Linux and Windows System Administrator on large government contracts.
 * Perform administration on VMware technologies (or related)
 * Experience with all aspects of NAS Storage
 * Maintain smooth operation of multi-user computer systems, including coordination with network, software, and system engineers, PC desktop technicians, project managers, end users, and customer and IT management.
 * Recommend and implement system enhancements that will improve the performance and reliability of the system including installing, upgrading/patching, monitoring, problem resolution, and configuration management.
 * Provide backup and recovery services; manage file systems and disk space; manage virus protection on a routine basis.
 * Create and maintain user and computer accounts and modify file permissions and security access lists.
 * Maintain security audit and logging information on all classified networked and standalone computers as directed by the Information Systems Security Manager (ISSM).
 * Support the Cyber Security team.
 * Report on project status as required for all recurring and non-recurring efforts.


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