Sr. Principal Systems Administrator - R10213683

Job Title

Sr. Principal Systems Administrator - R at Northrop Grumman

Location: Aurora, CO

Relocation assistance: May be available

Clearance type: Polygraph

Travel: Yes, 25% of the time

At Northrop Grumman, we provide incredible opportunities to work on revolutionary systems that impact people’s lives worldwide. As part of Northrop Grumman Space Systems (NGSP), the Sr. Principal Systems Administrator will support the Integrated National Systems (INS) Business Unit in Aurora, CO.

• Perform as a Linux and Windows System Administrator, building environments from scratch.
• Conduct administration on VMware technologies (or related).
• Manage all aspects of NAS Storage.
• Maintain smooth operation of multi‑user computer systems, coordinating with network, software, and system engineers, PC desktop technicians, project managers, end users, and IT management.
• Recommend and implement system enhancements to improve performance and reliability, including installation, 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.

• Bachelor’s degree with 8+ years of relevant experience; OR Master’s degree with 6+ years of experience; OR PhD with 4+ years of experience.
• Active TS/SCI clearance with CI Poly required at the time of application.
• Must have server administration experience with Linux RHEL 7x – 9x and Windows Server 2022 and above and Windows workstation 10 and above.
• Perform administration on VMware technologies (or related).
• Ability to lift equipment weighing up to 40 pounds.
• Ability to support after hours and on weekends as needed.
• Ability to follow complex install and configuration procedures and update them to reflect new technology when applicable.

• Network hardware and configuration on a planning and basic level, rack elevations and planning.
• 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 (7.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.
• Experience in VMware, Net App 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.

Primary level salary range: $ – $

Employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions and allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. We provide a variety of benefits including health insurance coverage, life and disability insurance, savings plan, company‑paid holidays and paid time off (PTO) for vacation and/or personal business.

Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit  U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.