Principal Linux Systems Administrator / Sr. Principal Linux Systems Administrator (aht)

Northrop Grumman Northrop Grumman · Aerospace · Redondo Beach, CA +1 · Networks

Northrop Grumman is seeking a Principal or Senior Principal Linux Systems Administrator to manage and maintain Linux-based systems for an Army Air Defense System. Responsibilities include system administration, configuration, patching, troubleshooting, and collaboration with engineering teams. A Secret clearance is required.

What you'd actually do

  1. Administer, monitor, and maintain Linux-based systems in lab and development environments, including configuration, patching, and troubleshooting
  2. Load, customize, and harden Linux development workstations and servers to meet program security and performance requirements
  3. Troubleshoot and repair hardware problems, including diagnosing faulty components and coordinating repair or replacement
  4. Respond rapidly to high priority incidents, diagnose root causes across OS, network, and hardware layers, and restore service for critical lab environments
  5. Collaborate closely with software developers and other engineering teams to support build environments, development workflows, and OS-related issues

Skills

Required

  • Linux system administration (Red Hat or similar enterprise distributions)
  • Installing, configuring, and troubleshooting Linux operating systems, software, servers, and associated lab hardware
  • Managing user accounts, groups, and file system permissions
  • Troubleshooting operating systems, networks, and hardware issues
  • OS level package management
  • Building and maintaining custom RPMs
  • Handling kernel/driver interactions
  • Conducting performance tuning in Linux environments
  • Scripting (e.g., shell scripting) for system configuration, automation, and maintenance tasks
  • Demonstrated ability to work collaboratively with engineers and technical leads on schedule driven programs
  • DoD Secret clearance

Nice to have

  • Familiarity with virtualization platforms (e.g., VMware)
  • Applying security patches and updates to virtualized environments
  • Experience supporting backup and restore solutions
  • Experience with vulnerability scanning and security compliance
  • Applying OS/security patches
  • Managing patch repositories
  • Maintaining antivirus tools
  • Supporting build and deployment environments
  • Maintaining build scripts and installation media for development environments
  • Current DoD Secret clearance

What the JD emphasized

  • DoD Secret clearance