Principal System Administrator

RTX RTX · Aerospace · tewksbury, MA +1 · Digital Technology

Principal System Administrator role supporting Windows and Linux enterprise environments for classified programs within RTX, focusing on design, implementation, maintenance, patching, vulnerability remediation, and compliance with DoD and regulatory requirements. Requires extensive experience with Windows/Linux server administration, VMware, PowerShell scripting, and a secret security clearance.

What you'd actually do

  1. Serve as a Principal Systems Administrator supporting Windows and Linux enterprise environments, responsible for the design, implementation, maintenance, patching, and troubleshooting of Windows Server, Windows 11, RHEL 7/8/9, and virtualized infrastructure within a large-scale, mission-critical environment operating 24x7x365.
  2. Experience with Windows and Linux patching, vulnerability remediation, and compliance activities, including STIG/EVAL STIG implementation, SCAP/ACAS support, log collection, and close coordination with Cyber Security teams to maintain continuous compliance with DoD and regulatory requirements.
  3. Design, deploy, and maintain virtual infrastructure using VMware ESXi and vCenter, including VM lifecycle management, host upgrades, performance tuning, and support of critical production workloads.
  4. Engineer and sustain enterprise imaging, deployment, and automation solutions, including MECM/SCCM, PXE, Windows imaging, in-place OS upgrades, and scripted software deployment using PowerShell and automation frameworks.
  5. Administer and support core Windows services and integrations, including Active Directory, Group Policy, secure system configurations, certificate-based authentication, and customized user environments.

Skills

Required

  • Windows and RHEL servers administration
  • VMware virtualization
  • Securing system configurations
  • System hardening
  • PowerShell scripting
  • Active Directory
  • Group Policy

Nice to have

  • MECM/SCCM
  • PXE boot services
  • OS imaging
  • Automated software deployment frameworks
  • NetApp storage
  • HPC environments
  • ACAS
  • SCAP
  • Splunk
  • STIG Viewer
  • audit support processes
  • DevSecOps environments
  • Kubernetes
  • Rancher
  • artifact repositories
  • SQL Server
  • clustered configurations
  • DoD, defense, or highly regulated environments

What the JD emphasized

  • Active and transferable U.S. government issued secret security clearance is required prior to start date.
  • U.S. citizenship is required
  • fully on-site DoD closed-area environment