Principal System Administrator

Job summary

Raytheon is seeking a Principal System Administrator to support Windows and Linux enterprise environments. This role involves designing, implementing, maintaining, patching, and troubleshooting various systems within a large-scale, mission-critical environment. The successful candidate will collaborate with various teams to define computing requirements and create end-to-end solutions for complex IT infrastructure problems.

Benefits

Qualifications

• University degree or equivalent experience and a minimum of 5 years of prior relevant experience, or an Advanced Degree in a related field and minimum 3 years experience.
• Active and transferable U.S. government issued secret security clearance is required prior to start date.
• U.S. citizenship is required.
• Experience administering and securing Windows and/or RHEL servers.
• Experience with VMware virtualization, securing system configurations, and system hardening.
• Experience with PowerShell scripting.
• Experience serving as a technical SME or primary point of contact for patching, vulnerability remediation, or compliance initiatives.
• Hands-on experience with MECM/SCCM, PXE boot services, OS imaging, and automated software deployment frameworks.
• Familiarity with NetApp storage and/or HPC environments.
• Experience with enterprise Windows services, including Active Directory, Group Policy, and identity integration.
• Familiarity with cybersecurity and compliance tooling, such as ACAS, SCAP, Splunk, STIG Viewer, and audit support processes.
• Experience supporting or integrating with DevSecOps environments, including Kubernetes, Rancher, and artifact repositories.
• Experience with SQL Server, including clustered configurations.
• Prior experience supporting DoD, defense, or highly regulated environments.

Responsibilities

• Serve as a Principal System 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.
• Perform Windows and Linux patching, vulnerability remediation, and compliance activities, including STIG/EVAL STIG implementation, SCAP/ACAS support, and log collection.
• Coordinate with Cyber Security teams to maintain continuous compliance with DoD and regulatory requirements.
• Design, deploy, and maintain virtual infrastructure using VMware ESXi and vCenter, including VM lifecycle management, host upgrades, and performance tuning.
• Support critical production workloads.
• 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.
• Administer and support core Windows services and integrations, including Active Directory, Group Policy, secure system configurations, certificate-based authentication, and customized user environments.
• Collaborate across Digital Technology, Engineering, Cyber Security, DevSecOps, Networking, Storage, and Tools teams to resolve complex infrastructure, integration, and compliance challenges.
• Operate independently with minimal oversight.
• Support both planned and emergent operational needs in a fully on-site DoD closed-area environment.
• Provide occasional after-hours support and up to 10% travel as required to meet program objectives.
• Work independently, prioritize competing demands, and execute with minimal direction in a fast-paced operational environment.

Skills

Degrees

Work schedule

Travel

Industry

Security clearance

Relocation