Principal Linux & Windows System Administrator

Responsibilities

• Provide IT systems administration in a heterogeneous Microsoft Windows and Red Hat Enterprise Linux (RHEL) environment.
• Support Linux server internals and Windows fundamentals, including DNS, DHCP, AD, and server replication methods.
• Troubleshoot technical problems of moderate to high complexity, including hardware and operating system integration.
• Manage data RAID and data backup technologies.
• Collaborate with Cybersecurity professionals to maintain security requirements and provide technical documentation.
• Install and configure software applications as requested by end users.
• Maintain 24x7 operational readiness for critical systems.

Requirements

• Active and transferable U.S. government issued Top Secret security clearance required on day 1.
• U.S. citizenship is required.
• University Degree or equivalent experience with a minimum of 5 years of relevant experience (or an Advanced Degree with 3 years of experience).
• Proven experience with Linux operating systems.
• Experience supporting Microsoft Windows Server and client operating systems.
• Experience with virtualization technologies such as VMware vCenter, vSphere, VDI (Horizon), or ESX.
• Proficiency in scripting.
• Ability to obtain DoDD 8140 / 8570 Certification (e.g., CompTIA Security+ CE) within 6 months of start date.

Preferred Qualifications

• Experience with containerization technologies like OpenShift, Kubernetes, Docker, Tanzu, or Rancher.
• Experience with CI/CD tools such as GitLab, Jenkins, or Azure DevOps.
• Knowledge of NISPOM, JAFAN, JSIG, DFARS, and/or DoD/RMF.
• Experience with Privileged Access Management (PAM) solutions such as Centrify.
• Experience supporting engineers in software, simulations, and hardware development.

About the Company

RTX is a global aerospace and defense leader, uniting great minds to solve the world's most complex problems. Through our market-leading businesses, we push the boundaries of science to connect and protect our world, delivering critical solutions that help nations defend freedoms and stay ahead of emerging threats.