Principal Systems Administrator

Date Posted:

2026-07-27

Country:

United States of America

Location:

US-TX-MCKINNEY-513WC ~ 2501 W University Dr ~ WING C BLDG

Position Role Type:

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

Active and transferable U.S. government issued security clearance is required prior to start date.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance​

Security Clearance Type:

DoD Clearance: Secret

Security Clearance Status:

Active and existing security clearance required on day 1

At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. 

Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

What You Will Do:

The candidate’s day-to-day activities include but are not limited to: Windows server management; storage management; file server management; access management; data backup; software and license configuration; and workstation support.  Each day in the life of a Systems Administrator can bring something new – building a new IT infrastructure for a group of engineers, restoring files due to an outage, updating virus definitions and security patches, teaming with our brilliant engineers on how to improve their processes, and more.

What You Will Learn

You will provide System Administration in a heterogeneous Microsoft Windows (Primary OS) environment.

Understanding and knowledge of Windows Server internals to include DNS, DHCP, AD, and Windows integration methods. 
Working as a team member in a fast-paced technological environment.  Use troubleshooting techniques to resolve technical problems of a moderate to high scope and complexity to include the integration of hardware and operating systems (OS).
Understanding of data RAID, data backup uses and technologies. Install and configure software applications requested by end users.
Work with Cybersecurity professionals to maintain security requirements.
Must be able to obtain Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements within 6 months of start date.
This position has the potential to work off hours and weekends.

Qualifications You Must Have:

• Typically requires a 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, as only U.S. citizens are eligible for a security clearance.

• Experience with Windows deployment, administration, performance monitoring/tuning, security hardening, and troubleshooting.

Qualifications We Prefer:

• An active DoD Secret or Top Secret clearance

• Experience with infrastructure backup, restore, disaster recovery and business continuity products

• Scripting Experience

• Experience using tools like SCAP and following STIGs.

• Experience with Linux architecture, deployment, administration, performance monitoring/tuning, security hardening, and troubleshooting.

What We Offer:

Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Trust, Respect, Accountability, Collaboration, and Innovation.

Learn More & Apply Now!

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.

The salary range for this role is 86,800 USD - 165,200 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several fa