Windows System Administrator - Top Secret clearance

RTX; Plano (TX); On-site; USD 96,000 - 182,000; Full time

Job summary

RTX, a leader in aerospace and defense, seeks an experienced IT Systems Administrator in Plano, TX. The role requires a Top Secret clearance and U.S. citizenship. You will administer Windows and Linux systems, manage AD/Exchange/WSUS, and work with Cybersecurity to uphold security standards.

Expect 24x7 operations, potential travel within the US, and on-site collaboration in a fast-paced team. A DoDD 8140/8570 certification is required within 6 months.

Qualifications

• Requires university degree or equivalent experience with 5+ years in IT systems administration.
• Active and transferable DoD Top Secret clearance required before start date; U.S. citizenship required.
• Experience with Windows OS and Windows Server administration including AD/Exchange/WSUS.
• Must obtain DoDD 8140/8570 certification (Security+ CE or equivalent) within 6 months.

Responsibilities

• Provide IT systems administration in Windows and RHEL environments.
• Collaborate in a fast-paced team to troubleshoot moderate to high complexity issues.
• Manage Windows Enterprise environments including security hardening and automation.
• Maintain compliance, monitor security, and respond to threats with Ivanti, Splunk, Tenable, SEP.
• Handle DNS, DHCP, AD, server replication; perform kernel tasks like patching and backups.
• Install and configure software; work with Cybersecurity to meet security requirements.
• Create, update and maintain IT documents and artifacts; on-call 24x7 as needed.
• Travel up to 10% to other US domestic locations; 100% onsite position.

Skills

Windows OS

Windows Server admin

Active Directory

Exchange

WSUS

Server Virtualization

Group Policy

Backup and Recovery

Security+ / DoD 8140/8570

Cybersecurity tooling

Education

University degree or equivalent experience

Advanced Degree in related field

Tools

Ivanti

Splunk

Tenable

Nessus

VMware vCenter

vSphere

ESXi

VDI

OpenShift / Kubernetes / Docker

Tanzu / Rancher

Job description

Date Posted: 2026-11-02 Country: United States of America Location: US-TX-PLANO-465 ~ 465 Independence Pkwy ~ INDEPENDENCE 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: Top 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. At Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring 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. Our team solves tough, meaningful problems that create a safer, more secure world.

What You Will Do:

• Provide IT systems administration in a heterogeneous Microsoft Windows and Redhat Enterprise Linux environment.
• 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).
• Manage Windows Enterprise environments including system management, performance monitoring, process automation, security hardening, and technical troubleshooting.
• Maintain compliance standards, monitor security systems, and proactively respond to threats using enterprise security tools such as Ivanti, Splunk, Tenable, and SEP.
• Windows Server fundamentals to include DNS, DHCP, AD, and server replication methods
• Utilize your experience with hardware RAID, hardware and software encryption and server management tools.
• Install and configure software applications requested by end users.
• Work with Cybersecurity professionals to maintain security requirements.
• Create, update, and maintain IT documents and technical artifacts.
• Systems are operational 24x7 and occasionally require work effort beyond standard work hours.
• Travel required to other US Domestic locations as business needs dictate up to 10% travel.
• Full time 100% Onsite position

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 Top 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 operating systems and Windows Server administration.
• Experience administering one or more of the following: Active Directory, Exchange, WSUS, Server Virtualization (Hyper-V, VMware), Group Policy, or backup and Recovery.
• Must be able to obtain Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification) within 6 months of start date.

Qualifications We Prefer:

• Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification and an Operating System Certification)
• Experience with Ivanti, Symantec, Splunk, Tenable and Nessus products.
• Experience working with NISPOM, DFARS, JSIG, RMF, handling classified information, and working with compliance teams.
• Experience managing core network and infrastructure like domain controllers, global catalogs, DNS, and DHCP.
• Experience with Microsoft WSUS, SMECP, and/or Exchange.
• Experience in patch management, vulnerability remediation, operating system upgrades, computer security, system monitoring and logging.
• Experience using VMWare vCenter, vSphere, ESXi, Virtual Desktop Infrastructure (VDI), and Microsoft Hypervisor.
• Automation and task orchestration through scripting and off-the-shelf tools experience.
• Experience with Containerization Technologies such as OpenShift, Kubernetes, Docker, Tanzu, and Rancher.

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.

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 95,500 USD - 181,700 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.

Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays.

Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.

Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance.

This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.

RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class.

RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.

RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.