×
Register Here to Apply for Jobs or Post Jobs. X

Sr. Principal System Administrator

Job in Plano, Collin County, Texas, 75086, USA
Listing for: Prattwhitney
Full Time position
Listed on 2026-09-12
Job specializations:
  • IT/Tech
    Systems Administrator, Cybersecurity
Salary/Wage Range or Industry Benchmark: 110000 - 205000 USD Yearly USD 110000.00 205000.00 YEAR
Job Description & How to Apply Below

Date Posted:  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.

Sr. Principal Linux Systems Administrator, in Infrastructure Workplace Services, will lead and collaborate with a diverse team to support fast‑paced, critical programs with classified information system capabilities. Success in this role means you can develop, implement and maintain secure, cost‑efficient environments across various classified programs. Program teams rely on your collaboration and guidance to define computing requirements and create end‑to‑end solutions to solve complex IT infrastructure problems.

What You Will Do:
  • Manage and optimize Red Hat Enterprise Linux infrastructure, ensuring reliable and secure IT operations.
  • Act as a senior technical resource for the team to maintain confidentiality, integrity, and availability of assigned IT systems and applications.
  • Partner with Cybersecurity teams to maintain compliance with security requirements and provide documentation, training, and guidance on advanced IT processes and procedures.
  • Mentor and guide junior administrators across a broad range of responsibilities, including corrective and preventive maintenance, routine operational tasks, account management, and system performance tuning.
  • Lead and contribute to technical meetings with internal teams and program stakeholders, providing technical guidance and best practice to ensure successful outcomes.
  • Develop, document, and enforce system administration processes, standards, and best practices.
  • Participate in Change Request reviews and serve on Change Management Boards at various program levels.
  • Must be able to obtain Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification).
  • Systems are operational 24x7 and occasionally require work effort beyond standard work hours.

Travel required up to 5% Full time 100% Onsite position

Qualifications You Must Have:

Typically requires a University degree or equivalent experience and a minimum of 2 years of prior relevant experience, or an Advanced Degree in a related field. Active and transferrable final U.S. government issued Top Secret security clearance is required prior to start date with the ability to obtain program access after start. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Qualifications

We Prefer:
  • An active DoD TS Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE…
To View & Apply for jobs on this site that accept applications from your location or country, tap the button below to make a Search.
(If this job is in fact in your jurisdiction, then you may be using a Proxy or VPN to access this site, and to progress further, you should change your connectivity to another mobile device or PC).
 
 
 
Search for further Jobs Here:
(Try combinations for better Results! Or enter less keywords for broader Results)
Location
Increase/decrease your Search Radius (miles)
0
200
Filters
Education Level
Experience Level (years)
Posted in last:
Salary