Sr. Principal Linux Systems Administrator

Raytheon; Andover (MA); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

Relocation assistance

Job summary

Raytheon is seeking a Sr. Principal Linux Systems Administrator to lead a team in supporting classified programs at our Andover, MA site. You will manage Red Hat Enterprise Linux infrastructures and work with Cybersecurity to ensure compliance, while mentoring junior staff.

The role requires a DoD security clearance, US citizenship, and the ability to travel up to 10%. Onsite work is required, with potential relocation assistance for eligible candidates.

Qualifications

• Bachelor’s degree or advanced degree in a related field with 5+ years (or 8+ years with a bachelor’s) of relevant experience.
• Advanced experience administering Red Hat Enterprise Linux environments.
• Experience mentoring both individuals and teams.
• Must be able to obtain DoD Directive 8140/8570 certification (CompTIA Security+ CE or equivalent).
• Ability to obtain interim U.S. government security clearance; U.S. citizenship required.

Responsibilities

• Manage and optimize Red Hat Enterprise Linux infrastructure, ensuring reliable IT operations.
• Act as a senior technical resource to maintain confidentiality, integrity, and availability of assigned IT systems and applications.
• Collaborate with Cybersecurity teams to maintain compliance and provide documentation, training, and guidance on advanced IT processes.
• Mentor and guide junior administrators across a broad range of responsibilities.
• Lead technical meetings with internal teams and program stakeholders, providing guidance and best practices.

Skills

Red Hat Linux

Mentoring

Security clearance

DoDD 8140 / 8570

Scripting (Python/Go/PowerShell/Bash)

VMware

Kubernetes

OpenShift

Podman

Terraform/Ansible

Windows administration

Education

Bachelor’s degree or Advanced degree

Tools

VMware

Kubernetes

OpenShift

Podman

Terraform

Ansible

Windows administration

Job description

Location:

US-MA-ANDOVER-AN1 ~ 350 Lowell St ~ AN1 ESSEX BLDG

Date Posted:

2026-07-16

Country:

United States of America

Location:

US-MA-ANDOVER-AN1 ~ 350 Lowell St ~ AN1 ESSEX 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:

Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date

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.

This role requires on-site presence in Andover, MA. Relocation may be available if the selected applicant meets company policy criteria.

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.
• Systems are operational 24x7 and occasionally require work effort beyond standard work hours.
• Travel to other US Domestic locations may be required as business needs dictate. Up to 10% per year.
  
  

Qualifications You Must Have

• Typically requires a bachelor’s degree or equivalent experience and minimum 8 years prior relevant experience, or an Advanced Degree in a related field and minimum 5 years’ experience.
• Advanced experience administering Red Hat Enterprise Linux environments
• Experience mentoring both individuals and teams.
• Must be able to obtain Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent) within a reasonable amount of time.
• Ability to obtain INTERIM 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.
  
  

Qualifications We Prefer

• Experience with any of the following technologies: VMware, Kubernetes, OpenShift, Podman, Infrastructure as Code (Terraform and/or Ansible), Windows administration.
• Scripting/coding proficiency (Python/Go/PowerShell/Bash)
• Experience supporting engineers in software, simulations, and hardware development.
• Experience working with NISPOM, JAFAN, JSIG, and/or DoD/RMF guidelines.
• Strong communication skills, with ability to influence and drive change with peers and leaders across the organization.
  
  

What We Offer

• Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.
• Relocation assistance available, provided final candidate meets eligibility requirements
  
  

Learn More & Apply Now

• Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as: Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.
• This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm
  
  

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.

Privacy Policy and Terms:

Click on this link to read the Policy and Terms