Principal Linux System Administrator (Will Sponsor Clearance)

Prattwhitney; Sudbury (MA); On-site; USD 87,000 - 165,000; Full time

Benefits offered by this job

Relocation assistance available

Job summary

RTX is seeking a Principal Linux System Administrator in Marlborough, MA to support Windows and Linux enterprise environments, managing patching, compliance, and secure configurations in a 24x7 mission-critical setting.

You will deploy and maintain VMware ESXi/vCenter, imaging pipelines (MECM/SCCM, PXE, Windows imaging), and scripting with PowerShell, collaborating with Cyber Security, DevSecOps, Networking, and Storage in an onsite DoD environment with occasional travel.

Qualifications

• University degree or equivalent experience.
• Ability to obtain Interim DoD Secret clearance.
• U.S. citizenship and eligibility for clearance.
• Experience with administering and securing Linux servers.
• Experience with VMware virtualization.
• Experience with securing system configurations and hardening.
• PowerShell scripting experience.

Responsibilities

• Support Windows and Linux enterprise environments, patching and maintenance.
• Design, deploy, and maintain virtual infrastructure using VMware ESXi and vCenter.
• Engineer imaging, deployment, and automation solutions (MECM/SCCM, PXE, Windows imaging).
• Administer Active Directory, Group Policy, and certificate-based authentication.
• Collaborate with Cyber Security, DevSecOps, Networking, and Storage teams to resolve issues.
• Provide on-site support in a DoD closed-area environment with occasional travel.
• Work independently with minimal direction in a fast-paced environment.
• Obtain DoD baseline certification (DoDD 8140/8570) within a reasonable time.

Skills

Linux admin

VMware virtualization

PowerShell scripting

Security compliance

DoD/STIG knowledge

Education

University degree or equivalent

Tools

MECM/SCCM

PXE boot

Windows imaging

VMware vCenter

Job description

Date Posted: 2026-09-17 Country: United States of America Location: US-MA-MARLBOROUGH-MA3 ~ 1001 Boston Post Rd ~ BLDG 3 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. Our Digital Technology (DT) organization ensures that Raytheon teammates across the globe are able to communicate, collaborate and innovate for customer success. We create leading-edge technology solutions to prevent security threats, secure the integrity of our systems and support IT infrastructures around the world. Principal Linux System Administrator based in Marlborough, MA, internally known as Principal Specialist, Information Workplace Services collaborate and support exciting, critical programs with classified information system capabilities.

What You Will Do:

Serve as a Principal Systems Administrator supporting Windows and Linux enterprise environments, responsible for the design, implementation, maintenance, patching, and troubleshooting of Windows Server, Windows 11, RHEL 7/8/9, and virtualized infrastructure within a large-scale, mission-critical environment operating 24x7x365. Experience with Windows and Linux patching, vulnerability remediation, and compliance activities, including STIG/EVAL STIG implementation, SCAP/ACAS support, log collection, and close coordination with Cyber Security teams to maintain continuous compliance with DoD and regulatory requirements. Design, deploy, and maintain virtual infrastructure using VMware ESXi and vCenter, including VM lifecycle management, host upgrades, performance tuning, and support of critical production workloads. Engineer and sustain enterprise imaging, deployment, and automation solutions, including MECM/SCCM, PXE, Windows imaging, in-place OS upgrades, and scripted software deployment using PowerShell and automation frameworks. Administer and support core Windows services and integrations, including Active Directory, Group Policy, secure system configurations, certificate-based authentication, and customized user environments. Collaborate across Digital Technology, Engineering, Cyber Security, DevSecOps, Networking, Storage, and Tools teams to resolve complex infrastructure, integration, and compliance challenges, while operating independently with minimal oversight. Support both planned and emergent operational needs in a fully on-site DoD closed-area environment, including occasional after-hours support and up to 10% travel as required to meet program objectives. Work independently, prioritize competing demands, and execute with minimal direction in a fast-paced operational environment. Must obtain DoDD 8140/8570 baseline certification (CompTIA Security+ or equivalent) within a reasonable amount of time. Position requires 100% onsite work in a closed area, with up to 15% travel to supported RTX locations in MA, RI, and NH (typically within 45–90 minutes). Full-time 100% onsite position.

Qualifications You Must Have:

• Typically requires a University Degree or equivalent experience and minimum of 5 years prior relevant experience, or an Advanced Degree in a related field and minimum of 3 years experience.
• Ability to obtain an Interim U.S. government issued Secret security clearance is required prior to start.
• U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
• Experience with administering and securing Linux servers.
• Experience with VMware virtualization.
• Experience with securing system configurations, system hardening.
• Experience with PowerShell scripting.

Qualifications We Prefer:

• Experience serving as a technical SME or primary point of contact for patching, vulnerability remediation, or compliance initiatives.
• Hands-on experience with MECM/SCCM, PXE boot services, OS imaging, and automated software deployment frameworks.
• Familiarity with NetApp storage and/or HPC environments.
• Experience with enterprise Windows services, including Active Directory, Group Policy, and identity integration.
• Familiarity with cybersecurity and compliance tooling, such as ACAS, SCAP, Splunk, STIG Viewer, and audit support processes.
• Experience supporting or integrating with DevSecOps environments, including Kubernetes, Rancher, and artifact repositories.
• Experience with SQL Server, including clustered configurations.

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. Relocationassistanceis available. Relocation assistance available, provided final candidate meets eligibility requirements (this verbiage will say the opposite if not approved)

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 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 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:

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.