Principal Systems Administrator- Will sponsor a clearance!

globalhr; Woburn (MA); On-site; USD 87,000 - 165,000; Full time

Job summary

RTX is seeking a Principal Systems Administrator based in Woburn, MA to support Windows and Linux environments in a large-scale, on-site DoD setting. You will design, implement, and maintain secure IT infrastructure across classified programs, collaborating with cross-functional teams and ensuring compliance with DoD security requirements.

The role requires interim clearance to start, a DoD secret clearance, and up to 10% travel.

Qualifications

• Bachelor’s degree with 5+ years of relevant experience, or an advanced degree with 3+ years of relevant experience.
• Able to obtain a U.S. government issued secret security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Must have an DoD interim clearance to start
• Experience administering and securing Windows and RHEL servers
• Experience with VMware virtualization
• Experience with securing system configurations, system hardening
• Experience with scripting

Responsibilities

• Support Windows and Linux enterprise environments, design, implementation, maintenance, patching, and troubleshooting of Windows Server, Windows 11, RHEL 7/8/9, and virtualized infrastructure.
• Patching, vulnerability remediation, and compliance activities, including STIG/EVAL STIG implementation, SCAP/ACAS support, log collection, and coordination with Cyber Security teams.
• Design, deploy, and maintain virtual infrastructure using VMware ESXi and vCenter, including VM lifecycle management, host upgrades, performance tuning.
• Engineer and sustain imaging, deployment, and automation solutions, including MECM/SCCM, PXE, Windows imaging, in-place OS upgrades, and scripted deployment.
• Administer and support core Windows services and integrations, including Active Directory, Group Policy, and certificate-based authentication.
• Collaborate across Digital Technology, Engineering, Cyber Security, DevSecOps, Networking, Storage, and Tools teams; work independently with minimal oversight.

Skills

Windows Server

RHEL / Linux

VMware virtualization

Scripting (PowerShell)

Security compliance (STIG/ACAS)

Active Directory

Patch management

DoD/regulatory environments

Education

Bachelor’s degree + 5+ years

Advanced degree + 3+ years

Tools

MECM/SCCM

PXE boot services

OS imaging

PowerShell automation

Job description

Date Posted: 2026-09-28

Country: United States of America

Location: US-MA-WOBURN-WB1 ~ 235 Presidential Way ~ SPENCER 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.

Principal System Administrators

based in Woburn, MA, internally known as PrincipalAnalyst InfrastructureWorkplaceServices, collaboratewith manyteams tosupportexciting, critical programs with classified information system capabilities.Successin this role means you candevelop, implement and maintain secure, cost-efficientenvironmentsacross various classified programs. Program teams rely on yourcollaborationand guidance to define computing requirements andcreateend-to-endsolutionstosolvecomplexIT infrastructure problems.

What You Will Do

• Serve as a Principal Systems Administrator will be 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.
• Full time 100% onsite position.
• Must have an interim clearance to start

Qualifications You Must Have

• Typically, bachelor’s degree with 5+ years of relevant experience, or an advanced degree with 3+ years of relevant experience.
• Able to obtain a U.S. government issued secret security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Must have an DoD interim clearance to start
• Experience administering and securing Windows and RHEL servers
• Experience with VMware virtualization
• Experience with securing system configurations, system hardening
• Experience with scripting

Qualifications We Prefer

• Current active a Secret clearance
• 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.
• Prior experience supporting DoD, defense, or highly regulated environments.

Relocation eligible

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.

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attendselect 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 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.

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