Principal System Administrator, LADS, Tewksbury, MA Onsite

Principal System Administrator LADS (Land & Air Defense Programs)

Raytheon Digital Technology – LADS Program & Infrastructure

Tewksbury, MA – Onsite role (100%)

US Secret Clearance required – Active & Current

At RTX, the world 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.

Principal System Administrator based in Tewksbury, MA, internally known as Principal Specialist, Information Workplace Services (P3), are IT/DT professionals who will collaborate and support exciting, 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:

• 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 Power Shell 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, Dev Sec Ops , 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.

Qualifications You Must Have:

• Typically, requires a University degree or equivalent experience, plus a minimum of 5 years of relevant experience, or an advanced degree with a minimum of 3 years of relevant experience.
• Active and transferable U.S. government issued 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 administering and securing Windows and RHEL servers
• Experience with VMware virtualization
• Experience with securing system configurations, system hardening
• Experience with Power Shell scripting

Qualifications We Prefer:

• Experience serving as a technical SME or primary point of contact for patching,…