Principal System Administrator, LADS, Tewksbury, MA Onsite

Location: US-MA-TEWKSBURY-TB1; 50 Apple Hill Dr; ASSABET BLDG Position Role Type: Onsite Security Clearance: Active U.S. government issued Secret clearance required prior to start and on day 1. U.S. citizenship required. What You Will Do Serve as a Principal Systems Administrator supporting Windows and Linux enterprise environments, responsible for 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. Execute 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. 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 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 clearance prior to start. U.S. citizenship required. Experience administering and securing Windows and RHEL servers. Experience with VMware virtualization. Experience with securing system configurations and 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. Prior experience supporting DoD, defense, or highly regulated environments. What We Offer Values: Safety, Trust, Respect, Accountability, Collaboration, Innovation. Relocation Eligibility – Yes if criteria met. Salary range: $86,800 – $165,200 USD. Benefits include medical, dental, vision, life insurance, short‑term disability, long‑term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, parental leave, paid time off, and holidays. Potential incentive compensation programs (short‑term and long‑term) may be available depending on position level. Equal Opportunity Employer 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, veteran status, or any other applicable protected class. RTX provides affirmative action for qualified Individuals with a Disability and Protected Veterans in compliance with applicable laws. #J-18808-Ljbffr Raytheon