TS/SCI Systems Administrator — Linux & Windows (On-Site MA)

STR; Woburn (MA); On-site; USD 105,000 - 125,000; Full time

Job summary

STR is hiring a Systems Administrator with an active Top Secret/SCI clearance to support senior administrators in deploying and maintaining Linux (Red Hat, Ubuntu) and Windows systems across traditional and virtualized environments. This position is based in Woburn, Massachusetts.

You will work with STR’s Enterprise IT, Classified IT, and Cybersecurity teams to ensure secure, reliable infrastructure that powers defense research, with after-hours maintenance and patching as needed.

Qualifications

• Active TS/SCI clearance required by U.S. Government
• Experience administering Linux (Red Hat, Ubuntu) and Windows
• Bachelor’s degree plus 5 years of experience or Master’s degree plus 3 years (or PhD)

Responsibilities

• Support senior administrators, ISSOs, management and researchers
• Configure and maintain NAS storage, networking, firewalls, and Directory Services (MS Active Directory, Group Policy)
• Perform performance monitoring, analysis, and automation using PowerShell and other tools
• Provide daily support, system maintenance, problem resolution, and project support
• Create and maintain SOPs for installation and configuration
• Stay current with DoD security guidelines and organizational policies
• Provide support for production and development environments
• After-hours maintenance and patching as needed

Skills

Linux administration

Windows administration

Security clearance

PowerShell scripting

Education

Bachelor's degree

Master's degree

PhD

Tools

Active Directory

Group Policy

STIGs/SCAP

HBSS

ACAS

Job description

STR is hiring a Systems Administrator with an active Top Secret/SCI clearance to support senior administrators in deploying and maintaining Linux (Red Hat, Ubuntu) and Windows systems across traditional and virtualized environments. This position is based in Woburn, Massachusetts.

You will work with STR’s Enterprise IT, Classified IT, and Cybersecurity teams to ensure secure, reliable infrastructure that powers defense research, with after-hours maintenance and patching as needed.