System Administrator

STR is hiring a Systems Administrator with an Active Secret or Top Secret clearance. Help power the infrastructure behind cutting‑edge defense research. At STR, our Information Technology team plays a critical role in enabling the research and development that supports our national security mission. The team brings together experts across Enterprise IT, Classified IT, and Cybersecurity to build and maintain the secure, reliable infrastructure that powers our organization. The Role: We are seeking a Systems Administrator with an active Secret or Top Secret clearance to support our senior administrators in implementing, deploying, and maintaining Linux (Red Hat, Ubuntu) and Windows operating systems in traditional and virtualized environments across a variety of hardware solutions. If you enjoy solving complex infrastructure challenges, improving system reliability, and working in a mission‑driven environment, we’d love to hear from you. Please note: this position is based in Woburn, Massachusetts only (no other sites, no remote). What you will do: Professionally support senior administrators, Information System Security Officers (ISSO), management, researchers and others supporting the customers Configure and maintain NAS Storage, Networking, Firewall, and Directory Services such as MS Active Directory management and Group Policy administration Perform performance monitoring, results analysis and enhancement, as well as process automation using PowerShell scripting and other available technologies Provide daily support, systems maintenance, problem resolution, tracing and project support Create and maintain installation and configuration Standard Operating Procedures (SOPs) Maintain current knowledge of DoD security and technical guidelines and the organization’s policies Provide support for production and development environments After‑hours support is required for maintenance and patching when needed Who you are: This position requires an active Secret or Top Secret security clearance, for which U.S. citizenship is needed by U.S. Government Linux Administration (Red Hat, Ubuntu) Windows OS Administration Nice to Haves: Enterprise Virtualization Tools Multi‑Factor Authentication Public Key Infrastructure Web Server Active Directory including Group Policy, LDAP backend, and Replication Effective utilization of Security Technical Implementation Guidelines (STIGS) and Security Content Automation Protocol (SCAP) Content and Tools Host Based Security System (HBSS) implementation and maintenance Assured Compliance Assessment Solution (ACAS) support Current knowledge of DoD Ports, Protocols, and Services (PPS) Education: Bachelor’s degree + 5 years of experience or Master’s degree + 3 years of experience or PhD or equivalent experience. Pay Information Full‑Time Salary Range: $105,000 to $125,000 STR is an equal opportunity employer. We are fully dedicated to hiring the most qualified candidate regardless of race, color, religion, sex (including gender identity, sexual orientation and pregnancy), marital status, national origin, age, veteran status, disability, genetic information or any other characteristic protected by federal, state or local laws. If you need a reasonable accommodation for any portion of the employment process, email us at View email address on click.appcast.io and provide your contact info. Pursuant to applicable federal law and regulations, positions at STR require employees to obtain national security clearances and satisfy the requirements for compliance with export control and other applicable laws. #J-18808-Ljbffr