Senior Classified Systems Administrator Security Clearance

Position: Senior Classified Systems Administrator with Security Clearance
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Department Summary:

The R111 Classified IT Department delivers secure, mission-critical information technology services for classified research and operations, ensuring highly controlled computing environments remain reliable, compliant, and available. The department designs, operates, and sustains classified infrastructure, including systems, networks, storage, and access controls, while meeting stringent security and regulatory requirements. In parallel, R111 actively reduces risk and technical debt, mitigates compliance drift, and modernizes platforms to support evolving mission needs, enabling classified programs to execute with confidence, resilience, and operational focus.

Roles and Responsibilities:

The team seeks a full-time Systems Administrator to support the deployment, operation, and maintenance of IT systems in Classified lab environment. This is a role best suited for someone who has prior experience working as a classified IT Systems Administrator. This is an on-premises position on our Bedford, MA campus. The successful candidate will have experience in:
* Patching and updating Windows and Linux (RHEL, Ubuntu) server and desktop operating systems

* Perform general systems administration (patching, updates, user support) of:

* Windows & Linux desktops and servers

* Network switches (preferred)

* VMware ESXi, Hyper-V platforms

* Network Storage Systems

* Repository mirrors, such as: VSCode, Docker, Pypi

* Backup and recovery/disaster recovery platforms such as Commvault

* Maintenance of other systems/services according to project needs (SIEMs, Gitlab, Prometheus/Grafana and other monitoring tools, miscellaneous web servers, etc.,)

* Building and hardening Windows, Linux, VMware systems

Basic Qualifications:

* Typically requires a minimum of 5 years of related experience with a Bachelor's degree; or 3 years and a Master's degree; or a PhD with relevant experience who can immediately contribute at this job step; or equivalent combination of related education and work experience.

* Active Top Secret clearance with the ability to obtain a SCI.

* Per the U.S. Government's eligibility requirements, you must be a U.S Citizen to be considered for a security clearance.
* Working knowledge of server and client operating systems. (Win
11, Srv
22/25, RHEL 8+, Ubuntu Linux 22.04+)
* Fundamental understanding of lab IT architecture
* Fundamental understanding of system administration, network, and operating system hardening techniques.
* Fundamental understanding of operating system command-line tools.
* Ability to interface with customers and provide a high level of customer service
* Ability to function effectively in a dynamic, fast-paced environment.
* Ability to collaborate effectively with others

* This position has an on-site requirement of 5 days a week on-site.

Preferred Qualifications:

* Minimum BS in related course of study

* Security+ Certification / 8570 Certification - IAT Level II

* Five years of experience

* Experience with one or more programming/scripting languages (Chef, Ansible, Powershell, Bash, Python, etc.) This requisition requires the candidate…