Senior IT Administrator

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Department Summary:

The Advanced Capabilities Department (N162) within the Integrated All-Domain Effects Division (N160) in MITRE's Air and Space Forces Center focuses on developing and enabling capabilities to counter peer adversaries and enable the US to project power and operate within highly contested environments. The Advanced Capabilities IT Systems Architects group is seeking a full-time Systems Administrator to support the deployment, operation, and maintenance of IT systems in classified lab environments. 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.

Roles & Responsibilities:

Building and hardening Windows, Linux, Hypervisor systems (VMware). User maintenance activities on both Windows and Linux operating systems Perform general systems administration (patching, updates, user support) of: Windows & Linux clients and servers. Network switches. VMware ESXi and vCenter. Network Storage Systems.

Configure:

DNS, DHCP, Group Policy, Active Directory, Backup Solutions, and least-privilege. Maintenance of other systems/services according to project needs (LogInsight, WSUS, Gitlab, Trellix ePO, Nessus, Teamwork Cloud, docker/podman, miscellaneous web servers, etc.). Configure, maintain, troubleshoot, and secure systems and network devices to comply with DISA Security Technical Implementation Guides (STIGs). Assist IA team with coordination between sponsors, MITRE project leaders, and MITRE's accreditation officials to obtain formal accreditation to operate classified information systems. Contribute to internal procedures and documentation.

Basic Qualifications:

Active Top Secret clearance with the ability to obtain and maintain a TS/SCI clearance. 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. Working knowledge of server and client operating systems (Win10/11, Srv2016+, RHEL 8+). Fundamental understanding of lab IT architecture and supporting air-gapped systems. Fundamental understanding of system administration, network, and operating system hardening techniques. Fundamental understanding of operating system command-line tools and scripting. 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. Per the U.S. Government's eligibility requirements, you must be a U.S Citizen to be considered for a security clearance. In accordance with DoD 8570.01M, the selected individual must meet the requirements of an IAT Level II as a condition of employment (e.g. Security+).

Preferred Qualifications:

Active

TOP SECRET/SCI

clearance Red Hat Certified System Administrator (RHCSA) or higher. Experience with one or more programming/scripting languages (Chef, Ansible, PowerShell, Bash, Python, etc.) Experience with

RMF, CNSSI 1253, NIST SP

800-53, and NISPOM. Experience with Security Technical Implementation Guides (STIGs) and Security Content Automation Protocol (SCAP) Compliance Checker (SCC). Knowledge of Information Assurance Vulnerability Alerts (IAVAs). This requisition requires the candidate to have a minimum of the following clearance(s): Top Secret This requisition requires the hired candidate to have or obtain, within one year from the date of hire, the following clearance(s): Top Secret/SCI Salary compensation range and midpoint: $122,400 - $153,000 - $183,600

Annual Work Location Type:

Onsite It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability. Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local or international law. MITRE intends to maintain a website that is fully accessible to all individuals. If you are unable to search or apply for jobs and would like to request a reasonable accommodation for any part of MITRE's employment process, please email recruitinghelp@mitre.org for general support and collegerecruiting@mitre.org for intern positions. This service is for individuals requiring reasonable accommodation requests. Please note that vendor solicitations will not receive a reply. Benefits information may be found here . Copyright © 1997-2026, The MITRE Corporation. All rights reserved. MITRE is a registered trademark of The MITRE Corporation. Material on this site may be copied and distributed with permission only.