The Mitre Corporation

Oct 20, 2026

Senior System Administrator

Mexico

El Segundo Paso, Baja California Sur, Mexico

PythonDocker

About the opportunity

At MITRE, your passion fuels work that impacts our nation and improves lives. This is where your skills strengthen national security, cybersecurity, health, transportation, and citizen services. We’re a nonprofit engineering, applied research, and advanced technology organization working in the public interest. With objectivity and integrity at our core, we lead federally funded research and development centers for U.S. government agencies – collaborating with industry and academia to deliver integrated, high-impact solutions that advance our nation’s health, security, and prosperity. Our people tackle the toughest technical challenges, supported by competitive benefits, meaningful career development, and a culture of innovation, collaboration, and technical excellence. Choose MITRE for a career with purpose — and help shape the future.

The R310 Classified Systems Engineering 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, R310 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 & Responsibilities

The team seeks a full-time Systems Administrator to support the deployment, operation, and maintenance of IT systems in a classified lab environment. This role is best suited for someone who has prior experience working as a classified IT Systems Administrator. This is an on-premises position in our Los Angeles, CA facility. 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, Proxmox (Debian), Microsoft 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, virtualization (VMWare, Proxmox, Hyper-V) systems

Support procurement, management and accountability of Classified IT hardware and property

Design future IT infrastructure upgrades to support changing site needs

Track equipment location, status, and movement into/out of classified spaces; maintain records to support audits and inventories

Maintain a company purchase card; manage classified equipment and subcontract purchases IAW acquisition policies

Coordinate equipment installation, disposition, turn-in, or destruction activities as necessary with other Global Security teams and relevant stakeholders

Plan and execute equipment moves and transfers associated with facility transitions ensuring proper approvals and documentation are maintained

Support Site Operations team in day-to-day security operations.

Assist with escorting cleared and uncleared visitors

Assist in opening and closing the site’s classified spaces

Monitor power and HVAC status impacting classified spaces; coordinate repairs with facilities manager and assistant site lead during outages; notify affected project personnel of outages, impacts, and restoration timelines

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.

Working knowledge of server and client operating systems. (Win11, Srv22/25, RHEL 8+, Ubuntu Linux 22.04+)

Fundamental understanding of lab IT architecture.

Fundamental understanding of VOIP and VTC systems and their troubleshooting.

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 both written and verbal.

Ability to function effectively in a dynamic, fast-paced environment.

Ability to collaborate effectively with others.

Must have an active Top Secret U.S Government issued Security Clearance with the ability to obtain and maintain a Top Secret/SCI U.S. Government issued Security Clearance. Per the U.S. Government’s eligibility requirements, you must be a U.S Citizen to be considered for a security clearance.

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

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

Preferred Qualifications

Active TS/SCI with CI Poly Security Clearance.

Security+ Certification / 8570 Certification – IAT Level II or meets 8140 requirements.

Experience with one or more programming/scripting languages (Chef, Ansible, Powershell, Bash, Python, etc.).

Commitment to Non-Discrimination

Salary compensation range and midpoint: $99,200 - $124,000 - $148,800 Annual

Work Location Type: Onsite

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 [email protected] for general support and [email protected] 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.

Languages

Senior System Administrator

About the opportunity

Roles & Responsibilities

Basic Qualifications

Preferred Qualifications

Commitment to Non-Discrimination

Show your skills.Get discovered.

More opportunities with one profile

Keep exploring

Product Manager – Core Payments | Financial Services

Consultant SAP Payment Central/ Payment Engine

CELLS CONSULTANT