Classified IT System Administrator / Onsite: PA, AL, CA, FL or CO

Lockheed Martin Corp.; California; On-site; USD 70,000 - 90,000; Full time

Job summary

A major aerospace and defense company is seeking a Systems Administrator to support mission-critical IT capabilities for national security. This role involves ensuring the reliability, performance, and security of classified infrastructure. Ideal candidates should have experience with Linux and/or Windows systems, strong troubleshooting skills, and a desire to work within a team environment. This hands-on position requires US Citizenship and the ability to obtain Top Secret Clearance. The role will be onsite in various locations across the U.S.

Qualifications

• US Citizenship with ability to obtain Top Secret Clearance.
• Experience with Linux and/or Windows system administration.
• Familiarity with system maintenance activities.

Responsibilities

• Support DarkStar Enterprise network operations.
• Ensure reliability and security of classified infrastructure.
• Contribute to Information Assurance efforts and vulnerability scans.

Skills

System administration

Troubleshooting technical issues

Communication skills

Ability to work in a team

Tools

Linux

Windows

VMware

Ansible

Python

Job description

Basic Qualifications

• US Citizenship (no dual citizenship), with Ability and willingness to obtain Top Secret Clearance
• Demonstrated work experience with system administration in one or more areas: Linux, Windows, networking, or storage
• Experience troubleshooting and resolving technical issues in an IT environment
• Familiarity with system maintenance activities such as patching, updates, and configuration management
• Understanding of basic networking concepts (IP, DNS, routing, etc.)
• Experience supporting users and resolving hardware/software issues
• Ability to follow established processes for incident, change, and problem management
• Strong communication skills and ability to work effectively in a team environment

Job Description

This Enterprise Operations position supports the DarkStar Enterprise network, delivering secure, mission-critical IT capabilities to collateral Secret programs across the enterprise. As a Systems Administrator, you will play a direct role in enabling national security objectives by ensuring the reliability, performance, and security of classified infrastructure used by critical programs.

This is a hands-on position focused on resolving technical challenges across applications, systems, and network connectivity within a classified environment. You will be part of a high-performing team responsible for maintaining and defending enterprise IT systems that operate in complex, security-constrained environments.

The selected candidate will administer and support Linux and/or Windows systems, network components, and storage platforms. Responsibilities include system installation, configuration, maintenance, and troubleshooting to ensure continuous availability of mission systems.

You will actively contribute to Information Assurance efforts by performing vulnerability scans, remediating security findings, applying patches, and implementing system hardening in compliance with stringent security requirements. Additionally, you will ensure all enterprise assets and software are properly tracked, controlled, and audit-ready.

Working alongside engineers, cybersecurity professionals, and program stakeholders, you will support system integration, upgrades, and sustainment activities across the full system lifecycle. You will help resolve incidents, execute changes, and improve operational processes that directly impact mission success.

This is an Onsite role, and can be located in one of the following locations:

• King of Prussia, PA
• Huntsville, AL
• Littleton, CO
• Sunnyvale, CA
• Titusville, FL

This role operates on a 4x10 schedule and may include off-shift hours, weekends, and occasional travel in support of mission needs.

Desired Skills

• Active Secret or Top Secret clearance
• At least 2 years of experience administering Linux and/or Windows server environments
• Experience with virtualization technologies (VMware, KVM, or similar)
• Experience with storage systems (e.g., NetApp or similar platforms)
• Knowledge of Active Directory, domain services, and Windows/Linux integration
• Experience with system hardening, vulnerability scanning, and remediation practices
• Familiarity with automation tools (e.g., Ansible)
• Scripting experience (e.g., Python, Bash, or PowerShell)Experience working in classified or air-gapped environments
• Familiarity with encryption technologies (SSL/TLS) and certificate management

Other Important Information

By applying to this job, you are expressing interest in this position and could be considered for other career opportunities where similar skills and requirements have been identified as a match. Should this match be identified you may be contacted for this and future openings.

Ability to work remotely

Onsite Full-time: The work associated with this position will be performed onsite at a designated Lockheed Martin facility.