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

- **Company:** Lockheed Martin
- **Location:** Littleton, CO, United States
- **Experience:** Expert
- **Salary:** $95,900.0 - $178,100.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Systems Engineering, Bash Shell, Configuration Management, Computer Networks, Continuous Availability, Linux, Domain Name System (DNS), Systems Analysis, Python (Programming Language), Kernel-Based Virtual Machine, Windows Servers, NetApp Applications, Network Connections, Windows PowerShell, Ansible, Verification and Validation (Software), Systems Integration, Virtualization Technology, SSL Certificate Management, Scripting, Information Technology, Vulnerability Analysis, Vmware
- **Published:** August 19, 2026
- **Apply:** https://www.careerjet.com/job/us054f8e657ff065790102d642f7c5a86c/eaa

## About the Role

US Citizenship (no dual citizenship), with Ability and willingness to obtain Top Secret Clearance
\- 3+ years of demonstrated work experience with system administration in one or more areas: Linux, Windows, networking, or storage
\- Experience performing technical planning, system integration, or systems analysis in an IT environment
\- Experience troubleshooting and resolving complex technical issues across multiple system domains
\- Knowledge of system maintenance activities such as patching, updates, and configuration management
\- Understanding of networking concepts (IP, DNS, routing, etc.)
\- Experience supporting users and translating customer requirements into technical solutions
\- Ability to follow and improve established processes for incident, change, and problem management
\- Strong communication skills and ability to work effectively in a team environment
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## Desired Skills
\- Active Secret or Top Secret clearance
\- 5+ 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
\- Experience performing cost and risk analysis
\- 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

## 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 Senior Systems Administrator, you will play a direct role in enabling national security objectives by performing technical planning, system integration, and verification and validation of classified infrastructure used by critical programs.
This is a hands-on position focused on resolving complex 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. You will perform functional analysis, trade studies, requirements allocation, and interface definition studies to translate customer and program requirements into hardware and software specifications.
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 ensure the logical and systematic conversion of customer or product requirements into total systems solutions that acknowledge technical, schedule, and cost constraints. Analyses are performed across the full system lifecycle to include: concept, design, fabrication, test, installation, operation, maintenance, and disposal.
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 lead system integration, upgrades, and sustainment activities. You will apply systems analysis techniques and procedures, including consulting with users to determine hardware, software, or system functional specifications. You will support cost and risk, supportability, and effectiveness analyses while helping 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
#EBDT
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Performs technical planning, system integration, verification and validation, cost and risk, and supportability and effectiveness analyses for total systems, and information technology related responsibilities including design, development, and analysis of computer systems or programs based on and related to user or system design specifications; applying systems analysis techniques and procedures, including consulting with users to determine hardware, software, or system functional specifications. Analyses are performed at all levels of total system product to include: concept, design, fabrication, test, installation, operation, maintenance and disposal. Ensures the logical and systematic conversion of customer or product requirements into total systems solutions that acknowledge technical, schedule, and cost constraints. Performs functional analysis, timeline analysis, detail trade studies, requirements allocation and interface definition studies to translate customer
requirements into hardware and software specifications. For positions that do not perform IT responsibilities, use E146, Systems Engineer.


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