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Sr. System Administrator​/TS​/SCI​/Onsite: CO Security Clearance

Job in Littleton, Arapahoe County, Colorado, 80120, USA
Listing for: Lockheed Martin
Full Time position
Listed on 2026-09-02
Job specializations:
  • IT/Tech
    Systems Engineer, Systems Administrator, Cybersecurity
Salary/Wage Range or Industry Benchmark: 95900 - 178100 USD Yearly USD 95900.00 178100.00 YEAR
Job Description & How to Apply Below
Position: Sr. System Administrator / TS/SCI / Onsite: CO with Security Clearance
Job Number 3932 Standard

Job Description Our employees are the core of everything we do, and they are helping the future arrive. As a leading technology innovation company, our team of over 100,000 employees work with our partners around the world to bring the latest technology to our customers' toughest challenges. Headquartered in Bethesda, MD, Lockheed Martin has employees based in all 50 states and more than 570 facilities that span 70 countries.

This Enterprise Operations (EO) position supports the Lockheed Martin Space division located in Denver, CO. The selected candidate will be responsible for providing support to the critical programs under the responsibility of the Space Division. This IT professional will ensure that the Lockheed Martin IT systems are managed, controlled, and compliant with the Corporate Information Protection Manuals (CIPM). This includes upgrades, operations and maintenance, hardware and software installations, and service requests (servers, workstations, containers, networking, and storage), continuity of operations (backups and verified restore capabilities).

In this position, the chosen candidate will utilize their system administration and architecture skills as primary IT support for several classified environments. 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. Basic Qualifications
• Active TS/SCI clearance with ability to obtain CI Poly
• U.S. Citizenship required for access to the work facility
• Must have a DoD 8572 qualified certification such as CompTIA Security+
• 3+ years of experience administering Linux and Windows server environments
• Demonstrated experience effectively performing in a fast paced, dynamic environment
• Experience with DISA STIGs and Security Hardening of OS and applications
• Experience performing diagnostics and troubleshooting network issues
• Experience with Operating Systems life cycle management and configuration management (i.e., Installation/Upgrades, System Imaging, Account Management, Print Services, integration with Domain Services, Hardware Modernization, Performance Monitoring, etc.)
• Experience with vulnerability remediation and security management (i.e., system hardening, log management, configuration management (i.e., Nessus, Trellix, Splunk, ACAS, SCAP, etc.))
Strong communication skills and ability to work effectively in a team environment
• Ability and willingness to accommodate occasional off-shift hours Desired Skills
• Active TS/SCI clearance with a CI Poly
• 5+ years of experience administering Linux and Windows server environments
• Familiarity with automation tools (e.g., Ansible, Power Shell)
• Experience administering Net App storage devices
• Advanced IT certification such as RHCSA, MSCE, or CISSP Pay Information Full-Time Salary Range: $95900.00 - $178100.00 At Lockheed Martin, we know mission success starts with taking care of our people. Our Total Rewards program is designed to attract top talent, support your well-being, and help you grow-both professionally and personally. The salary range for this position is as listed on the…
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