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System Administrator

Remote / Online - Candidates ideally in
Littleton, Arapahoe County, Colorado, 80161, USA
Listing for: Lockheed Martin
Remote/Work from Home position
Listed on 2025-12-20
Job specializations:
  • IT/Tech
    Cybersecurity, IT Support, Systems Administrator, Network Security
Job Description & How to Apply Below

System Administrator – Trusted Security Solutions  (TSS)

Description: What We Do:
The Trusted Security Solutions  (TSS) program is the beating heart of Rotary Mission Systems , where cutting edge technology meets uncompromising safety to protect the world’s most critical missions. Built on Lockheed Martin’s heritage of aerospace excellence and maritime mastery, TSS delivers an integrated suite of cyber‑resilient hardware root of trust and encrypted communication solutions that keep sensors, weapons, and command and control networks invulnerable to ever‑evolving threats.

Key Responsibilities
  • Day‑to‑day Operations – Monitor, maintain, and support Windows/Linux servers, virtualization platforms, and storage systems supporting TSS.
  • Incident Management – Respond to tickets, diagnose issues, and provide timely resolutions while escalating complex problems to senior staff.
  • User Support – Serve as the primary point of contact for TSS end users, delivering exceptional service for access, connectivity, and application support.
  • Patch & Update Management – Apply OS patches, firmware upgrades, and security updates in accordance with corporate policies.
  • Backup & Recovery – Execute scheduled backups, verify data integrity, and perform restores as needed.
  • Documentation – Maintain accurate run books, SOPs, and knowledge base articles to streamline onboarding and knowledge sharing.
  • Security Compliance – Enforce baseline security controls, conduct vulnerability scans, and assist with audits (e.g., NIST, DISA STIG).
  • Continuous Improvement – Identify automation opportunities (Power Shell, Python, Ansible) to reduce manual effort and improve system reliability.
Why Work For Us
  • Flexible schedules and a balance of in‑office and at‑home work.
  • Competitive pay and comprehensive benefits, including generous 401(k) match and health insurance.
  • Opportunities for professional growth and development, including training and education programs.
  • A dynamic and supportive team environment focused on collaboration and innovation.
  • The opportunity to work at our absolutely beautiful Deer Creek Facility in Littleton, CO.
Basic Qualifications
  • Education:

    Associate’s degree in Computer Science, Information Technology, or related field; or equivalent military/industry experience.
  • Experience:

    0–2 years of hands‑on system administration or technical support in a Windows/Linux environment.
  • Technical

    Skills:

    Windows Server, Linux, Hypervisors (VMware/Hyper V/etc.), authentication mechanisms, basic networking (TCP/IP, DNS, DHCP), and scripting.
  • Security Clearance:
    Must have the ability to obtain TS/SCI Clearance to be considered for this position.
Desired Skills
  • Windows and Linux OS patching/security hardening in a classified environment.
  • Experience with offline RHEL patch management.
  • Experience with virtualization environments (e.g., VMWare) and storage array networks (e.g., Net App, JBOD appliances).
  • Scripting experience – Python, Bash, Power Shell.
  • Boot image creation.
  • Cisco switch configuration.
  • Effective oral and written communication skills.
  • Ability to work effectively in a rapid‑paced, team environment.
  • CompTIA Linux+ or Red Hat Certified Systems Administrator Certification.
  • Ability to provide in‑depth monitoring, able to identify and fix issues utilizing various troubleshooting techniques and procedures.
  • Certifications:

    CompTIA Security+ (current – will be required within 6 months of start).
  • Soft Skills:

    Strong analytical and problem‑solving abilities, effective communication, teamwork orientation, and a proactive “can‑do” attitude.
Security Clearance Statement

This position requires a government security clearance, you must be a US Citizen for consideration.
Clearance Level: Top Secret

Equal Opportunity Employer

Lockheed Martin is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.

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