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System Administrator, Sr​/TS​/SCI​/Onsite

Job in Littleton, Arapahoe County, Colorado, 80161, USA
Listing for: Lockheed Martin
Full Time position
Listed on 2026-07-06
Job specializations:
  • IT/Tech
    Systems Administrator
Salary/Wage Range or Industry Benchmark: 85500 - 150765 USD Yearly USD 85500.00 150765.00 YEAR
Job Description & How to Apply Below
Position: System Administrator, Sr / TS/SCI / Onsite: CO

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 partners around the world to bring the latest technology to 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.

The 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).

Responsibilities
  • Workstation administration on heterogeneous networks including Windows Server based domains, and Linux distributions
  • Manage operating system cyber compliance, upgrades, and patching (Windows/Linux)
  • Perform guidance and management for hardware, including diagnostics, troubleshooting, and maintenance on multiple architectures
  • Ensure the integrity and availability of applications as well as coordinate new application installations, upgrades, and customer support in classified areas
  • Responsible for implementing effective backup/recovery, resource accounting, and auditing procedures
  • Perform troubleshooting and maintenance on varied IT hardware (PCs, printers, laptops, etc.)
  • Implement security designs in hardware, software, data, and procedures

Full‑time onsite role, working most of the day in closed areas. This role is scoped on a 9X80 Schedule, with every other Friday off.

Basic Qualifications
  • Active TS/SCI clearance with ability to obtain CI Poly
  • U.S. Citizenship required for access to the work facility
  • Must possess Security+ certification or better
  • 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 (Installation/Upgrades, System Imaging, Account Management, Print Services, integration with Domain Services, Hardware Modernization, Performance Monitoring, etc.)
  • Experience determining root causes of network issues and recommending strategies to prevent recurrences
  • 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
  • Experience with vulnerability remediation and security management (system hardening, log management, configuration management (Nessus, Trellix EPO, WSUS, Splunk, ACAS, SCAP, HBSS, etc.))
  • Familiarity with automation tools (Ansible, Power Shell)
  • Experience administering Net App storage devices
  • Advanced IT certification such as RHCSA, MSCE, or CISSP

Clearance Level: TS/SCI w/Poly

Schedule and Compensation

Schedule:

9x80, every other Friday off.

Pay Range: $85,500 - $150,765, depending on location.

Benefits offered:

  • Medical, Dental, Vision
  • Life Insurance
  • Short-Term Disability
  • Long-Term Disability
  • 401(k) match
  • Flexible Spending Accounts
  • EAP
  • Education Assistance
  • Parental Leave
  • Paid Time Off (PTO) and Holidays

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

Experience Level: Experienced Professional

Business Unit: ENTERPRISE BUSINESS SERVICES

Relocation Available:
No

Career Area:
Information Technology

Type:
Full-Time

Shift: First

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