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Sr. Windows System Admin​/Helpdesk- TS​/SCI W​/Poly - Littleton, CO Security Clearance

Job in Littleton, Arapahoe County, Colorado, 80120, USA
Listing for: Lockheed Martin
Full Time position
Listed on 2026-07-06
Job specializations:
  • IT/Tech
    Systems Administrator
Job Description & How to Apply Below
Position: Sr. Windows System Admin/Helpdesk- TS/SCI W/Poly - Littleton, CO with Security Clearance
Job Number 733901

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 that the Special Programs Division are responsible for. 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, domain accounts, password issues and service requests (Servers, Workstations, and Storage).

This position provides Windows System Administration services including installation, integration and configuration of Windows, VMWare, and Hyper-V servers, as well Helpdesk services in support of the Stingernet Portfolio. This includes upgrades, operations and maintenance, hardware and software installations, backups, inventory, and service requests in the support of program area IT environments at the Waterton, CO campus.

Basic Qualifications:

• Must have an active TS/SCI clearance with a CI Poly
• U.S. Citizenship required for access to the work facility
• IAT II certification (Security+, etc.)
• Excellent communication skills
• Experience with Active Directory, roaming profiles, and user creation
• Experience with desktop operating system, updates, and patching troubleshooting
• Experience with hardware movement, installation, and accountability
• Experience performing Commercial Off the Shelf (COTS) software installations and support
• Experience working in a teaming/collaborative environment
• Knowledge of network support in a classified environment (encryption, etc.)
• Experience using Microsoft Endpoint Configuration Manager (MECM/SCCM)
• Microsoft Service Manager experience / Service Now
• Experience maintaining asset records for desktop hardware
• Ability to lift 50 pounds Desired

Skills:

• Knowledge of National Industrial Security Program Operating Manual (NISPOM), Risk Management Framework (RMF) and Security Technical Implementation Guide (STIG) Requirements
• Experience with storage technologies (i.e., Net App, Nimble, Racktop)
• Knowledge of Scripting and Automation (i.e., Ansible, Power Shell, Scorch/Runbooks, Terraform, Chef, Puppet)
• Experience working in heavy virtualized environments/private clouds (HyperV, VMware, Azure local, KVM, Nutanix)
• Knowledge/understanding of Domain Name Services (DNS)
• Managing advanced clusters and virtual desktop environments (RDS, Horizon View, Xen desktop)
• Capable of supporting multiple tasks and customers with competing deadlines concurrently
• Ability to create documentation, processes, and procedures to ensure risk reduction
• Self-motivated, customer focused, and proactive Security Clearance Statement:
This position requires a government security clearance, you must be a US Citizen for consideration. Clearance Level: TS/SCI w/Poly Other Important Information You Should Know Expression of Interest:
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. Work Schedules:
Lockheed Martin supports a variety of alternate work schedules that provide additional flexibility to our employees. Schedules range from standard 40 hours over a five day work week while others may be condensed. These condensed schedules provide employees with additional time…
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