System Administrator

Job ID: 2617568
Location: Arlington, VA, US
Date Posted: 2026-10-02
Category: Information Technology
Subcategory: IT Sys Integration
Schedule: Full-Time
Shift: Day Job
Travel: Yes - 10% of the time
Minimum Clearance Required: TS.SCI
Clearance Level Must Be Able to Obtain: None
Potential for Remote Work: ORA_ON_SITE
Description
SAIC is currently seeking a motivated and experienced System Administrator to join our team at the Pentagon in Arlington, VA.
Shift Schedule: Monday-Friday, 6:00 AM to 6:00 PM core hours with occasional after - hours onsite work to support a NIPR and SIPR environment.
Responsibilities:

• Manage currently supported and subsequent Windows Server Operating Systems on virtual operating environments, providing technical oversight and consultation services.
• Perform complex system administration and security engineering efforts, STIG remediation, advanced GPO implementation and system upgrades.
• Research and resolve performance, capacity, and other server - related issues.
• Provide mentorship and guidance to junior systems administrators and other IT staff.
• Improve efficiencies by documenting and standardizing support processes while capturing and developing best practices.
• Provide support for the escalation and communication of statuses to leadership to include the government customer.
• Maintain and update Server STIG (Security Technical Implementation Guide) requirements to comply with DISA standards.
• Ability to remain flexible and adapt to changing priorities with efficiency.
• Adhere to change management guidelines by writing Change Requests and seeking the necessary approvals.
• Support operational transition of enterprise solutions into production.

Qualifications
Required Qualifications:

• Bachelors and two (2) years or more experience or Masters and 0 years related experience.
• Active DoD Top Secret clearance.
• Active DoD 8570.01 - M/8140 IAT Level II certification (e.g., Security+ CE, CySA+, etc.) is required prior to start
• Expert-level knowledge of Microsoft Windows Server, Active Directory Domain Services (AD DS), Domain Name System (DNS), and Group Policy (GP) management.
• Experience implementing and managing Active Directory Certificate Services (AD CS) to support a large-scale Public Key Infrastructure (PKI).
• Strong understanding of authentication mechanisms (Kerberos, LDAP, NTLM) and experience with advanced troubleshooting.
• Experience implementing Public Key Infrastructure (PKI) with Active Directory.
• Knowledge of Security Assertion Markup Language (SAML).
• Excellent analytical skills and a proven track record in developing and implementing innovative solutions to complex problems.
• Experience working in a multi-tenant or large enterprise server environment.
• Skilled in scripting and automation using PowerShell to improve and standardize system management.

Target salary range: $120,001 - $160,000. The estimate displayed represents the typical salary range for this position based on experience and other factors.
SAIC is a premier technology integrator providing full life cycle services and solutions in the technical, engineering, intelligence, and enterprise information technology markets. SAIC is Redefining Ingenuity through its deep customer and domain knowledge to enable the delivery of systems engineering and integration offerings for large, complex projects. SAIC's approximately 15,000 employees are driven by integrity and mission focus to serve customers in the U.S. federal government. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $4.5 billion. For more information, visit saic.com. For information on the benefits SAIC offers, see .